![[BACK]](/icons/back.gif){kind=icon}
Up to [cvs.NetBSD.org] / src / crypto / external / bsd / openssh / dist
Request diff between arbitrary revisions
Keyword substitution: kv
Default branch: MAIN
resolve conflicts between 9.7 and 9.8
Import OpenSSH-9.8 (previous was 9.7) Security ======== This release contains fixes for two security problems, one critical and one minor. 1) Race condition in sshd(8) A critical vulnerability in sshd(8) was present in Portable OpenSSH versions between 8.5p1 and 9.7p1 (inclusive) that may allow arbitrary code execution with root privileges. Successful exploitation has been demonstrated on 32-bit Linux/glibc systems with ASLR. Under lab conditions, the attack requires on average 6-8 hours of continuous connections up to the maximum the server will accept. Exploitation on 64-bit systems is believed to be possible but has not been demonstrated at this time. It's likely that these attacks will be improved upon. Exploitation on non-glibc systems is conceivable but has not been examined. Systems that lack ASLR or users of downstream Linux distributions that have modified OpenSSH to disable per-connection ASLR re-randomisation (yes - this is a thing, no - we don't understand why) may potentially have an easier path to exploitation. OpenBSD is not vulnerable. We thank the Qualys Security Advisory Team for discovering, reporting and demonstrating exploitability of this problem, and for providing detailed feedback on additional mitigation measures. 2) Logic error in ssh(1) ObscureKeystrokeTiming In OpenSSH version 9.5 through 9.7 (inclusive), when connected to an OpenSSH server version 9.5 or later, a logic error in the ssh(1) ObscureKeystrokeTiming feature (on by default) rendered this feature ineffective - a passive observer could still detect which network packets contained real keystrokes when the countermeasure was active because both fake and real keystroke packets were being sent unconditionally. This bug was found by Philippos Giavridis and also independently by Jacky Wei En Kung, Daniel Hugenroth and Alastair Beresford of the University of Cambridge Computer Lab. Worse, the unconditional sending of both fake and real keystroke packets broke another long-standing timing attack mitigation. Since OpenSSH 2.9.9 sshd(8) has sent fake keystoke echo packets for traffic received on TTYs in echo-off mode, such as when entering a password into su(8) or sudo(8). This bug rendered these fake keystroke echoes ineffective and could allow a passive observer of a SSH session to once again detect when echo was off and obtain fairly limited timing information about keystrokes in this situation (20ms granularity by default). This additional implication of the bug was identified by Jacky Wei En Kung, Daniel Hugenroth and Alastair Beresford and we thank them for their detailed analysis. This bug does not affect connections when ObscureKeystrokeTiming was disabled or sessions where no TTY was requested. Future deprecation notice ========================= OpenSSH plans to remove support for the DSA signature algorithm in early 2025. This release disables DSA by default at compile time. DSA, as specified in the SSHv2 protocol, is inherently weak - being limited to a 160 bit private key and use of the SHA1 digest. Its estimated security level is only 80 bits symmetric equivalent. OpenSSH has disabled DSA keys by default since 2015 but has retained run-time optional support for them. DSA was the only mandatory-to- implement algorithm in the SSHv2 RFCs, mostly because alternative algorithms were encumbered by patents when the SSHv2 protocol was specified. This has not been the case for decades at this point and better algorithms are well supported by all actively-maintained SSH implementations. We do not consider the costs of maintaining DSA in OpenSSH to be justified and hope that removing it from OpenSSH can accelerate its wider deprecation in supporting cryptography libraries. This release, and its deactivation of DSA by default at compile-time, marks the second step in our timeline to finally deprecate DSA. The final step of removing DSA support entirely is planned for the first OpenSSH release of 2025. DSA support may be re-enabled in OpenBSD by setting "DSAKEY=yes" in Makefile.inc. To enable DSA support in portable OpenSSH, pass the "--enable-dsa-keys" option to configure. Potentially-incompatible changes -------------------------------- * all: as mentioned above, the DSA signature algorithm is now disabled at compile time. * sshd(8): the server will now block client addresses that repeatedly fail authentication, repeatedly connect without ever completing authentication or that crash the server. See the discussion of PerSourcePenalties below for more information. Operators of servers that accept connections from many users, or servers that accept connections from addresses behind NAT or proxies may need to consider these settings. * sshd(8): the server has been split into a listener binary, sshd(8), and a per-session binary "sshd-session". This allows for a much smaller listener binary, as it no longer needs to support the SSH protocol. As part of this work, support for disabling privilege separation (which previously required code changes to disable) and disabling re-execution of sshd(8) has been removed. Further separation of sshd-session into additional, minimal binaries is planned for the future. * sshd(8): several log messages have changed. In particular, some log messages will be tagged with as originating from a process named "sshd-session" rather than "sshd". * ssh-keyscan(1): this tool previously emitted comment lines containing the hostname and SSH protocol banner to standard error. This release now emits them to standard output, but adds a new "-q" flag to silence them altogether. * sshd(8): (portable OpenSSH only) sshd will no longer use argv[0] as the PAM service name. A new "PAMServiceName" sshd_config(5) directive allows selecting the service name at runtime. This defaults to "sshd". bz2101 * (portable OpenSSH only) Automatically-generated files, such as configure, config.h.in, etc will now be checked in to the portable OpenSSH git release branch (e.g. V_9_8). This should ensure that the contents of the signed release branch exactly match the contents of the signed release tarball.
Pull up the following, requested by kim in ticket #1780: crypto/external/bsd/openssh/Makefile.inc up to 1.15 (+patch) crypto/external/bsd/openssh/bin/Makefile.inc up to 1.4 crypto/external/bsd/openssh/bin/scp/Makefile up to 1.6 crypto/external/bsd/openssh/bin/sftp/Makefile up to 1.11 crypto/external/bsd/openssh/bin/sftp-server/Makefile up to 1.4 crypto/external/bsd/openssh/bin/ssh/Makefile up to 1.20 crypto/external/bsd/openssh/bin/ssh-add/Makefile up to 1.3 crypto/external/bsd/openssh/bin/ssh-agent/Makefile up to 1.7 crypto/external/bsd/openssh/bin/ssh-keygen/Makefile up to 1.10 crypto/external/bsd/openssh/bin/ssh-keyscan/Makefile up to 1.6 crypto/external/bsd/openssh/bin/ssh-pkcs11-helper/Makefile up to 1.4 crypto/external/bsd/openssh/bin/sshd/Makefile up to 1.27 (+patch) crypto/external/bsd/openssh/dist/PROTOCOL.sshsig up to 1.1.1.2 crypto/external/bsd/openssh/dist/srclimit.c up to 1.3 crypto/external/bsd/openssh/dist/sftp-realpath.c up to 1.3 crypto/external/bsd/openssh/dist/sntrup761.c up to 1.3 crypto/external/bsd/openssh/dist/sntrup761.sh up to 1.1.1.2 crypto/external/bsd/openssh/dist/sshsig.c up to 1.12 crypto/external/bsd/openssh/dist/sshsig.h up to 1.1.1.5 crypto/external/bsd/openssh/dist/addr.c up to 1.6 crypto/external/bsd/openssh/dist/PROTOCOL.u2f up to 1.1.1.3 crypto/external/bsd/openssh/dist/sk-api.h up to 1.1.1.6 crypto/external/bsd/openssh/dist/sk-usbhid.c up to 1.9 crypto/external/bsd/openssh/dist/ssh-ecdsa-sk.c up to 1.4 crypto/external/bsd/openssh/dist/ssh-ed25519-sk.c up to 1.5 crypto/external/bsd/openssh/dist/ssh-sk-client.c up to 1.6 crypto/external/bsd/openssh/dist/ssh-sk-helper.8 up to 1.1.1.2 crypto/external/bsd/openssh/dist/ssh-sk-helper.c up to 1.7 crypto/external/bsd/openssh/dist/ssh-sk.c up to 1.8 crypto/external/bsd/openssh/dist/ssh-sk.h up to 1.1.1.2 crypto/external/bsd/openssh/dist/sshbuf-io.c up to 1.2 crypto/external/bsd/openssh/dist/addr.h up to 1.1.1.2 crypto/external/bsd/openssh/dist/kexsntrup761x25519.c up to 1.3 crypto/external/bsd/openssh/dist/cipher-chachapoly-libcrypto.c up to 1.3 crypto/external/bsd/openssh/dist/srclimit.h up to 1.1.1.1 crypto/external/bsd/openssh/dist/auth2-pubkeyfile.c up to 1.3 crypto/external/bsd/openssh/dist/sftp-usergroup.c up to 1.3 crypto/external/bsd/openssh/dist/sftp-usergroup.h up to 1.1.1.1 crypto/external/bsd/openssh/dist/ed25519.sh up to 1.1.1.1 crypto/external/bsd/openssh/dist/crc32.c delete crypto/external/bsd/openssh/dist/crc32.h delete crypto/external/bsd/openssh/dist/fe25519.c delete crypto/external/bsd/openssh/dist/fe25519.h delete crypto/external/bsd/openssh/dist/ge25519.c delete crypto/external/bsd/openssh/dist/ge25519.h delete crypto/external/bsd/openssh/dist/ge25519_base.data delete crypto/external/bsd/openssh/dist/kexsntrup4591761x25519.c delete crypto/external/bsd/openssh/dist/sc25519.c delete crypto/external/bsd/openssh/dist/sc25519.h delete crypto/external/bsd/openssh/dist/sntrup4591761.c delete crypto/external/bsd/openssh/dist/sntrup4591761.sh delete crypto/external/bsd/openssh/dist/uuencode.c delete crypto/external/bsd/openssh/dist/uuencode.h delete crypto/external/bsd/openssh/dist/verify.c delete crypto/external/bsd/openssh/dist/LICENCE up to 1.7 crypto/external/bsd/openssh/dist/PROTOCOL up to 1.23 crypto/external/bsd/openssh/dist/PROTOCOL.agent up to 1.15 crypto/external/bsd/openssh/dist/PROTOCOL.certkeys up to 1.13 crypto/external/bsd/openssh/dist/PROTOCOL.chacha20poly1305 up to 1.1.1.4 crypto/external/bsd/openssh/dist/PROTOCOL.key up to 1.1.1.3 crypto/external/bsd/openssh/dist/PROTOCOL.krl up to 1.1.1.5 crypto/external/bsd/openssh/dist/PROTOCOL.mux up to 1.12 crypto/external/bsd/openssh/dist/addrmatch.c up to 1.15 crypto/external/bsd/openssh/dist/auth-krb5.c up to 1.16 crypto/external/bsd/openssh/dist/auth-options.c up to 1.29 crypto/external/bsd/openssh/dist/auth-options.h up to 1.15 crypto/external/bsd/openssh/dist/auth-pam.c up to 1.21 crypto/external/bsd/openssh/dist/auth-passwd.c up to 1.13 crypto/external/bsd/openssh/dist/auth-rhosts.c up to 1.16 crypto/external/bsd/openssh/dist/auth.c up to 1.34 crypto/external/bsd/openssh/dist/auth.h up to 1.23 crypto/external/bsd/openssh/dist/auth2-chall.c up to 1.19 crypto/external/bsd/openssh/dist/auth2-gss.c up to 1.17 crypto/external/bsd/openssh/dist/auth2-hostbased.c up to 1.23 crypto/external/bsd/openssh/dist/auth2-kbdint.c up to 1.15 crypto/external/bsd/openssh/dist/auth2-krb5.c up to 1.10 crypto/external/bsd/openssh/dist/auth2-none.c up to 1.14 crypto/external/bsd/openssh/dist/auth2-passwd.c up to 1.16 crypto/external/bsd/openssh/dist/auth2-pubkey.c up to 1.34 crypto/external/bsd/openssh/dist/auth2.c up to 1.29 crypto/external/bsd/openssh/dist/authfd.c up to 1.27 crypto/external/bsd/openssh/dist/authfd.h up to 1.17 crypto/external/bsd/openssh/dist/authfile.c up to 1.28 crypto/external/bsd/openssh/dist/authfile.h up to 1.10 crypto/external/bsd/openssh/dist/canohost.c up to 1.16 crypto/external/bsd/openssh/dist/chacha.c up to 1.6 crypto/external/bsd/openssh/dist/chacha.h up to 1.3 crypto/external/bsd/openssh/dist/channels.c up to 1.42 crypto/external/bsd/openssh/dist/channels.h up to 1.26 crypto/external/bsd/openssh/dist/cipher-chachapoly.c up to 1.7 crypto/external/bsd/openssh/dist/cipher-chachapoly.h up to 1.3 crypto/external/bsd/openssh/dist/cipher.c up to 1.21 crypto/external/bsd/openssh/dist/cipher.h up to 1.17 crypto/external/bsd/openssh/dist/clientloop.c up to 1.39 crypto/external/bsd/openssh/dist/clientloop.h up to 1.18 crypto/external/bsd/openssh/dist/compat.c up to 1.26 crypto/external/bsd/openssh/dist/compat.h up to 1.18 crypto/external/bsd/openssh/dist/crypto_api.h up to 1.5 crypto/external/bsd/openssh/dist/dh.c up to 1.20 crypto/external/bsd/openssh/dist/dh.h up to 1.13 crypto/external/bsd/openssh/dist/digest-libc.c up to 1.8 crypto/external/bsd/openssh/dist/digest-openssl.c up to 1.9 crypto/external/bsd/openssh/dist/dispatch.c up to 1.11 crypto/external/bsd/openssh/dist/dns.c up to 1.23 crypto/external/bsd/openssh/dist/dns.h up to 1.13 crypto/external/bsd/openssh/dist/ed25519.c up to 1.6 crypto/external/bsd/openssh/dist/fatal.c up to 1.7 crypto/external/bsd/openssh/dist/getrrsetbyname.c up to 1.6 crypto/external/bsd/openssh/dist/gss-genr.c up to 1.11 crypto/external/bsd/openssh/dist/gss-serv.c up to 1.15 crypto/external/bsd/openssh/dist/hash.c up to 1.7 crypto/external/bsd/openssh/dist/hmac.c up to 1.8 crypto/external/bsd/openssh/dist/hostfile.c up to 1.23 crypto/external/bsd/openssh/dist/hostfile.h up to 1.11 crypto/external/bsd/openssh/dist/includes.h up to 1.9 crypto/external/bsd/openssh/dist/kex.c up to 1.34 crypto/external/bsd/openssh/dist/kex.h up to 1.24 crypto/external/bsd/openssh/dist/kexdh.c up to 1.10 crypto/external/bsd/openssh/dist/kexgen.c up to 1.7 crypto/external/bsd/openssh/dist/kexgexc.c up to 1.17 crypto/external/bsd/openssh/dist/kexgexs.c up to 1.23 crypto/external/bsd/openssh/dist/krl.c up to 1.23 crypto/external/bsd/openssh/dist/krl.h up to 1.6 crypto/external/bsd/openssh/dist/ldapauth.c up to 1.8 crypto/external/bsd/openssh/dist/ldapauth.h up to 1.6 crypto/external/bsd/openssh/dist/log.c up to 1.27 crypto/external/bsd/openssh/dist/log.h up to 1.17 crypto/external/bsd/openssh/dist/mac.c up to 1.16 crypto/external/bsd/openssh/dist/match.c up to 1.16 crypto/external/bsd/openssh/dist/match.h up to 1.11 crypto/external/bsd/openssh/dist/misc.c up to 1.35 crypto/external/bsd/openssh/dist/misc.h up to 1.27 crypto/external/bsd/openssh/dist/moduli up to 1.10 crypto/external/bsd/openssh/dist/moduli.c up to 1.17 crypto/external/bsd/openssh/dist/monitor.c up to 1.43 crypto/external/bsd/openssh/dist/monitor.h up to 1.13 crypto/external/bsd/openssh/dist/monitor_fdpass.c up to 1.9 crypto/external/bsd/openssh/dist/monitor_wrap.c up to 1.34 crypto/external/bsd/openssh/dist/monitor_wrap.h up to 1.23 crypto/external/bsd/openssh/dist/msg.c up to 1.11 crypto/external/bsd/openssh/dist/mux.c up to 1.35 crypto/external/bsd/openssh/dist/myproposal.h up to 1.24 crypto/external/bsd/openssh/dist/namespace.h up to 1.10 crypto/external/bsd/openssh/dist/nchan.c up to 1.14 crypto/external/bsd/openssh/dist/packet.c up to 1.50 crypto/external/bsd/openssh/dist/packet.h up to 1.26 crypto/external/bsd/openssh/dist/pathnames.h up to 1.15 crypto/external/bsd/openssh/dist/pfilter.c up to 1.8 (+patch) crypto/external/bsd/openssh/dist/poly1305.c up to 1.6 crypto/external/bsd/openssh/dist/progressmeter.c up to 1.15 crypto/external/bsd/openssh/dist/readconf.c up to 1.44 crypto/external/bsd/openssh/dist/readconf.h up to 1.34 crypto/external/bsd/openssh/dist/readpass.c up to 1.18 crypto/external/bsd/openssh/dist/rijndael.h up to 1.3 crypto/external/bsd/openssh/dist/sandbox-pledge.c up to 1.3 crypto/external/bsd/openssh/dist/sandbox-rlimit.c up to 1.7 crypto/external/bsd/openssh/dist/scp.1 up to 1.31 crypto/external/bsd/openssh/dist/scp.c up to 1.41 crypto/external/bsd/openssh/dist/servconf.c up to 1.44 crypto/external/bsd/openssh/dist/servconf.h up to 1.30 crypto/external/bsd/openssh/dist/serverloop.c up to 1.35 crypto/external/bsd/openssh/dist/session.c up to 1.38 crypto/external/bsd/openssh/dist/session.h up to 1.10 crypto/external/bsd/openssh/dist/sftp-client.c up to 1.35 crypto/external/bsd/openssh/dist/sftp-client.h up to 1.18 crypto/external/bsd/openssh/dist/sftp-common.c up to 1.14 crypto/external/bsd/openssh/dist/sftp-common.h up to 1.8 crypto/external/bsd/openssh/dist/sftp-glob.c up to 1.15 crypto/external/bsd/openssh/dist/sftp-server-main.c up to 1.8 crypto/external/bsd/openssh/dist/sftp-server.8 up to 1.14 crypto/external/bsd/openssh/dist/sftp-server.c up to 1.30 crypto/external/bsd/openssh/dist/sftp.1 up to 1.30 crypto/external/bsd/openssh/dist/sftp.c up to 1.39 crypto/external/bsd/openssh/dist/ssh-add.1 up to 1.18 crypto/external/bsd/openssh/dist/ssh-add.c up to 1.30 crypto/external/bsd/openssh/dist/ssh-agent.1 up to 1.19 crypto/external/bsd/openssh/dist/ssh-agent.c up to 1.37 crypto/external/bsd/openssh/dist/ssh-dss.c up to 1.18 crypto/external/bsd/openssh/dist/ssh-ecdsa.c up to 1.15 crypto/external/bsd/openssh/dist/ssh-ed25519.c up to 1.10 crypto/external/bsd/openssh/dist/ssh-gss.h up to 1.10 crypto/external/bsd/openssh/dist/ssh-keygen.1 up to 1.34 crypto/external/bsd/openssh/dist/ssh-keygen.c up to 1.46 crypto/external/bsd/openssh/dist/ssh-keyscan.1 up to 1.18 crypto/external/bsd/openssh/dist/ssh-keyscan.c up to 1.32 crypto/external/bsd/openssh/dist/ssh-keysign.8 up to 1.14 crypto/external/bsd/openssh/dist/ssh-keysign.c up to 1.24 crypto/external/bsd/openssh/dist/ssh-pkcs11-client.c up to 1.19 crypto/external/bsd/openssh/dist/ssh-pkcs11-helper.8 up to 1.12 crypto/external/bsd/openssh/dist/ssh-pkcs11-helper.c up to 1.22 crypto/external/bsd/openssh/dist/ssh-pkcs11.c up to 1.26 crypto/external/bsd/openssh/dist/ssh-pkcs11.h up to 1.9 crypto/external/bsd/openssh/dist/ssh-rsa.c up to 1.19 crypto/external/bsd/openssh/dist/ssh-xmss.c up to 1.6 crypto/external/bsd/openssh/dist/ssh.1 up to 1.39 crypto/external/bsd/openssh/dist/ssh.c up to 1.45 crypto/external/bsd/openssh/dist/ssh.h up to 1.13 crypto/external/bsd/openssh/dist/ssh2.h up to 1.15 crypto/external/bsd/openssh/dist/ssh_api.c up to 1.15 crypto/external/bsd/openssh/dist/ssh_config up to 1.16 crypto/external/bsd/openssh/dist/ssh_config.5 up to 1.40 crypto/external/bsd/openssh/dist/sshbuf-getput-basic.c up to 1.12 crypto/external/bsd/openssh/dist/sshbuf-getput-crypto.c up to 1.11 crypto/external/bsd/openssh/dist/sshbuf-misc.c up to 1.14 crypto/external/bsd/openssh/dist/sshbuf.c up to 1.14 crypto/external/bsd/openssh/dist/sshbuf.h up to 1.19 crypto/external/bsd/openssh/dist/sshconnect.c up to 1.37 crypto/external/bsd/openssh/dist/sshconnect.h up to 1.17 crypto/external/bsd/openssh/dist/sshconnect2.c up to 1.46 crypto/external/bsd/openssh/dist/sshd.8 up to 1.31 crypto/external/bsd/openssh/dist/sshd.c up to 1.50 crypto/external/bsd/openssh/dist/sshd_config up to 1.28 crypto/external/bsd/openssh/dist/sshd_config.5 up to 1.42 crypto/external/bsd/openssh/dist/ssherr.c up to 1.10 crypto/external/bsd/openssh/dist/ssherr.h up to 1.4 crypto/external/bsd/openssh/dist/sshkey-xmss.c up to 1.10 crypto/external/bsd/openssh/dist/sshkey-xmss.h up to 1.5 crypto/external/bsd/openssh/dist/sshkey.c up to 1.32 crypto/external/bsd/openssh/dist/sshkey.h up to 1.19 crypto/external/bsd/openssh/dist/sshlogin.c up to 1.13 crypto/external/bsd/openssh/dist/sshpty.c up to 1.8 crypto/external/bsd/openssh/dist/ttymodes.c up to 1.12 crypto/external/bsd/openssh/dist/uidswap.c up to 1.10 crypto/external/bsd/openssh/dist/umac.c up to 1.22 crypto/external/bsd/openssh/dist/umac.h up to 1.10 crypto/external/bsd/openssh/dist/utf8.c up to 1.9 crypto/external/bsd/openssh/dist/utf8.h up to 1.5 crypto/external/bsd/openssh/dist/version.h up to 1.44 crypto/external/bsd/openssh/dist/xmalloc.c up to 1.13 crypto/external/bsd/openssh/dist/xmalloc.h up to 1.16 crypto/external/bsd/openssh/dist/xmss_hash.c up to 1.3 crypto/external/bsd/openssh/dist/moduli-gen/Makefile up to 1.3 crypto/external/bsd/openssh/dist/moduli-gen/moduli-gen.sh up to 1.1.1.3 crypto/external/bsd/openssh/dist/moduli-gen/moduli.2048 up to 1.16 crypto/external/bsd/openssh/dist/moduli-gen/moduli.3072 up to 1.18 crypto/external/bsd/openssh/dist/moduli-gen/moduli.4096 up to 1.18 crypto/external/bsd/openssh/dist/moduli-gen/moduli.6144 up to 1.18 crypto/external/bsd/openssh/dist/moduli-gen/moduli.7680 up to 1.18 crypto/external/bsd/openssh/dist/moduli-gen/moduli.8192 up to 1.18 crypto/external/bsd/openssh/lib/Makefile up to 1.38 crypto/external/bsd/openssh/lib/shlib_version up to 1.36 crypto/external/bsd/openssh/openssh2netbsd up to 1.4 lib/libpam/modules/pam_ssh/Makefile up to 1.13 lib/libpam/modules/pam_ssh/pam_ssh.c up to 1.30 distrib/sets/lists/base/shl.mi (apply patch) distrib/sets/lists/debug/shl.mi (apply patch) doc/3RDPARTY (apply patch) Update OpenSSH to 9.6.
Pull up following revision(s) (requested by maya in ticket #322): distrib/sets/lists/base/shl.mi: revision 1.953 distrib/sets/lists/debug/shl.mi: revision 1.315 crypto/external/bsd/openssh/dist/ed25519.sh up to 1.1.1.1 crypto/external/bsd/openssh/dist/fe25519.c delete crypto/external/bsd/openssh/dist/fe25519.h delete crypto/external/bsd/openssh/dist/ge25519.c delete crypto/external/bsd/openssh/dist/ge25519.h delete crypto/external/bsd/openssh/dist/ge25519_base.data delete crypto/external/bsd/openssh/dist/sc25519.c delete crypto/external/bsd/openssh/dist/sc25519.h delete crypto/external/bsd/openssh/dist/verify.c delete crypto/external/bsd/openssh/bin/sftp/Makefile up to 1.11 crypto/external/bsd/openssh/bin/ssh/Makefile up to 1.19 crypto/external/bsd/openssh/bin/ssh-agent/Makefile up to 1.7 crypto/external/bsd/openssh/bin/ssh-keygen/Makefile up to 1.10 crypto/external/bsd/openssh/bin/sshd/Makefile up to 1.27 crypto/external/bsd/openssh/dist/LICENCE up to 1.7 crypto/external/bsd/openssh/dist/PROTOCOL up to 1.21 crypto/external/bsd/openssh/dist/addr.c up to 1.5 crypto/external/bsd/openssh/dist/addr.h up to 1.1.1.2 crypto/external/bsd/openssh/dist/auth-passwd.c up to 1.13 crypto/external/bsd/openssh/dist/auth-rhosts.c up to 1.16 crypto/external/bsd/openssh/dist/auth.c up to 1.34 crypto/external/bsd/openssh/dist/auth2-hostbased.c up to 1.23 crypto/external/bsd/openssh/dist/auth2-none.c up to 1.14 crypto/external/bsd/openssh/dist/auth2-pubkey.c up to 1.33 crypto/external/bsd/openssh/dist/auth2-pubkeyfile.c up to 1.3 crypto/external/bsd/openssh/dist/auth2.c up to 1.27 crypto/external/bsd/openssh/dist/authfd.c up to 1.26 crypto/external/bsd/openssh/dist/authfile.c up to 1.28 crypto/external/bsd/openssh/dist/canohost.c up to 1.15 crypto/external/bsd/openssh/dist/channels.c up to 1.40 crypto/external/bsd/openssh/dist/channels.h up to 1.24 crypto/external/bsd/openssh/dist/cipher.h up to 1.16 crypto/external/bsd/openssh/dist/clientloop.c up to 1.37 crypto/external/bsd/openssh/dist/compat.c up to 1.26 crypto/external/bsd/openssh/dist/compat.h up to 1.18 crypto/external/bsd/openssh/dist/crypto_api.h up to 1.5 crypto/external/bsd/openssh/dist/dispatch.c up to 1.11 crypto/external/bsd/openssh/dist/dns.c up to 1.23 crypto/external/bsd/openssh/dist/dns.h up to 1.13 crypto/external/bsd/openssh/dist/ed25519.c up to 1.6 crypto/external/bsd/openssh/dist/hostfile.c up to 1.23 crypto/external/bsd/openssh/dist/kex.c up to 1.32 crypto/external/bsd/openssh/dist/kex.h up to 1.22 crypto/external/bsd/openssh/dist/kexgexs.c up to 1.22 crypto/external/bsd/openssh/dist/krl.c up to 1.22 crypto/external/bsd/openssh/dist/misc.c up to 1.33 crypto/external/bsd/openssh/dist/misc.h up to 1.25 crypto/external/bsd/openssh/dist/moduli.c up to 1.17 crypto/external/bsd/openssh/dist/monitor.c up to 1.42 crypto/external/bsd/openssh/dist/monitor.h up to 1.13 crypto/external/bsd/openssh/dist/monitor_wrap.c up to 1.32 crypto/external/bsd/openssh/dist/mux.c up to 1.33 crypto/external/bsd/openssh/dist/packet.c up to 1.48 crypto/external/bsd/openssh/dist/progressmeter.c up to 1.14 crypto/external/bsd/openssh/dist/readconf.c up to 1.41 crypto/external/bsd/openssh/dist/readconf.h up to 1.31 crypto/external/bsd/openssh/dist/scp.1 up to 1.30 crypto/external/bsd/openssh/dist/scp.c up to 1.39 crypto/external/bsd/openssh/dist/servconf.c up to 1.42 crypto/external/bsd/openssh/dist/servconf.h up to 1.29 crypto/external/bsd/openssh/dist/serverloop.c up to 1.34 crypto/external/bsd/openssh/dist/session.c up to 1.37 crypto/external/bsd/openssh/dist/session.h up to 1.10 crypto/external/bsd/openssh/dist/sftp-client.c up to 1.33 crypto/external/bsd/openssh/dist/sftp-glob.c up to 1.14 crypto/external/bsd/openssh/dist/sftp-server.c up to 1.29 crypto/external/bsd/openssh/dist/sftp.1 up to 1.29 crypto/external/bsd/openssh/dist/sftp.c up to 1.38 crypto/external/bsd/openssh/dist/sntrup761.c up to 1.3 crypto/external/bsd/openssh/dist/sntrup761.sh up to 1.1.1.2 crypto/external/bsd/openssh/dist/ssh-add.c up to 1.28 crypto/external/bsd/openssh/dist/ssh-agent.1 up to 1.18 crypto/external/bsd/openssh/dist/ssh-agent.c up to 1.35 crypto/external/bsd/openssh/dist/ssh-dss.c up to 1.18 crypto/external/bsd/openssh/dist/ssh-ecdsa-sk.c up to 1.4 crypto/external/bsd/openssh/dist/ssh-ecdsa.c up to 1.15 crypto/external/bsd/openssh/dist/ssh-ed25519-sk.c up to 1.5 crypto/external/bsd/openssh/dist/ssh-ed25519.c up to 1.10 crypto/external/bsd/openssh/dist/ssh-keygen.1 up to 1.33 crypto/external/bsd/openssh/dist/ssh-keygen.c up to 1.45 crypto/external/bsd/openssh/dist/ssh-keyscan.1 up to 1.18 crypto/external/bsd/openssh/dist/ssh-keyscan.c up to 1.31 crypto/external/bsd/openssh/dist/ssh-pkcs11-helper.8 up to 1.12 crypto/external/bsd/openssh/dist/ssh-pkcs11.c up to 1.25 crypto/external/bsd/openssh/dist/ssh-rsa.c up to 1.19 crypto/external/bsd/openssh/dist/ssh-sk-helper.c up to 1.7 crypto/external/bsd/openssh/dist/ssh-xmss.c up to 1.6 crypto/external/bsd/openssh/dist/ssh.1 up to 1.36 crypto/external/bsd/openssh/dist/ssh.c up to 1.43 crypto/external/bsd/openssh/dist/ssh_api.c up to 1.15 crypto/external/bsd/openssh/dist/ssh_config.5 up to 1.37 crypto/external/bsd/openssh/dist/sshbuf.c up to 1.14 crypto/external/bsd/openssh/dist/sshbuf.h up to 1.19 crypto/external/bsd/openssh/dist/sshconnect.c up to 1.35 crypto/external/bsd/openssh/dist/sshconnect2.c up to 1.44 crypto/external/bsd/openssh/dist/sshd.8 up to 1.30 crypto/external/bsd/openssh/dist/sshd.c up to 1.49 crypto/external/bsd/openssh/dist/sshd_config.5 up to 1.41 crypto/external/bsd/openssh/dist/sshkey-xmss.c up to 1.10 crypto/external/bsd/openssh/dist/sshkey-xmss.h up to 1.5 crypto/external/bsd/openssh/dist/sshkey.c up to 1.30 crypto/external/bsd/openssh/dist/sshkey.h up to 1.18 crypto/external/bsd/openssh/dist/umac.c up to 1.22 crypto/external/bsd/openssh/dist/version.h up to 1.42 crypto/external/bsd/openssh/dist/moduli-gen/moduli.2048 up to 1.14 crypto/external/bsd/openssh/dist/moduli-gen/moduli.3072 up to 1.16 crypto/external/bsd/openssh/dist/moduli-gen/moduli.4096 up to 1.16 crypto/external/bsd/openssh/dist/moduli-gen/moduli.6144 up to 1.16 crypto/external/bsd/openssh/dist/moduli-gen/moduli.7680 up to 1.16 crypto/external/bsd/openssh/dist/moduli-gen/moduli.8192 up to 1.16 crypto/external/bsd/openssh/lib/Makefile up to 1.37 crypto/external/bsd/openssh/lib/shlib_version up to 1.34 doc/3DPARTY (apply patch) Import OpenSSH 9.3p2
Merge changes between OpenSSH-9.1 and OpenSSH-9.3
Import OpenSSH 9.3 + the fix from p2 for the PKCS#11 remote provider
The previous version was OpenSSH 9.1
OpenSSH 9.3p2 (2023-07-19)
OpenSSH 9.3p2 was released on 2023-07-19. It is available from the
mirrors listed at https://www.openssh.com/.
OpenSSH is a 100% complete SSH protocol 2.0 implementation and
includes sftp client and server support.
Once again, we would like to thank the OpenSSH community for their
continued support of the project, especially those who contributed
code or patches, reported bugs, tested snapshots or donated to the
project. More information on donations may be found at:
https://www.openssh.com/donations.html
Changes since OpenSSH 9.3
=========================
This release fixes a security bug.
Security
========
Fix CVE-2023-38408 - a condition where specific libaries loaded via
ssh-agent(1)'s PKCS#11 support could be abused to achieve remote
code execution via a forwarded agent socket if the following
conditions are met:
* Exploitation requires the presence of specific libraries on
the victim system.
* Remote exploitation requires that the agent was forwarded
to an attacker-controlled system.
Exploitation can also be prevented by starting ssh-agent(1) with an
empty PKCS#11/FIDO allowlist (ssh-agent -P '') or by configuring
an allowlist that contains only specific provider libraries.
This vulnerability was discovered and demonstrated to be exploitable
by the Qualys Security Advisory team.
In addition to removing the main precondition for exploitation,
this release removes the ability for remote ssh-agent(1) clients
to load PKCS#11 modules by default (see below).
Potentially-incompatible changes
--------------------------------
* ssh-agent(8): the agent will now refuse requests to load PKCS#11
modules issued by remote clients by default. A flag has been added
to restore the previous behaviour "-Oallow-remote-pkcs11".
Note that ssh-agent(8) depends on the SSH client to identify
requests that are remote. The OpenSSH >=8.9 ssh(1) client does
this, but forwarding access to an agent socket using other tools
may circumvent this restriction.
Checksums:
==========
- SHA1 (openssh-9.3p2.tar.gz) = 219cf700c317f400bb20b001c0406056f7188ea4
- SHA256 (openssh-9.3p2.tar.gz) = IA6+FH9ss/EB/QzfngJEKvfdyimN/9n0VoeOfMrGdug=
Please note that the SHA256 signatures are base64 encoded and not
hexadecimal (which is the default for most checksum tools). The PGP
key used to sign the releases is available from the mirror sites:
https://cdn.openbsd.org/pub/OpenBSD/OpenSSH/RELEASE_KEY.asc
Reporting Bugs:
===============
- Please read https://www.openssh.com/report.html
Security bugs should be reported directly to openssh@openssh.com
OpenSSH 9.3/9.3p1 (2023-03-15)
OpenSSH 9.3 was released on 2023-03-15. It is available from the
mirrors listed at https://www.openssh.com/.
OpenSSH is a 100% complete SSH protocol 2.0 implementation and
includes sftp client and server support.
Once again, we would like to thank the OpenSSH community for their
continued support of the project, especially those who contributed
code or patches, reported bugs, tested snapshots or donated to the
project. More information on donations may be found at:
https://www.openssh.com/donations.html
Changes since OpenSSH 9.2
=========================
This release fixes a number of security bugs.
Security
========
This release contains fixes for a security problem and a memory
safety problem. The memory safety problem is not believed to be
exploitable, but we report most network-reachable memory faults as
security bugs.
* ssh-add(1): when adding smartcard keys to ssh-agent(1) with the
per-hop destination constraints (ssh-add -h ...) added in OpenSSH
8.9, a logic error prevented the constraints from being
communicated to the agent. This resulted in the keys being added
without constraints. The common cases of non-smartcard keys and
keys without destination constraints are unaffected. This problem
was reported by Luci Stanescu.
* ssh(1): Portable OpenSSH provides an implementation of the
getrrsetbyname(3) function if the standard library does not
provide it, for use by the VerifyHostKeyDNS feature. A
specifically crafted DNS response could cause this function to
perform an out-of-bounds read of adjacent stack data, but this
condition does not appear to be exploitable beyond denial-of-
service to the ssh(1) client.
The getrrsetbyname(3) replacement is only included if the system's
standard library lacks this function and portable OpenSSH was not
compiled with the ldns library (--with-ldns). getrrsetbyname(3) is
only invoked if using VerifyHostKeyDNS to fetch SSHFP records. This
problem was found by the Coverity static analyzer.
New features
------------
* ssh-keygen(1), ssh-keyscan(1): accept -Ohashalg=sha1|sha256 when
outputting SSHFP fingerprints to allow algorithm selection. bz3493
* sshd(8): add a `sshd -G` option that parses and prints the
effective configuration without attempting to load private keys
and perform other checks. This allows usage of the option before
keys have been generated and for configuration evaluation and
verification by unprivileged users.
Bugfixes
--------
* scp(1), sftp(1): fix progressmeter corruption on wide displays;
bz3534
* ssh-add(1), ssh-keygen(1): use RSA/SHA256 when testing usability
of private keys as some systems are starting to disable RSA/SHA1
in libcrypto.
* sftp-server(8): fix a memory leak. GHPR363
* ssh(1), sshd(8), ssh-keyscan(1): remove vestigal protocol
compatibility code and simplify what's left.
* Fix a number of low-impact Coverity static analysis findings.
These include several reported via bz2687
* ssh_config(5), sshd_config(5): mention that some options are not
first-match-wins.
* Rework logging for the regression tests. Regression tests will now
capture separate logs for each ssh and sshd invocation in a test.
* ssh(1): make `ssh -Q CASignatureAlgorithms` work as the manpage
says it should; bz3532.
* ssh(1): ensure that there is a terminating newline when adding a
new entry to known_hosts; bz3529
Portability
-----------
* sshd(8): harden Linux seccomp sandbox. Move to an allowlist of
mmap(2), madvise(2) and futex(2) flags, removing some concerning
kernel attack surface.
* sshd(8): improve Linux seccomp-bpf sandbox for older systems;
bz3537
Checksums:
==========
- SHA1 (openssh-9.3.tar.gz) = 5f9d2f73ddfe94f3f0a78bdf46704b6ad7b66ec7
- SHA256 (openssh-9.3.tar.gz) = eRcXkFZByz70DUBUcyIdvU0pVxP2X280FrmV8pyUdrk=
- SHA1 (openssh-9.3p1.tar.gz) = 610959871bf8d6baafc3525811948f85b5dd84ab
- SHA256 (openssh-9.3p1.tar.gz) = 6bq6dwGnalHz2Fpiw4OjydzZf6kAuFm8fbEUwYaK+Kg=
Please note that the SHA256 signatures are base64 encoded and not
hexadecimal (which is the default for most checksum tools). The PGP
key used to sign the releases is available from the mirror sites:
https://cdn.openbsd.org/pub/OpenBSD/OpenSSH/RELEASE_KEY.asc
Reporting Bugs:
===============
- Please read https://www.openssh.com/report.html
Security bugs should be reported directly to openssh@openssh.com
OpenSSH 9.2/9.2p1 (2023-02-02)
OpenSSH 9.2 was released on 2023-02-02. It is available from the
mirrors listed at https://www.openssh.com/.
OpenSSH is a 100% complete SSH protocol 2.0 implementation and
includes sftp client and server support.
Once again, we would like to thank the OpenSSH community for their
continued support of the project, especially those who contributed
code or patches, reported bugs, tested snapshots or donated to the
project. More information on donations may be found at:
https://www.openssh.com/donations.html
Changes since OpenSSH 9.1
=========================
This release fixes a number of security bugs.
Security
========
This release contains fixes for two security problems and a memory
safety problem. The memory safety problem is not believed to be
exploitable, but we report most network-reachable memory faults as
security bugs.
* sshd(8): fix a pre-authentication double-free memory fault
introduced in OpenSSH 9.1. This is not believed to be exploitable,
and it occurs in the unprivileged pre-auth process that is
subject to chroot(2) and is further sandboxed on most major
platforms.
* ssh(8): in OpenSSH releases after 8.7, the PermitRemoteOpen option
would ignore its first argument unless it was one of the special
keywords "any" or "none", causing the permission list to fail open
if only one permission was specified. bz3515
* ssh(1): if the CanonicalizeHostname and CanonicalizePermittedCNAMEs
options were enabled, and the system/libc resolver did not check
that names in DNS responses were valid, then use of these options
could allow an attacker with control of DNS to include invalid
characters (possibly including wildcards) in names added to
known_hosts files when they were updated. These names would still
have to match the CanonicalizePermittedCNAMEs allow-list, so
practical exploitation appears unlikely.
Potentially-incompatible changes
--------------------------------
* ssh(1): add a new EnableEscapeCommandline ssh_config(5) option that
controls whether the client-side ~C escape sequence that provides a
command-line is available. Among other things, the ~C command-line
could be used to add additional port-forwards at runtime.
This option defaults to "no", disabling the ~C command-line that
was previously enabled by default. Turning off the command-line
allows platforms that support sandboxing of the ssh(1) client
(currently only OpenBSD) to use a stricter default sandbox policy.
New features
------------
* sshd(8): add support for channel inactivity timeouts via a new
sshd_config(5) ChannelTimeout directive. This allows channels that
have not seen traffic in a configurable interval to be
automatically closed. Different timeouts may be applied to session,
X11, agent and TCP forwarding channels.
* sshd(8): add a sshd_config UnusedConnectionTimeout option to
terminate client connections that have no open channels for a
length of time. This complements the ChannelTimeout option above.
* sshd(8): add a -V (version) option to sshd like the ssh client has.
* ssh(1): add a "Host" line to the output of ssh -G showing the
original hostname argument. bz3343
* scp(1), sftp(1): add a -X option to both scp(1) and sftp(1) to
allow control over some SFTP protocol parameters: the copy buffer
length and the number of in-flight requests, both of which are used
during upload/download. Previously these could be controlled in
sftp(1) only. This makes them available in both SFTP protocol
clients using the same option character sequence.
* ssh-keyscan(1): allow scanning of complete CIDR address ranges,
e.g. "ssh-keyscan 192.168.0.0/24". If a CIDR range is passed, then
it will be expanded to all possible addresses in the range
including the all-0s and all-1s addresses. bz#976
* ssh(1): support dynamic remote port forwarding in escape
command-line's -R processing. bz#3499
Bugfixes
--------
* ssh(1): when restoring non-blocking mode to stdio fds, restore
exactly the flags that ssh started with and don't just clobber them
with zero, as this could also remove the append flag from the set.
bz3523
* ssh(1): avoid printf("%s", NULL) if using UserKnownHostsFile=none
and a hostkey in one of the system known hosts file changes.
* scp(1): switch scp from using pipes to a socket-pair for
communication with its ssh sub-processes, matching how sftp(1)
operates.
* sshd(8): clear signal mask early in main(); sshd may have been
started with one or more signals masked (sigprocmask(2) is not
cleared on fork/exec) and this could interfere with various things,
e.g. the login grace timer. Execution environments that fail to
clear the signal mask before running sshd are clearly broken, but
apparently they do exist.
* ssh(1): warn if no host keys for hostbased auth can be loaded.
* sshd(8): Add server debugging for hostbased auth that is queued and
sent to the client after successful authentication, but also logged
to assist in diagnosis of HostbasedAuthentication problems. bz3507
* ssh(1): document use of the IdentityFile option as being usable to
list public keys as well as private keys. GHPR352
* sshd(8): check for and disallow MaxStartups values less than or
equal to zero during config parsing, rather than failing later at
runtime. bz3489
* ssh-keygen(1): fix parsing of hex cert expiry times specified on
the command-line when acting as a CA.
* scp(1): when scp(1) is using the SFTP protocol for transport (the
default), better match scp/rcp's handling of globs that don't match
the globbed characters but do match literally (e.g. trying to
transfer a file named "foo.[1]"). Previously scp(1) in SFTP mode
would not match these pathnames but legacy scp/rcp mode would.
bz3488
* ssh-agent(1): document the "-O no-restrict-websafe" command-line
option.
* ssh(1): honour user's umask(2) if it is more restrictive then the
ssh default (022).
Portability
-----------
* sshd(8): allow writev(2) in the Linux seccomp sandbox. This seems
to be used by recent glibcs at least in some configurations during
error conditions. bz3512.
* sshd(8): simply handling of SSH_CONNECTION PAM env var, removing
global variable and checking the return value from pam_putenv.
bz3508
* sshd(8): disable SANDBOX_SECCOMP_FILTER_DEBUG that was mistakenly
enabled during the OpenSSH 9.1 release cycle.
* misc: update autotools and regenerate the config files using the
latest autotools
* all: use -fzero-call-used-regs=used on clang 15 instead of
-fzero-call-used-reg=all, as some versions of clang 15 have
miscompile code when it was enabled. bz3475
* sshd(8): defer PRNG seeding until after the initial closefrom(2)
call. PRNG seeding will initialize OpenSSL, and some engine
providers (e.g. Intel's QAT) will open descriptors for their own
use that closefrom(2) could clobber. bz3483
* misc: in the poll(2)/ppoll(2) compatibility code, avoid assuming
the layout of fd_set.
* sftp-server(8), ssh-agent(1): fix ptrace(2) disabling on older
FreeBSD kernels. Some versions do not support using id 0 to refer
to the current PID for procctl, so try again with getpid()
explicitly before failing.
* configure.ac: fix -Wstrict-prototypes in configure test code.
Clang 16 now warns on this and legacy prototypes will be removed
in C23. GHPR355
* configure.ac: fix setres*id checks to work with clang-16. glibc
has the prototypes for setresuid behind _GNU_SOURCE, and clang 16
will error out on implicit function definitions. bz3497
Checksums:
==========
- SHA1 (openssh-9.2.tar.gz) = e4b806b7c81b87d6c90afe97b3d016ba6cf3ba1c
- SHA256 (openssh-9.2.tar.gz) = yYe9uaaWSeetXGXOxuaaEiIsLnvITmGW+l5dgMZb9QU=
- SHA1 (openssh-9.2p1.tar.gz) = 3b172b8e971773a7018bbf3231f6589ae539ca4b
- SHA256 (openssh-9.2p1.tar.gz) = P2bb8WVftF9Q4cVtpiqwEhjCKIB7ITONY068351xz0Y=
Please note that the SHA256 signatures are base64 encoded and not
hexadecimal (which is the default for most checksum tools). The PGP
key used to sign the releases is available from the mirror sites:
https://cdn.openbsd.org/pub/OpenBSD/OpenSSH/RELEASE_KEY.asc
Reporting Bugs:
===============
- Please read https://www.openssh.com/report.html
Security bugs should be reported directly to openssh@openssh.com
merge conflicts between OpenSSH-8.9 and OpenSSH-9.0
Import OpenSSH-9.0
Changes since OpenSSH 8.9
=========================
This release is focused on bug fixing.
Potentially-incompatible changes
--------------------------------
This release switches scp(1) from using the legacy scp/rcp protocol
to using the SFTP protocol by default.
Legacy scp/rcp performs wildcard expansion of remote filenames (e.g.
"scp host:* .") through the remote shell. This has the side effect of
requiring double quoting of shell meta-characters in file names
included on scp(1) command-lines, otherwise they could be interpreted
as shell commands on the remote side.
This creates one area of potential incompatibility: scp(1) when using
the SFTP protocol no longer requires this finicky and brittle quoting,
and attempts to use it may cause transfers to fail. We consider the
removal of the need for double-quoting shell characters in file names
to be a benefit and do not intend to introduce bug-compatibility for
legacy scp/rcp in scp(1) when using the SFTP protocol.
Another area of potential incompatibility relates to the use of remote
paths relative to other user's home directories, for example -
"scp host:~user/file /tmp". The SFTP protocol has no native way to
expand a ~user path. However, sftp-server(8) in OpenSSH 8.7 and later
support a protocol extension "expand-path@openssh.com" to support
this.
In case of incompatibility, the scp(1) client may be instructed to use
the legacy scp/rcp using the -O flag.
New features
------------
* ssh(1), sshd(8): use the hybrid Streamlined NTRU Prime + x25519 key
exchange method by default ("sntrup761x25519-sha512@openssh.com").
The NTRU algorithm is believed to resist attacks enabled by future
quantum computers and is paired with the X25519 ECDH key exchange
(the previous default) as a backstop against any weaknesses in
NTRU Prime that may be discovered in the future. The combination
ensures that the hybrid exchange offers at least as good security
as the status quo.
We are making this change now (i.e. ahead of cryptographically-
relevant quantum computers) to prevent "capture now, decrypt
later" attacks where an adversary who can record and store SSH
session ciphertext would be able to decrypt it once a sufficiently
advanced quantum computer is available.
* sftp-server(8): support the "copy-data" extension to allow server-
side copying of files/data, following the design in
draft-ietf-secsh-filexfer-extensions-00. bz2948
* sftp(1): add a "cp" command to allow the sftp client to perform
server-side file copies.
Bugfixes
--------
* ssh(1), sshd(8): upstream: fix poll(2) spin when a channel's output
fd closes without data in the channel buffer. bz3405 and bz3411
* sshd(8): pack pollfd array in server listen/accept loop. Could
cause the server to hang/spin when MaxStartups > RLIMIT_NOFILE
* ssh-keygen(1): avoid NULL deref via the find-principals and
check-novalidate operations. bz3409 and GHPR307 respectively.
* scp(1): fix a memory leak in argument processing. bz3404
* sshd(8): don't try to resolve ListenAddress directives in the sshd
re-exec path. They are unused after re-exec and parsing errors
(possible for example if the host's network configuration changed)
could prevent connections from being accepted.
* sshd(8): when refusing a public key authentication request from a
client for using an unapproved or unsupported signature algorithm
include the algorithm name in the log message to make debugging
easier.
Portability
-----------
* sshd(8): refactor platform-specific locked account check, fixing
an incorrect free() on platforms with both libiaf and shadow
passwords (probably only Unixware) GHPR284,
* ssh(1), sshd(8): Fix possible integer underflow in scan_scaled(3)
parsing of K/M/G/etc quantities. bz#3401.
* sshd(8): provide killpg implementation (mostly for Tandem NonStop)
GHPR301.
* Check for missing ftruncate prototype. GHPR301
* sshd(8): default to not using sandbox when cross compiling. On most
systems poll(2) does not work when the number of FDs is reduced
with setrlimit, so assume it doesn't when cross compiling and we
can't run the test. bz#3398.
* sshd(8): allow ppoll_time64 in seccomp sandbox. Should fix sandbox
violations on some (at least i386 and armhf) 32bit Linux platforms.
bz#3396.
* Improve detection of -fzero-call-used-regs=all support in
configure script.
Merge differences between openssh-8.8 and openssh-8.9
Import OpenSSH 8.9. Future deprecation notice ========================= A near-future release of OpenSSH will switch scp(1) from using the legacy scp/rcp protocol to using SFTP by default. Legacy scp/rcp performs wildcard expansion of remote filenames (e.g. "scp host:* .") through the remote shell. This has the side effect of requiring double quoting of shell meta-characters in file names included on scp(1) command-lines, otherwise they could be interpreted as shell commands on the remote side. This creates one area of potential incompatibility: scp(1) when using the SFTP protocol no longer requires this finicky and brittle quoting, and attempts to use it may cause transfers to fail. We consider the removal of the need for double-quoting shell characters in file names to be a benefit and do not intend to introduce bug-compatibility for legacy scp/rcp in scp(1) when using the SFTP protocol. Another area of potential incompatibility relates to the use of remote paths relative to other user's home directories, for example - "scp host:~user/file /tmp". The SFTP protocol has no native way to expand a ~user path. However, sftp-server(8) in OpenSSH 8.7 and later support a protocol extension "expand-path@openssh.com" to support this. Security Near Miss ================== * sshd(8): fix an integer overflow in the user authentication path that, in conjunction with other logic errors, could have yielded unauthenticated access under difficult to exploit conditions. This situation is not exploitable because of independent checks in the privilege separation monitor. Privilege separation has been enabled by default in since openssh-3.2.2 (released in 2002) and has been mandatory since openssh-7.5 (released in 2017). Moreover, portable OpenSSH has used toolchain features available in most modern compilers to abort on signed integer overflow since openssh-6.5 (released in 2014). Thanks to Malcolm Stagg for finding and reporting this bug. Potentially-incompatible changes ================================ * sshd(8), portable OpenSSH only: this release removes in-built support for MD5-hashed passwords. If you require these on your system then we recommend linking against libxcrypt or similar. * This release modifies the FIDO security key middleware interface and increments SSH_SK_VERSION_MAJOR. Changes since OpenSSH 8.8 ========================= This release includes a number of new features. New features ------------ * ssh(1), sshd(8), ssh-add(1), ssh-agent(1): add a system for restricting forwarding and use of keys added to ssh-agent(1) A detailed description of the feature is available at https://www.openssh.com/agent-restrict.html and the protocol extensions are documented in the PROTOCOL and PROTOCOL.agent files in the source release. * ssh(1), sshd(8): add the sntrup761x25519-sha512@openssh.com hybrid ECDH/x25519 + Streamlined NTRU Prime post-quantum KEX to the default KEXAlgorithms list (after the ECDH methods but before the prime-group DH ones). The next release of OpenSSH is likely to make this key exchange the default method. * ssh-keygen(1): when downloading resident keys from a FIDO token, pass back the user ID that was used when the key was created and append it to the filename the key is written to (if it is not the default). Avoids keys being clobbered if the user created multiple resident keys with the same application string but different user IDs. * ssh-keygen(1), ssh(1), ssh-agent(1): better handling for FIDO keys on tokens that provide user verification (UV) on the device itself, including biometric keys, avoiding unnecessary PIN prompts. * ssh-keygen(1): add "ssh-keygen -Y match-principals" operation to perform matching of principals names against an allowed signers file. To be used towards a TOFU model for SSH signatures in git. * ssh-add(1), ssh-agent(1): allow pin-required FIDO keys to be added to ssh-agent(1). $SSH_ASKPASS will be used to request the PIN at authentication time. * ssh-keygen(1): allow selection of hash at sshsig signing time (either sha512 (default) or sha256). * ssh(1), sshd(8): read network data directly to the packet input buffer instead indirectly via a small stack buffer. Provides a modest performance improvement. * ssh(1), sshd(8): read data directly to the channel input buffer, providing a similar modest performance improvement. * ssh(1): extend the PubkeyAuthentication configuration directive to accept yes|no|unbound|host-bound to allow control over one of the protocol extensions used to implement agent-restricted keys. Bugfixes -------- * sshd(8): document that CASignatureAlgorithms, ExposeAuthInfo and PubkeyAuthOptions can be used in a Match block. PR#277. * sshd(8): fix possible string truncation when constructing paths to .rhosts/.shosts files with very long user home directory names. * ssh-keysign(1): unbreak for KEX algorithms that use SHA384/512 exchange hashes * ssh(1): don't put the TTY into raw mode when SessionType=none, avoids ^C being unable to kill such a session. bz3360 * scp(1): fix some corner-case bugs in SFTP-mode handling of ~-prefixed paths. * ssh(1): unbreak hostbased auth using RSA keys. Allow ssh(1) to select RSA keys when only RSA/SHA2 signature algorithms are configured (this is the default case). Previously RSA keys were not being considered in the default case. * ssh-keysign(1): make ssh-keysign use the requested signature algorithm and not the default for the key type. Part of unbreaking hostbased auth for RSA/SHA2 keys. * ssh(1): stricter UpdateHostkey signature verification logic on the client- side. Require RSA/SHA2 signatures for RSA hostkeys except when RSA/SHA1 was explicitly negotiated during initial KEX; bz3375 * ssh(1), sshd(8): fix signature algorithm selection logic for UpdateHostkeys on the server side. The previous code tried to prefer RSA/SHA2 for hostkey proofs of RSA keys, but missed some cases. This will use RSA/SHA2 signatures for RSA keys if the client proposed these algorithms in initial KEX. bz3375 * All: convert all uses of select(2)/pselect(2) to poll(2)/ppoll(2). This includes the mainloops in ssh(1), ssh-agent(1), ssh-agent(1) and sftp-server(8), as well as the sshd(8) listen loop and all other FD read/writability checks. On platforms with missing or broken poll(2)/ppoll(2) syscalls a select(2)-based compat shim is available. * ssh-keygen(1): the "-Y find-principals" command was verifying key validity when using ca certs but not with simple key lifetimes within the allowed signers file. * ssh-keygen(1): make sshsig verify-time argument parsing optional * sshd(8): fix truncation in rhosts/shosts path construction. * ssh(1), ssh-agent(1): avoid xmalloc(0) for PKCS#11 keyid for ECDSA keys (we already did this for RSA keys). Avoids fatal errors for PKCS#11 libraries that return empty keyid, e.g. Microchip ATECC608B "cryptoauthlib"; bz#3364 * ssh(1), ssh-agent(1): improve the testing of credentials against inserted FIDO: ask the token whether a particular key belongs to it in cases where the token supports on-token user-verification (e.g. biometrics) rather than just assuming that it will accept it. Will reduce spurious "Confirm user presence" notifications for key handles that relate to FIDO keys that are not currently inserted in at least some cases. bz3366 * ssh(1), sshd(8): correct value for IPTOS_DSCP_LE. It needs to allow for the preceding two ECN bits. bz#3373 * ssh-keygen(1): add missing -O option to usage() for the "-Y sign" option. * ssh-keygen(1): fix a NULL deref when using the find-principals function, when matching an allowed_signers line that contains a namespace restriction, but no restriction specified on the command-line * ssh-agent(1): fix memleak in process_extension(); oss-fuzz issue #42719 * ssh(1): suppress "Connection to xxx closed" messages when LogLevel is set to "error" or above. bz3378 * ssh(1), sshd(8): use correct zlib flags when inflate(3)-ing compressed packet data. bz3372 * scp(1): when recursively transferring files in SFTP mode, create the destination directory if it doesn't already exist to match scp(1) in legacy RCP mode behaviour. * scp(1): many improvements in error message consistency between scp(1) in SFTP mode vs legacy RCP mode. * sshd(8): fix potential race in SIGTERM handling PR#289 * ssh(1), ssh(8): since DSA keys are deprecated, move them to the end of the default list of public keys so that they will be tried last. PR#295 * ssh-keygen(1): allow 'ssh-keygen -Y find-principals' to match wildcard principals in allowed_signers files Portability ----------- * ssh(1), sshd(8): don't trust closefrom(2) on Linux. glibc's implementation does not work in a chroot when the kernel does not have close_range(2). It tries to read from /proc/self/fd and when that fails dies with an assertion of sorts. Instead, call close_range(2) directly from our compat code and fall back if that fails. bz#3349, * OS X poll(2) is broken; use compat replacement. For character- special devices like /dev/null, Darwin's poll(2) returns POLLNVAL when polled with POLLIN. Apparently this is Apple bug 3710161 - not public but a websearch will find other OSS projects rediscovering it periodically since it was first identified in 2005. * Correct handling of exceptfds/POLLPRI in our select(2)-based poll(2)/ppoll(2) compat implementation. * Cygwin: correct checking of mbstowcs() return value. * Add a basic SECURITY.md that refers people to the openssh.com website. * Enable additional compiler warnings and toolchain hardening flags, including -Wbitwise-instead-of-logical, -Wmisleading-indentation, -fzero-call-used-regs and -ftrivial-auto-var-init. * HP/UX. Use compat getline(3) on HP-UX 10.x, where the libc version is not reliable.
merge local changes between openssh 8.4 and 8.5
OpenSSH 8.5/8.5p1 (2021-03-03)
OpenSSH 8.5 was released on 2021-03-03. It is available from the
mirrors listed at https://www.openssh.com/.
OpenSSH is a 100% complete SSH protocol 2.0 implementation and
includes sftp client and server support.
Once again, we would like to thank the OpenSSH community for their
continued support of the project, especially those who contributed
code or patches, reported bugs, tested snapshots or donated to the
project. More information on donations may be found at:
https://www.openssh.com/donations.html
Future deprecation notice
=========================
It is now possible[1] to perform chosen-prefix attacks against the
SHA-1 algorithm for less than USD$50K.
In the SSH protocol, the "ssh-rsa" signature scheme uses the SHA-1
hash algorithm in conjunction with the RSA public key algorithm.
OpenSSH will disable this signature scheme by default in the near
future.
Note that the deactivation of "ssh-rsa" signatures does not necessarily
require cessation of use for RSA keys. In the SSH protocol, keys may be
capable of signing using multiple algorithms. In particular, "ssh-rsa"
keys are capable of signing using "rsa-sha2-256" (RSA/SHA256),
"rsa-sha2-512" (RSA/SHA512) and "ssh-rsa" (RSA/SHA1). Only the last of
these is being turned off by default.
This algorithm is unfortunately still used widely despite the
existence of better alternatives, being the only remaining public key
signature algorithm specified by the original SSH RFCs that is still
enabled by default.
The better alternatives include:
* The RFC8332 RSA SHA-2 signature algorithms rsa-sha2-256/512. These
algorithms have the advantage of using the same key type as
"ssh-rsa" but use the safe SHA-2 hash algorithms. These have been
supported since OpenSSH 7.2 and are already used by default if the
client and server support them.
* The RFC8709 ssh-ed25519 signature algorithm. It has been supported
in OpenSSH since release 6.5.
* The RFC5656 ECDSA algorithms: ecdsa-sha2-nistp256/384/521. These
have been supported by OpenSSH since release 5.7.
To check whether a server is using the weak ssh-rsa public key
algorithm, for host authentication, try to connect to it after
removing the ssh-rsa algorithm from ssh(1)'s allowed list:
ssh -oHostKeyAlgorithms=-ssh-rsa user@host
If the host key verification fails and no other supported host key
types are available, the server software on that host should be
upgraded.
This release enables the UpdateHostKeys option by default to assist
the client by automatically migrating to better algorithms.
[1] "SHA-1 is a Shambles: First Chosen-Prefix Collision on SHA-1 and
Application to the PGP Web of Trust" Leurent, G and Peyrin, T
(2020) https://eprint.iacr.org/2020/014.pdf
Security
========
* ssh-agent(1): fixed a double-free memory corruption that was
introduced in OpenSSH 8.2 . We treat all such memory faults as
potentially exploitable. This bug could be reached by an attacker
with access to the agent socket.
On modern operating systems where the OS can provide information
about the user identity connected to a socket, OpenSSH ssh-agent
and sshd limit agent socket access only to the originating user
and root. Additional mitigation may be afforded by the system's
malloc(3)/free(3) implementation, if it detects double-free
conditions.
The most likely scenario for exploitation is a user forwarding an
agent either to an account shared with a malicious user or to a
host with an attacker holding root access.
* Portable sshd(8): Prevent excessively long username going to PAM.
This is a mitigation for a buffer overflow in Solaris' PAM username
handling (CVE-2020-14871), and is only enabled for Sun-derived PAM
implementations. This is not a problem in sshd itself, it only
prevents sshd from being used as a vector to attack Solaris' PAM.
It does not prevent the bug in PAM from being exploited via some
other PAM application. GHPR212
Potentially-incompatible changes
================================
This release includes a number of changes that may affect existing
configurations:
* ssh(1), sshd(8): this release changes the first-preference signature
algorithm from ECDSA to ED25519.
* ssh(1), sshd(8): set the TOS/DSCP specified in the configuration
for interactive use prior to TCP connect. The connection phase of
the SSH session is time-sensitive and often explicitly interactive.
The ultimate interactive/bulk TOS/DSCP will be set after
authentication completes.
* ssh(1), sshd(8): remove the pre-standardization cipher
rijndael-cbc@lysator.liu.se. It is an alias for aes256-cbc before
it was standardized in RFC4253 (2006), has been deprecated and
disabled by default since OpenSSH 7.2 (2016) and was only briefly
documented in ssh.1 in 2001.
* ssh(1), sshd(8): update/replace the experimental post-quantum
hybrid key exchange method based on Streamlined NTRU Prime coupled
with X25519.
The previous sntrup4591761x25519-sha512@tinyssh.org method is
replaced with sntrup761x25519-sha512@openssh.com. Per its
designers, the sntrup4591761 algorithm was superseded almost two
years ago by sntrup761.
(note this both the updated method and the one that it replaced are
disabled by default)
* ssh(1): disable CheckHostIP by default. It provides insignificant
benefits while making key rotation significantly more difficult,
especially for hosts behind IP-based load-balancers.
Changes since OpenSSH 8.4
=========================
New features
------------
* ssh(1): this release enables UpdateHostkeys by default subject to
some conservative preconditions:
- The key was matched in the UserKnownHostsFile (and not in the
GlobalKnownHostsFile).
- The same key does not exist under another name.
- A certificate host key is not in use.
- known_hosts contains no matching wildcard hostname pattern.
- VerifyHostKeyDNS is not enabled.
- The default UserKnownHostsFile is in use.
We expect some of these conditions will be modified or relaxed in
future.
* ssh(1), sshd(8): add a new LogVerbose configuration directive for
that allows forcing maximum debug logging by file/function/line
pattern-lists.
* ssh(1): when prompting the user to accept a new hostkey, display
any other host names/addresses already associated with the key.
* ssh(1): allow UserKnownHostsFile=none to indicate that no
known_hosts file should be used to identify host keys.
* ssh(1): add a ssh_config KnownHostsCommand option that allows the
client to obtain known_hosts data from a command in addition to
the usual files.
* ssh(1): add a ssh_config PermitRemoteOpen option that allows the
client to restrict the destination when RemoteForward is used
with SOCKS.
* ssh(1): for FIDO keys, if a signature operation fails with a
"incorrect PIN" reason and no PIN was initially requested from the
user, then request a PIN and retry the operation. This supports
some biometric devices that fall back to requiring PIN when reading
of the biometric failed, and devices that require PINs for all
hosted credentials.
* sshd(8): implement client address-based rate-limiting via new
sshd_config(5) PerSourceMaxStartups and PerSourceNetBlockSize
directives that provide more fine-grained control on a per-origin
address basis than the global MaxStartups limit.
Bugfixes
--------
* ssh(1): Prefix keyboard interactive prompts with "(user@host)" to
make it easier to determine which connection they are associated
with in cases like scp -3, ProxyJump, etc. bz#3224
* sshd(8): fix sshd_config SetEnv directives located inside Match
blocks. GHPR201
* ssh(1): when requesting a FIDO token touch on stderr, inform the
user once the touch has been recorded.
* ssh(1): prevent integer overflow when ridiculously large
ConnectTimeout values are specified, capping the effective value
(for most platforms) at 24 days. bz#3229
* ssh(1): consider the ECDSA key subtype when ordering host key
algorithms in the client.
* ssh(1), sshd(8): rename the PubkeyAcceptedKeyTypes keyword to
PubkeyAcceptedAlgorithms. The previous name incorrectly suggested
that it control allowed key algorithms, when this option actually
specifies the signature algorithms that are accepted. The previous
name remains available as an alias. bz#3253
* ssh(1), sshd(8): similarly, rename HostbasedKeyTypes (ssh) and
HostbasedAcceptedKeyTypes (sshd) to HostbasedAcceptedAlgorithms.
* sftp-server(8): add missing lsetstat@openssh.com documentation
and advertisement in the server's SSH2_FXP_VERSION hello packet.
* ssh(1), sshd(8): more strictly enforce KEX state-machine by
banning packet types once they are received. Fixes memleak caused
by duplicate SSH2_MSG_KEX_DH_GEX_REQUEST (oss-fuzz #30078).
* sftp(1): allow the full range of UIDs/GIDs for chown/chgrp on 32bit
platforms instead of being limited by LONG_MAX. bz#3206
* Minor man page fixes (capitalization, commas, etc.) bz#3223
* sftp(1): when doing an sftp recursive upload or download of a
read-only directory, ensure that the directory is created with
write and execute permissions in the interim so that the transfer
can actually complete, then set the directory permission as the
final step. bz#3222
* ssh-keygen(1): document the -Z, check the validity of its argument
earlier and provide a better error message if it's not correct.
bz#2879
* ssh(1): ignore comments at the end of config lines in ssh_config,
similar to what we already do for sshd_config. bz#2320
* sshd_config(5): mention that DisableForwarding is valid in a
sshd_config Match block. bz3239
* sftp(1): fix incorrect sorting of "ls -ltr" under some
circumstances. bz3248.
* ssh(1), sshd(8): fix potential integer truncation of (unlikely)
timeout values. bz#3250
* ssh(1): make hostbased authentication send the signature algorithm
in its SSH2_MSG_USERAUTH_REQUEST packets instead of the key type.
This make HostbasedAcceptedAlgorithms do what it is supposed to -
filter on signature algorithm and not key type.
Portability
-----------
* sshd(8): add a number of platform-specific syscalls to the Linux
seccomp-bpf sandbox. bz#3232 bz#3260
* sshd(8): remove debug message from sigchld handler that could cause
deadlock on some platforms. bz#3259
* Sync contrib/ssh-copy-id with upstream.
* unittests: add a hostname function for systems that don't have it.
Some systems don't have a hostname command (it's not required by
POSIX). The do have uname -n (which is), but not all of those have
it report the FQDN.
Checksums:
==========
- SHA1 (openssh-8.5.tar.gz) = 04cae43c389fb411227c01219e4eb46e3113f34e
- SHA256 (openssh-8.5.tar.gz) = 5qB2CgzNG4io4DmChTjHgCWqRWvEOvCKJskLdJCz+SU=
- SHA1 (openssh-8.5p1.tar.gz) = 72eadcbe313b07b1dd3b693e41d3cd56d354e24e
- SHA256 (openssh-8.5p1.tar.gz) = 9S8/QdQpqpkY44zyAK8iXM3Y5m8FLaVyhwyJc3ZG7CU=
Please note that the SHA256 signatures are base64 encoded and not
hexadecimal (which is the default for most checksum tools). The PGP
key used to sign the releases is available from the mirror sites:
https://cdn.openbsd.org/pub/OpenBSD/OpenSSH/RELEASE_KEY.asc
Please note that the OpenPGP key used to sign releases has been
rotated for this release. The new key has been signed by the previous
key to provide continuity.
Reporting Bugs:
===============
- Please read https://www.openssh.com/report.html
Security bugs should be reported directly to openssh@openssh.com
Merge conflicts
OpenSSH 8.3 was released on 2020-05-27. It is available from the
mirrors listed at https://www.openssh.com/.
OpenSSH is a 100% complete SSH protocol 2.0 implementation and
includes sftp client and server support.
Once again, we would like to thank the OpenSSH community for their
continued support of the project, especially those who contributed
code or patches, reported bugs, tested snapshots or donated to the
project. More information on donations may be found at:
https://www.openssh.com/donations.html
Future deprecation notice
=========================
It is now possible[1] to perform chosen-prefix attacks against the
SHA-1 algorithm for less than USD$50K. For this reason, we will be
disabling the "ssh-rsa" public key signature algorithm by default in a
near-future release.
This algorithm is unfortunately still used widely despite the
existence of better alternatives, being the only remaining public key
signature algorithm specified by the original SSH RFCs.
The better alternatives include:
* The RFC8332 RSA SHA-2 signature algorithms rsa-sha2-256/512. These
algorithms have the advantage of using the same key type as
"ssh-rsa" but use the safe SHA-2 hash algorithms. These have been
supported since OpenSSH 7.2 and are already used by default if the
client and server support them.
* The ssh-ed25519 signature algorithm. It has been supported in
OpenSSH since release 6.5.
* The RFC5656 ECDSA algorithms: ecdsa-sha2-nistp256/384/521. These
have been supported by OpenSSH since release 5.7.
To check whether a server is using the weak ssh-rsa public key
algorithm, for host authentication, try to connect to it after
removing the ssh-rsa algorithm from ssh(1)'s allowed list:
ssh -oHostKeyAlgorithms=-ssh-rsa user@host
If the host key verification fails and no other supported host key
types are available, the server software on that host should be
upgraded.
A future release of OpenSSH will enable UpdateHostKeys by default
to allow the client to automatically migrate to better algorithms.
Users may consider enabling this option manually. Vendors of devices
that implement the SSH protocol should ensure that they support the
new signature algorithms for RSA keys.
[1] "SHA-1 is a Shambles: First Chosen-Prefix Collision on SHA-1 and
Application to the PGP Web of Trust" Leurent, G and Peyrin, T
(2020) https://eprint.iacr.org/2020/014.pdf
Security
========
* scp(1): when receiving files, scp(1) could be become desynchronised
if a utimes(2) system call failed. This could allow file contents
to be interpreted as file metadata and thereby permit an adversary
to craft a file system that, when copied with scp(1) in a
configuration that caused utimes(2) to fail (e.g. under a SELinux
policy or syscall sandbox), transferred different file names and
contents to the actual file system layout.
Exploitation of this is not likely as utimes(2) does not fail under
normal circumstances. Successful exploitation is not silent - the
output of scp(1) would show transfer errors followed by the actual
file(s) that were received.
Finally, filenames returned from the peer are (since openssh-8.0)
matched against the user's requested destination, thereby
disallowing a successful exploit from writing files outside the
user's selected target glob (or directory, in the case of a
recursive transfer). This ensures that this attack can achieve no
more than a hostile peer is already able to achieve within the scp
protocol.
Potentially-incompatible changes
================================
This release includes a number of changes that may affect existing
configurations:
* sftp(1): reject an argument of "-1" in the same way as ssh(1) and
scp(1) do instead of accepting and silently ignoring it.
Changes since OpenSSH 8.2
=========================
The focus of this release is bug fixing.
New Features
------------
* sshd(8): make IgnoreRhosts a tri-state option: "yes" to ignore
rhosts/shosts, "no" allow rhosts/shosts or (new) "shosts-only"
to allow .shosts files but not .rhosts.
* sshd(8): allow the IgnoreRhosts directive to appear anywhere in a
sshd_config, not just before any Match blocks; bz3148
* ssh(1): add %TOKEN percent expansion for the LocalFoward and
RemoteForward keywords when used for Unix domain socket forwarding.
bz#3014
* all: allow loading public keys from the unencrypted envelope of a
private key file if no corresponding public key file is present.
* ssh(1), sshd(8): prefer to use chacha20 from libcrypto where
possible instead of the (slower) portable C implementation included
in OpenSSH.
* ssh-keygen(1): add ability to dump the contents of a binary key
revocation list via "ssh-keygen -lQf /path" bz#3132
Bugfixes
--------
* ssh(1): fix IdentitiesOnly=yes to also apply to keys loaded from
a PKCS11Provider; bz#3141
* ssh-keygen(1): avoid NULL dereference when trying to convert an
invalid RFC4716 private key.
* scp(1): when performing remote-to-remote copies using "scp -3",
start the second ssh(1) channel with BatchMode=yes enabled to
avoid confusing and non-deterministic ordering of prompts.
* ssh(1), ssh-keygen(1): when signing a challenge using a FIDO token,
perform hashing of the message to be signed in the middleware layer
rather than in OpenSSH code. This permits the use of security key
middlewares that perform the hashing implicitly, such as Windows
Hello.
* ssh(1): fix incorrect error message for "too many known hosts
files." bz#3149
* ssh(1): make failures when establishing "Tunnel" forwarding
terminate the connection when ExitOnForwardFailure is enabled;
bz#3116
* ssh-keygen(1): fix printing of fingerprints on private keys and add
a regression test for same.
* sshd(8): document order of checking AuthorizedKeysFile (first) and
AuthorizedKeysCommand (subsequently, if the file doesn't match);
bz#3134
* sshd(8): document that /etc/hosts.equiv and /etc/shosts.equiv are
not considered for HostbasedAuthentication when the target user is
root; bz#3148
* ssh(1), ssh-keygen(1): fix NULL dereference in private certificate
key parsing (oss-fuzz #20074).
* ssh(1), sshd(8): more consistency between sets of %TOKENS are
accepted in various configuration options.
* ssh(1), ssh-keygen(1): improve error messages for some common
PKCS#11 C_Login failure cases; bz#3130
* ssh(1), sshd(8): make error messages for problems during SSH banner
exchange consistent with other SSH transport-layer error messages
and ensure they include the relevant IP addresses bz#3129
* various: fix a number of spelling errors in comments and debug/error
messages
* ssh-keygen(1), ssh-add(1): when downloading FIDO2 resident keys
from a token, don't prompt for a PIN until the token has told us
that it needs one. Avoids double-prompting on devices that
implement on-device authentication.
* sshd(8), ssh-keygen(1): no-touch-required FIDO certificate option
should be an extension, not a critical option.
* ssh(1), ssh-keygen(1), ssh-add(1): offer a better error message
when trying to use a FIDO key function and SecurityKeyProvider is
empty.
* ssh-add(1), ssh-agent(8): ensure that a key lifetime fits within
the values allowed by the wire format (u32). Prevents integer
wraparound of the timeout values. bz#3119
* ssh(1): detect and prevent trivial configuration loops when using
ProxyJump. bz#3057.
Portability
-----------
* Detect systems where signals flagged with SA_RESTART will interrupt
select(2). POSIX permits implementations to choose whether
select(2) will return when interrupted with a SA_RESTART-flagged
signal, but OpenSSH requires interrupting behaviour.
* Several compilation fixes for HP/UX and AIX.
* On platforms that do not support setting process-wide routing
domains (all excepting OpenBSD at present), fail to accept a
configuration attempts to set one at process start time rather than
fatally erroring at run time. bz#3126
* Improve detection of egrep (used in regression tests) on platforms
that offer a poor default one (e.g. Solaris).
* A number of shell portability fixes for the regression tests.
* Fix theoretical infinite loop in the glob(3) replacement
implementation.
* Fix seccomp sandbox compilation problems for some Linux
configurations bz#3085
* Improved detection of libfido2 and some compilation fixes for some
configurations when --with-security-key-builtin is selected.
Mostly merge changes from HEAD upto 20200411
merge openssh-8.1
OpenSSH 8.1 was released on 2019-10-09. It is available from the mirrors listed at https://www.openssh.com/. OpenSSH is a 100% complete SSH protocol 2.0 implementation and includes sftp client and server support. Once again, we would like to thank the OpenSSH community for their continued support of the project, especially those who contributed code or patches, reported bugs, tested snapshots or donated to the project. More information on donations may be found at: http://www.openssh.com/donations.html Security ======== * ssh(1), sshd(8), ssh-add(1), ssh-keygen(1): an exploitable integer overflow bug was found in the private key parsing code for the XMSS key type. This key type is still experimental and support for it is not compiled by default. No user-facing autoconf option exists in portable OpenSSH to enable it. This bug was found by Adam Zabrocki and reported via SecuriTeam's SSD program. * ssh(1), sshd(8), ssh-agent(1): add protection for private keys at rest in RAM against speculation and memory side-channel attacks like Spectre, Meltdown and Rambleed. This release encrypts private keys when they are not in use with a symmetric key that is derived from a relatively large "prekey" consisting of random data (currently 16KB). Potentially-incompatible changes ================================ This release includes a number of changes that may affect existing configurations: * ssh-keygen(1): when acting as a CA and signing certificates with an RSA key, default to using the rsa-sha2-512 signature algorithm. Certificates signed by RSA keys will therefore be incompatible with OpenSSH versions prior to 7.2 unless the default is overridden (using "ssh-keygen -t ssh-rsa -s ...").
Sync with HEAD
Merge the [pgoyette-compat] branch
Sync with HEAD Resolve a couple of conflicts (result of the uimin/uimax changes)
merge conflicts
Potentially-incompatible changes ================================ This release includes a number of changes that may affect existing configurations: * ssh-keygen(1): write OpenSSH format private keys by default instead of using OpenSSL's PEM format. The OpenSSH format, supported in OpenSSH releases since 2014 and described in the PROTOCOL.key file in the source distribution, offers substantially better protection against offline password guessing and supports key comments in private keys. If necessary, it is possible to write old PEM-style keys by adding "-m PEM" to ssh-keygen's arguments when generating or updating a key. * sshd(8): remove internal support for S/Key multiple factor authentication. S/Key may still be used via PAM or BSD auth. * ssh(1): remove vestigal support for running ssh(1) as setuid. This used to be required for hostbased authentication and the (long gone) rhosts-style authentication, but has not been necessary for a long time. Attempting to execute ssh as a setuid binary, or with uid != effective uid will now yield a fatal error at runtime. * sshd(8): the semantics of PubkeyAcceptedKeyTypes and the similar HostbasedAcceptedKeyTypes options have changed. These now specify signature algorithms that are accepted for their respective authentication mechanism, where previously they specified accepted key types. This distinction matters when using the RSA/SHA2 signature algorithms "rsa-sha2-256", "rsa-sha2-512" and their certificate counterparts. Configurations that override these options but omit these algorithm names may cause unexpected authentication failures (no action is required for configurations that accept the default for these options). * sshd(8): the precedence of session environment variables has changed. ~/.ssh/environment and environment="..." options in authorized_keys files can no longer override SSH_* variables set implicitly by sshd. * ssh(1)/sshd(8): the default IPQoS used by ssh/sshd has changed. They will now use DSCP AF21 for interactive traffic and CS1 for bulk. For a detailed rationale, please see the commit message: https://cvsweb.openbsd.org/src/usr.bin/ssh/readconf.c#rev1.284
Apply patch (requested by mrg in ticket #1468): Update OpenSSH to 7.5.
Apply patch (requested by mrg in ticket #1468): Update OpenSSH to 7.5.
Apply patch (requested by mrg in ticket #1468): Update OpenSSH to 7.5.
Sync with HEAD
Sync with HEAD
merge conflicts
Sync with HEAD. (Note that most of these changes are simply $NetBSD$ tag issues.)
merge conflicts
Import OpenSSH-7.4 OpenSSH 7.4 has just been released. It will be available from the mirrors listed at http://www.openssh.com/ shortly. OpenSSH is a 100% complete SSH protocol 2.0 implementation and includes sftp client and server support. OpenSSH also includes transitional support for the legacy SSH 1.3 and 1.5 protocols that may be enabled at compile-time. Once again, we would like to thank the OpenSSH community for their continued support of the project, especially those who contributed code or patches, reported bugs, tested snapshots or donated to the project. More information on donations may be found at: http://www.openssh.com/donations.html Future deprecation notice ========================= We plan on retiring more legacy cryptography in future releases, specifically: * In approximately August 2017, removing remaining support for the SSH v.1 protocol (client-only and currently compile-time disabled). * In the same release, removing support for Blowfish and RC4 ciphers and the RIPE-MD160 HMAC. (These are currently run-time disabled). * Refusing all RSA keys smaller than 1024 bits (the current minimum is 768 bits) * The next release of OpenSSH will remove support for running sshd(8) with privilege separation disabled. * The next release of portable OpenSSH will remove support for OpenSSL version prior to 1.0.1. This list reflects our current intentions, but please check the final release notes for future releases. Potentially-incompatible changes ================================ This release includes a number of changes that may affect existing configurations: * This release removes server support for the SSH v.1 protocol. * ssh(1): Remove 3des-cbc from the client's default proposal. 64-bit block ciphers are not safe in 2016 and we don't want to wait until attacks like SWEET32 are extended to SSH. As 3des-cbc was the only mandatory cipher in the SSH RFCs, this may cause problems connecting to older devices using the default configuration, but it's highly likely that such devices already need explicit configuration for key exchange and hostkey algorithms already anyway. * sshd(8): Remove support for pre-authentication compression. Doing compression early in the protocol probably seemed reasonable in the 1990s, but today it's clearly a bad idea in terms of both cryptography (cf. multiple compression oracle attacks in TLS) and attack surface. Pre-auth compression support has been disabled by default for >10 years. Support remains in the client. * ssh-agent will refuse to load PKCS#11 modules outside a whitelist of trusted paths by default. The path whitelist may be specified at run-time. * sshd(8): When a forced-command appears in both a certificate and an authorized keys/principals command= restriction, sshd will now refuse to accept the certificate unless they are identical. The previous (documented) behaviour of having the certificate forced-command override the other could be a bit confusing and error-prone. * sshd(8): Remove the UseLogin configuration directive and support for having /bin/login manage login sessions.
Sync with HEAD
merge conflicts.
OpenSSH 7.3 has just been released. It will be available from the mirrors listed at http://www.openssh.com/ shortly. OpenSSH is a 100% complete SSH protocol 2.0 implementation and includes sftp client and server support. OpenSSH also includes transitional support for the legacy SSH 1.3 and 1.5 protocols that may be enabled at compile-time. Once again, we would like to thank the OpenSSH community for their continued support of the project, especially those who contributed code or patches, reported bugs, tested snapshots or donated to the project. More information on donations may be found at: http://www.openssh.com/donations.html Future deprecation notice ========================= We plan on retiring more legacy cryptography in a near-future release, specifically: * Refusing all RSA keys smaller than 1024 bits (the current minimum is 768 bits) * Removing server-side support for the SSH v.1 protocol (currently compile-time disabled). * In approximately 1 year, removing all support for the SSH v.1 protocol (currently compile-time disabled). This list reflects our current intentions, but please check the final release notes for future releases. Changes since OpenSSH 7.2 ========================= This is primarily a bugfix release. Security -------- * sshd(8): Mitigate a potential denial-of-service attack against the system's crypt(3) function via sshd(8). An attacker could send very long passwords that would cause excessive CPU use in crypt(3). sshd(8) now refuses to accept password authentication requests of length greater than 1024 characters. Independently reported by Tomas Kuthan (Oracle), Andres Rojas and Javier Nieto. * sshd(8): Mitigate timing differences in password authentication that could be used to discern valid from invalid account names when long passwords were sent and particular password hashing algorithms are in use on the server. CVE-2016-6210, reported by EddieEzra.Harari at verint.com * ssh(1), sshd(8): Fix observable timing weakness in the CBC padding oracle countermeasures. Reported by Jean Paul Degabriele, Kenny Paterson, Torben Hansen and Martin Albrecht. Note that CBC ciphers are disabled by default and only included for legacy compatibility. * ssh(1), sshd(8): Improve operation ordering of MAC verification for Encrypt-then-MAC (EtM) mode transport MAC algorithms to verify the MAC before decrypting any ciphertext. This removes the possibility of timing differences leaking facts about the plaintext, though no such leakage has been observed. Reported by Jean Paul Degabriele, Kenny Paterson, Torben Hansen and Martin Albrecht. * sshd(8): (portable only) Ignore PAM environment vars when UseLogin=yes. If PAM is configured to read user-specified environment variables and UseLogin=yes in sshd_config, then a hostile local user may attack /bin/login via LD_PRELOAD or similar environment variables set via PAM. CVE-2015-8325, found by Shayan Sadigh. New Features ------------ * ssh(1): Add a ProxyJump option and corresponding -J command-line flag to allow simplified indirection through a one or more SSH bastions or "jump hosts". * ssh(1): Add an IdentityAgent option to allow specifying specific agent sockets instead of accepting one from the environment. * ssh(1): Allow ExitOnForwardFailure and ClearAllForwardings to be optionally overridden when using ssh -W. bz#2577 * ssh(1), sshd(8): Implement support for the IUTF8 terminal mode as per draft-sgtatham-secsh-iutf8-00. * ssh(1), sshd(8): Add support for additional fixed Diffie-Hellman 2K, 4K and 8K groups from draft-ietf-curdle-ssh-kex-sha2-03. * ssh-keygen(1), ssh(1), sshd(8): support SHA256 and SHA512 RSA signatures in certificates; * ssh(1): Add an Include directive for ssh_config(5) files. * ssh(1): Permit UTF-8 characters in pre-authentication banners sent from the server. bz#2058 Bugfixes -------- * ssh(1), sshd(8): Reduce the syslog level of some relatively common protocol events from LOG_CRIT. bz#2585 * sshd(8): Refuse AuthenticationMethods="" in configurations and accept AuthenticationMethods=any for the default behaviour of not requiring multiple authentication. bz#2398 * sshd(8): Remove obsolete and misleading "POSSIBLE BREAK-IN ATTEMPT!" message when forward and reverse DNS don't match. bz#2585 * ssh(1): Close ControlPersist background process stderr except in debug mode or when logging to syslog. bz#1988 * misc: Make PROTOCOL description for direct-streamlocal@openssh.com channel open messages match deployed code. bz#2529 * ssh(1): Deduplicate LocalForward and RemoteForward entries to fix failures when both ExitOnForwardFailure and hostname canonicalisation are enabled. bz#2562 * sshd(8): Remove fallback from moduli to obsolete "primes" file that was deprecated in 2001. bz#2559. * sshd_config(5): Correct description of UseDNS: it affects ssh hostname processing for authorized_keys, not known_hosts; bz#2554 * ssh(1): Fix authentication using lone certificate keys in an agent without corresponding private keys on the filesystem. bz#2550 * sshd(8): Send ClientAliveInterval pings when a time-based RekeyLimit is set; previously keepalive packets were not being sent. bz#2252 Portability ----------- * ssh(1), sshd(8): Fix compilation by automatically disabling ciphers not supported by OpenSSL. bz#2466 * misc: Fix compilation failures on some versions of AIX's compiler related to the definition of the VA_COPY macro. bz#2589 * sshd(8): Whitelist more architectures to enable the seccomp-bpf sandbox. bz#2590 * ssh-agent(1), sftp-server(8): Disable process tracing on Solaris using setpflags(__PROC_PROTECT, ...). bz#2584 * sshd(8): On Solaris, don't call Solaris setproject() with UsePAM=yes it's PAM's responsibility. bz#2425 Checksums: ========== - SHA1 (openssh-7.3.tar.gz) = b1641e5265d9ec68a9a19decc3a7edd1203cbd33 - SHA256 (openssh-7.3.tar.gz) = vS0X35qrX9OOPBkyDMYhOje/DBwHBVEV7nv5rkzw4vM= - SHA1 (openssh-7.3p1.tar.gz) = bfade84283fcba885e2084343ab19a08c7d123a5 - SHA256 (openssh-7.3p1.tar.gz) = P/uYmm3KppWUw7VQ1IVaWi4XGMzd5/XjY4e0JCIPvsw= Please note that the SHA256 signatures are base64 encoded and not hexadecimal (which is the default for most checksum tools). The PGP key used to sign the releases is available as RELEASE_KEY.asc from the mirror sites. Reporting Bugs: =============== - Please read http://www.openssh.com/report.html Security bugs should be reported directly to openssh@openssh.com OpenSSH is brought to you by Markus Friedl, Niels Provos, Theo de Raadt, Kevin Steves, Damien Miller, Darren Tucker, Jason McIntyre, Tim Rice and Ben Lindstrom.
Pull up blacklistd(8), requested by christos in ticket #711: crypto/external/bsd/openssh/dist/moduli-gen/Makefile up to 1.1.1.1 crypto/external/bsd/openssh/dist/moduli-gen/moduli up to 1.1.1.1 crypto/external/bsd/openssh/dist/moduli-gen/moduli-gen.sh up to 1.1.1.1 crypto/external/bsd/openssh/dist/moduli-gen/moduli.1024 up to 1.1.1.1 crypto/external/bsd/openssh/dist/moduli-gen/moduli.1536 up to 1.1.1.1 crypto/external/bsd/openssh/dist/moduli-gen/moduli.2048 up to 1.1.1.1 crypto/external/bsd/openssh/dist/moduli-gen/moduli.3072 up to 1.1.1.1 crypto/external/bsd/openssh/dist/moduli-gen/moduli.4096 up to 1.1.1.1 crypto/external/bsd/openssh/dist/moduli-gen/moduli.6144 up to 1.1.1.1 crypto/external/bsd/openssh/dist/moduli-gen/moduli.7680 up to 1.1.1.1 crypto/external/bsd/openssh/dist/moduli-gen/moduli.8192 up to 1.1.1.1 crypto/external/bsd/openssh/dist/bcrypt_pbkdf.c up to 1.2 crypto/external/bsd/openssh/dist/kexc25519.c up to 1.3 crypto/external/bsd/openssh/dist/smult_curve25519_ref.c up to 1.3 crypto/external/bsd/openssh/dist/bitmap.c up to 1.2 plus patch crypto/external/bsd/openssh/dist/PROTOCOL.chacha20poly1305 up to 1.1.1.1 crypto/external/bsd/openssh/dist/PROTOCOL.key up to 1.1.1.1 crypto/external/bsd/openssh/dist/blf.h up to 1.1 crypto/external/bsd/openssh/dist/blocks.c up to 1.3 crypto/external/bsd/openssh/dist/blowfish.c up to 1.2 crypto/external/bsd/openssh/dist/chacha.c up to 1.3 crypto/external/bsd/openssh/dist/chacha.h up to 1.1.1.1 crypto/external/bsd/openssh/dist/cipher-aesctr.c up to 1.1.1.2 crypto/external/bsd/openssh/dist/cipher-aesctr.h up to 1.1.1.1 crypto/external/bsd/openssh/dist/cipher-chachapoly.c up to 1.3 crypto/external/bsd/openssh/dist/cipher-chachapoly.h up to 1.1.1.1 crypto/external/bsd/openssh/dist/crypto_api.h up to 1.1.1.1 crypto/external/bsd/openssh/dist/digest-libc.c up to 1.3 crypto/external/bsd/openssh/dist/digest-openssl.c up to 1.3 crypto/external/bsd/openssh/dist/digest.h up to 1.1.1.2 crypto/external/bsd/openssh/dist/ed25519.c up to 1.3 crypto/external/bsd/openssh/dist/fe25519.c up to 1.3 crypto/external/bsd/openssh/dist/fe25519.h up to 1.1.1.1 crypto/external/bsd/openssh/dist/ge25519.c up to 1.3 crypto/external/bsd/openssh/dist/ge25519.h up to 1.1.1.2 crypto/external/bsd/openssh/dist/ge25519_base.data up to 1.1.1.1 crypto/external/bsd/openssh/dist/hash.c up to 1.3 crypto/external/bsd/openssh/dist/hmac.c up to 1.3 crypto/external/bsd/openssh/dist/hmac.h up to 1.1.1.1 crypto/external/bsd/openssh/dist/kexc25519c.c up to 1.3 crypto/external/bsd/openssh/dist/kexc25519s.c up to 1.3 crypto/external/bsd/openssh/dist/poly1305.c up to 1.3 crypto/external/bsd/openssh/dist/poly1305.h up to 1.1.1.1 crypto/external/bsd/openssh/dist/rijndael.c up to 1.1.1.2 crypto/external/bsd/openssh/dist/rijndael.h up to 1.1.1.1 crypto/external/bsd/openssh/dist/sc25519.c up to 1.3 crypto/external/bsd/openssh/dist/sc25519.h up to 1.1.1.1 crypto/external/bsd/openssh/dist/ssh-ed25519.c up to 1.3 crypto/external/bsd/openssh/dist/sshbuf-getput-basic.c up to 1.3 crypto/external/bsd/openssh/dist/sshbuf-getput-crypto.c up to 1.3 crypto/external/bsd/openssh/dist/sshbuf-misc.c up to 1.3 crypto/external/bsd/openssh/dist/sshbuf.c up to 1.3 crypto/external/bsd/openssh/dist/sshbuf.h up to 1.4 crypto/external/bsd/openssh/dist/ssherr.c up to 1.3 crypto/external/bsd/openssh/dist/ssherr.h up to 1.1.1.2 crypto/external/bsd/openssh/dist/sshkey.c up to 1.3 crypto/external/bsd/openssh/dist/sshkey.h up to 1.1.1.2 crypto/external/bsd/openssh/dist/verify.c up to 1.3 crypto/external/bsd/openssh/dist/opacket.c up to 1.2 crypto/external/bsd/openssh/dist/umac128.c up to 1.1 crypto/external/bsd/openssh/dist/pfilter.c up to 1.2 crypto/external/bsd/openssh/dist/pfilter.h up to 1.1 crypto/external/bsd/openssh/dist/bitmap.h up to 1.2 crypto/external/bsd/openssh/dist/opacket.h up to 1.2 crypto/external/bsd/openssh/dist/ssh_api.c up to 1.2 crypto/external/bsd/openssh/dist/ssh_api.h up to 1.2 crypto/external/bsd/openssh/dist/auth2-jpake.c delete crypto/external/bsd/openssh/dist/compress.c delete crypto/external/bsd/openssh/dist/compress.h delete crypto/external/bsd/openssh/dist/jpake.c delete crypto/external/bsd/openssh/dist/jpake.h delete crypto/external/bsd/openssh/dist/schnorr.c delete crypto/external/bsd/openssh/dist/schnorr.h delete crypto/external/bsd/openssh/dist/strtonum.c 1.1 crypto/external/bsd/openssh/Makefile.inc up to 1.8 crypto/external/bsd/openssh/bin/Makefile.inc up to 1.3 crypto/external/bsd/openssh/bin/ssh-keyscan/Makefile up to 1.2 crypto/external/bsd/openssh/bin/sshd/Makefile up to 1.12 crypto/external/bsd/openssh/dist/PROTOCOL up to 1.5 crypto/external/bsd/openssh/dist/PROTOCOL.krl up to 1.1.1.2 crypto/external/bsd/openssh/dist/addrmatch.c up to 1.8 crypto/external/bsd/openssh/dist/atomicio.c up to 1.6 crypto/external/bsd/openssh/dist/auth-bsdauth.c up to 1.4 crypto/external/bsd/openssh/dist/auth-chall.c up to 1.6 crypto/external/bsd/openssh/dist/auth-krb5.c up to 1.7 crypto/external/bsd/openssh/dist/auth-options.c up to 1.9 crypto/external/bsd/openssh/dist/auth-options.h up to 1.6 crypto/external/bsd/openssh/dist/auth-passwd.c up to 1.4 crypto/external/bsd/openssh/dist/auth-rh-rsa.c up to 1.6 crypto/external/bsd/openssh/dist/auth-rhosts.c up to 1.5 crypto/external/bsd/openssh/dist/auth-rsa.c up to 1.10 crypto/external/bsd/openssh/dist/auth.c up to 1.12 crypto/external/bsd/openssh/dist/auth.h up to 1.10 crypto/external/bsd/openssh/dist/auth1.c up to 1.11 crypto/external/bsd/openssh/dist/auth2-chall.c up to 1.7 crypto/external/bsd/openssh/dist/auth2-gss.c up to 1.8 crypto/external/bsd/openssh/dist/auth2-hostbased.c up to 1.7 crypto/external/bsd/openssh/dist/auth2-kbdint.c up to 1.5 crypto/external/bsd/openssh/dist/auth2-krb5.c up to 1.4 crypto/external/bsd/openssh/dist/auth2-none.c up to 1.5 crypto/external/bsd/openssh/dist/auth2-passwd.c up to 1.5 crypto/external/bsd/openssh/dist/auth2-pubkey.c up to 1.11 crypto/external/bsd/openssh/dist/auth2.c up to 1.11 crypto/external/bsd/openssh/dist/authfd.c up to 1.8 crypto/external/bsd/openssh/dist/authfd.h up to 1.5 crypto/external/bsd/openssh/dist/authfile.c up to 1.10 crypto/external/bsd/openssh/dist/authfile.h up to 1.6 crypto/external/bsd/openssh/dist/bufaux.c up to 1.7 crypto/external/bsd/openssh/dist/bufbn.c up to 1.5 crypto/external/bsd/openssh/dist/bufec.c up to 1.5 crypto/external/bsd/openssh/dist/buffer.c up to 1.6 crypto/external/bsd/openssh/dist/buffer.h up to 1.7 crypto/external/bsd/openssh/dist/canohost.c up to 1.8 crypto/external/bsd/openssh/dist/channels.c up to 1.13 crypto/external/bsd/openssh/dist/channels.h up to 1.10 crypto/external/bsd/openssh/dist/cipher-3des1.c up to 1.7 crypto/external/bsd/openssh/dist/cipher-bf1.c up to 1.6 crypto/external/bsd/openssh/dist/cipher.c up to 1.7 crypto/external/bsd/openssh/dist/cipher.h up to 1.7 crypto/external/bsd/openssh/dist/clientloop.c up to 1.13 crypto/external/bsd/openssh/dist/compat.c up to 1.9 crypto/external/bsd/openssh/dist/compat.h up to 1.6 crypto/external/bsd/openssh/dist/deattack.c up to 1.4 crypto/external/bsd/openssh/dist/deattack.h up to 1.4 crypto/external/bsd/openssh/dist/dh.c up to 1.8 crypto/external/bsd/openssh/dist/dh.h up to 1.4 crypto/external/bsd/openssh/dist/dispatch.c up to 1.5 crypto/external/bsd/openssh/dist/dispatch.h up to 1.4 crypto/external/bsd/openssh/dist/dns.c up to 1.11 crypto/external/bsd/openssh/dist/dns.h up to 1.6 crypto/external/bsd/openssh/dist/groupaccess.c up to 1.5 crypto/external/bsd/openssh/dist/gss-genr.c up to 1.7 crypto/external/bsd/openssh/dist/gss-serv-krb5.c up to 1.8 crypto/external/bsd/openssh/dist/gss-serv.c up to 1.7 crypto/external/bsd/openssh/dist/hostfile.c up to 1.7 crypto/external/bsd/openssh/dist/hostfile.h up to 1.7 crypto/external/bsd/openssh/dist/includes.h up to 1.4 crypto/external/bsd/openssh/dist/kex.c up to 1.10 crypto/external/bsd/openssh/dist/kex.h up to 1.9 crypto/external/bsd/openssh/dist/kexdh.c up to 1.4 crypto/external/bsd/openssh/dist/kexdhc.c up to 1.6 crypto/external/bsd/openssh/dist/kexdhs.c up to 1.8 crypto/external/bsd/openssh/dist/kexecdh.c up to 1.5 crypto/external/bsd/openssh/dist/kexecdhc.c up to 1.5 crypto/external/bsd/openssh/dist/kexecdhs.c up to 1.5 crypto/external/bsd/openssh/dist/kexgex.c up to 1.4 crypto/external/bsd/openssh/dist/kexgexc.c up to 1.6 crypto/external/bsd/openssh/dist/kexgexs.c up to 1.8 crypto/external/bsd/openssh/dist/key.c up to 1.16 crypto/external/bsd/openssh/dist/key.h up to 1.9 crypto/external/bsd/openssh/dist/krl.c up to 1.5 crypto/external/bsd/openssh/dist/krl.h up to 1.1.1.2 crypto/external/bsd/openssh/dist/mac.c up to 1.11 crypto/external/bsd/openssh/dist/mac.h up to 1.5 crypto/external/bsd/openssh/dist/match.c up to 1.5 crypto/external/bsd/openssh/dist/misc.c up to 1.10 crypto/external/bsd/openssh/dist/misc.h up to 1.9 plus patch crypto/external/bsd/openssh/dist/moduli.c up to 1.8 crypto/external/bsd/openssh/dist/monitor.c up to 1.14 crypto/external/bsd/openssh/dist/monitor.h up to 1.7 crypto/external/bsd/openssh/dist/monitor_fdpass.c up to 1.5 crypto/external/bsd/openssh/dist/monitor_mm.c up to 1.6 crypto/external/bsd/openssh/dist/monitor_mm.h up to 1.4 crypto/external/bsd/openssh/dist/monitor_wrap.c up to 1.11 crypto/external/bsd/openssh/dist/monitor_wrap.h up to 1.8 crypto/external/bsd/openssh/dist/msg.c up to 1.4 crypto/external/bsd/openssh/dist/msg.h up to 1.4 crypto/external/bsd/openssh/dist/mux.c up to 1.11 crypto/external/bsd/openssh/dist/myproposal.h up to 1.10 crypto/external/bsd/openssh/dist/namespace.h up to 1.5 crypto/external/bsd/openssh/dist/packet.c up to 1.18 crypto/external/bsd/openssh/dist/packet.h up to 1.11 crypto/external/bsd/openssh/dist/pathnames.h up to 1.9 crypto/external/bsd/openssh/dist/pkcs11.h up to 1.4 crypto/external/bsd/openssh/dist/progressmeter.c up to 1.7 crypto/external/bsd/openssh/dist/progressmeter.h up to 1.4 crypto/external/bsd/openssh/dist/reallocarray.c new crypto/external/bsd/openssh/dist/readconf.c up to 1.13 crypto/external/bsd/openssh/dist/readconf.h up to 1.12 crypto/external/bsd/openssh/dist/readpass.c up to 1.6 crypto/external/bsd/openssh/dist/roaming_client.c up to 1.7 crypto/external/bsd/openssh/dist/roaming_common.c up to 1.9 crypto/external/bsd/openssh/dist/roaming_dummy.c up to 1.4 crypto/external/bsd/openssh/dist/rsa.c up to 1.5 crypto/external/bsd/openssh/dist/rsa.h up to 1.4 crypto/external/bsd/openssh/dist/sandbox-systrace.c up to 1.1.1.5 crypto/external/bsd/openssh/dist/scp.1 up to 1.9 crypto/external/bsd/openssh/dist/scp.c up to 1.11 crypto/external/bsd/openssh/dist/servconf.c up to 1.17 crypto/external/bsd/openssh/dist/servconf.h up to 1.11 crypto/external/bsd/openssh/dist/serverloop.c up to 1.12 crypto/external/bsd/openssh/dist/session.c up to 1.14 crypto/external/bsd/openssh/dist/session.h up to 1.4 crypto/external/bsd/openssh/dist/sftp-client.c up to 1.13 crypto/external/bsd/openssh/dist/sftp-client.h up to 1.7 crypto/external/bsd/openssh/dist/sftp-common.c up to 1.7 crypto/external/bsd/openssh/dist/sftp-common.h up to 1.5 crypto/external/bsd/openssh/dist/sftp-glob.c up to 1.8 crypto/external/bsd/openssh/dist/sftp-server.8 up to 1.9 crypto/external/bsd/openssh/dist/sftp-server.c up to 1.11 crypto/external/bsd/openssh/dist/sftp.1 up to 1.11 crypto/external/bsd/openssh/dist/sftp.c up to 1.15 crypto/external/bsd/openssh/dist/ssh-add.1 up to 1.9 crypto/external/bsd/openssh/dist/ssh-add.c up to 1.10 crypto/external/bsd/openssh/dist/ssh-agent.1 up to 1.8 crypto/external/bsd/openssh/dist/ssh-agent.c up to 1.14 crypto/external/bsd/openssh/dist/ssh-dss.c up to 1.7 crypto/external/bsd/openssh/dist/ssh-ecdsa.c up to 1.6 crypto/external/bsd/openssh/dist/ssh-gss.h up to 1.5 crypto/external/bsd/openssh/dist/ssh-keygen.1 up to 1.13 crypto/external/bsd/openssh/dist/ssh-keygen.c up to 1.16 crypto/external/bsd/openssh/dist/ssh-keyscan.1 up to 1.10 crypto/external/bsd/openssh/dist/ssh-keyscan.c up to 1.13 crypto/external/bsd/openssh/dist/ssh-keysign.8 up to 1.9 crypto/external/bsd/openssh/dist/ssh-keysign.c up to 1.8 crypto/external/bsd/openssh/dist/ssh-pkcs11-client.c up to 1.6 crypto/external/bsd/openssh/dist/ssh-pkcs11-helper.c up to 1.8 crypto/external/bsd/openssh/dist/ssh-pkcs11.c up to 1.7 crypto/external/bsd/openssh/dist/ssh-pkcs11.h up to 1.4 crypto/external/bsd/openssh/dist/ssh-rsa.c up to 1.7 crypto/external/bsd/openssh/dist/ssh.1 up to 1.14 crypto/external/bsd/openssh/dist/ssh.c up to 1.16 crypto/external/bsd/openssh/dist/ssh2.h up to 1.6 crypto/external/bsd/openssh/dist/ssh_config up to 1.8 crypto/external/bsd/openssh/dist/ssh_config.5 up to 1.13 crypto/external/bsd/openssh/dist/sshconnect.c up to 1.11 crypto/external/bsd/openssh/dist/sshconnect.h up to 1.6 crypto/external/bsd/openssh/dist/sshconnect1.c up to 1.6 crypto/external/bsd/openssh/dist/sshconnect2.c up to 1.19 crypto/external/bsd/openssh/dist/sshd.8 up to 1.13 crypto/external/bsd/openssh/dist/sshd.c up to 1.18 crypto/external/bsd/openssh/dist/sshd_config up to 1.13 crypto/external/bsd/openssh/dist/sshd_config.5 up to 1.17 crypto/external/bsd/openssh/dist/sshlogin.c up to 1.6 crypto/external/bsd/openssh/dist/sshpty.c up to 1.4 crypto/external/bsd/openssh/dist/uidswap.c up to 1.4 crypto/external/bsd/openssh/dist/umac.c up to 1.9 crypto/external/bsd/openssh/dist/version.h up to 1.14 crypto/external/bsd/openssh/dist/xmalloc.c up to 1.5 crypto/external/bsd/openssh/lib/Makefile up to 1.17 plus patch crypto/external/bsd/openssh/lib/shlib_version up to 1.13 distrib/sets/lists/base/ad.aarch64 patch distrib/sets/lists/base/ad.arm patch distrib/sets/lists/base/ad.mips patch distrib/sets/lists/base/ad.powerpc patch distrib/sets/lists/base/md.amd64 patch distrib/sets/lists/base/md.sparc64 patch distrib/sets/lists/base/mi patch distrib/sets/lists/base/shl.mi patch distrib/sets/lists/comp/ad.aarch64 patch distrib/sets/lists/comp/ad.arm patch distrib/sets/lists/comp/ad.mips patch distrib/sets/lists/comp/ad.powerpc patch distrib/sets/lists/comp/md.amd64 patch distrib/sets/lists/comp/md.sparc64 patch distrib/sets/lists/comp/mi patch distrib/sets/lists/comp/shl.mi patch distrib/sets/lists/debug/ad.aarch64 patch distrib/sets/lists/debug/ad.arm patch distrib/sets/lists/debug/ad.mips patch distrib/sets/lists/debug/ad.powerpc patch distrib/sets/lists/debug/md.amd64 patch distrib/sets/lists/debug/md.sparc64 patch distrib/sets/lists/debug/shl.mi patch distrib/sets/lists/etc/mi patch distrib/sets/lists/man/mi patch etc/defaults/rc.conf 1.130 etc/mtree/NetBSD.dist.base 1.142 external/bsd/Makefile up to 1.48 external/bsd/blacklist/bin/Makefile up to 1.11 plus patch external/bsd/blacklist/bin/blacklistctl.8 up to 1.6 external/bsd/blacklist/bin/blacklistctl.c up to 1.17 external/bsd/blacklist/bin/blacklistd.8 up to 1.10 external/bsd/blacklist/bin/blacklistd.c up to 1.32 external/bsd/blacklist/bin/blacklistd.conf.5 up to 1.2 external/bsd/blacklist/bin/conf.c up to 1.18 external/bsd/blacklist/bin/conf.h up to 1.6 external/bsd/blacklist/bin/internal.c up to 1.5 external/bsd/blacklist/bin/internal.h up to 1.12 external/bsd/blacklist/bin/run.c up to 1.12 external/bsd/blacklist/bin/run.h up to 1.5 external/bsd/blacklist/bin/state.c up to 1.15 external/bsd/blacklist/bin/state.h up to 1.5 external/bsd/blacklist/bin/support.c up to 1.6 external/bsd/blacklist/bin/support.h up to 1.5 external/bsd/blacklist/etc/rc.d/Makefile up to 1.1 external/bsd/blacklist/etc/rc.d/blacklistd up to 1.1 external/bsd/blacklist/etc/Makefile up to 1.3 external/bsd/blacklist/etc/blacklistd.conf up to 1.3 external/bsd/blacklist/etc/npf.conf up to 1.1 external/bsd/blacklist/Makefile up to 1.2 external/bsd/blacklist/Makefile.inc up to 1.3 external/bsd/blacklist/README up to 1.7 external/bsd/blacklist/TODO up to 1.7 external/bsd/blacklist/diff/ftpd.diff up to 1.1 external/bsd/blacklist/diff/named.diff up to 1.6 external/bsd/blacklist/diff/ssh.diff up to 1.6 external/bsd/blacklist/include/Makefile up to 1.1 external/bsd/blacklist/include/bl.h up to 1.12 external/bsd/blacklist/include/blacklist.h up to 1.3 external/bsd/blacklist/include/config.h new external/bsd/blacklist/lib/Makefile up to 1.3 external/bsd/blacklist/lib/bl.c up to 1.24 external/bsd/blacklist/lib/blacklist.c up to 1.5 external/bsd/blacklist/lib/libblacklist.3 up to 1.3 external/bsd/blacklist/lib/shlib_version up to 1.1 external/bsd/blacklist/libexec/Makefile up to 1.1 external/bsd/blacklist/libexec/blacklistd-helper up to 1.4 external/bsd/blacklist/port/m4/.cvsignore up to 1.1 external/bsd/blacklist/port/Makefile.am up to 1.4 external/bsd/blacklist/port/_strtoi.h up to 1.1 external/bsd/blacklist/port/clock_gettime.c up to 1.2 external/bsd/blacklist/port/configure.ac up to 1.7 external/bsd/blacklist/port/fgetln.c up to 1.1 external/bsd/blacklist/port/fparseln.c up to 1.1 external/bsd/blacklist/port/getprogname.c up to 1.4 external/bsd/blacklist/port/pidfile.c up to 1.1 external/bsd/blacklist/port/popenve.c up to 1.2 external/bsd/blacklist/port/port.h up to 1.6 external/bsd/blacklist/port/sockaddr_snprintf.c up to 1.9 external/bsd/blacklist/port/strlcat.c up to 1.2 external/bsd/blacklist/port/strlcpy.c up to 1.2 external/bsd/blacklist/port/strtoi.c up to 1.3 external/bsd/blacklist/test/Makefile up to 1.2 external/bsd/blacklist/test/cltest.c up to 1.6 external/bsd/blacklist/test/srvtest.c up to 1.9 lib/libpam/modules/pam_ssh/pam_ssh.c up to 1.23 libexec/ftpd/pfilter.c up to 1.1 libexec/ftpd/pfilter.h up to 1.1 libexec/ftpd/Makefile up to 1.64 libexec/ftpd/ftpd.c up to 1.201 Add blacklistd(8), a daemon to block and release network ports on demand to mitigate abuse, and related changes to system daemons to support it. [christos, ticket #711]
Merge conflicts
Changes since OpenSSH 6.7 ========================= This is a major release, containing a number of new features as well as a large internal re-factoring. Potentially-incompatible changes -------------------------------- * sshd(8): UseDNS now defaults to 'no'. Configurations that match against the client host name (via sshd_config or authorized_keys) may need to re-enable it or convert to matching against addresses. New Features ------------ * Much of OpenSSH's internal code has been re-factored to be more library-like. These changes are mostly not user-visible, but have greatly improved OpenSSH's testability and internal layout. * Add FingerprintHash option to ssh(1) and sshd(8), and equivalent command-line flags to the other tools to control algorithm used for key fingerprints. The default changes from MD5 to SHA256 and format from hex to base64. Fingerprints now have the hash algorithm prepended. An example of the new format: SHA256:mVPwvezndPv/ARoIadVY98vAC0g+P/5633yTC4d/wXE Please note that visual host keys will also be different. * ssh(1), sshd(8): Experimental host key rotation support. Add a protocol extension for a server to inform a client of all its available host keys after authentication has completed. The client may record the keys in known_hosts, allowing it to upgrade to better host key algorithms and a server to gracefully rotate its keys. The client side of this is controlled by a UpdateHostkeys config option (default off). * ssh(1): Add a ssh_config HostbasedKeyType option to control which host public key types are tried during host-based authentication. * ssh(1), sshd(8): fix connection-killing host key mismatch errors when sshd offers multiple ECDSA keys of different lengths. * ssh(1): when host name canonicalisation is enabled, try to parse host names as addresses before looking them up for canonicalisation. fixes bz#2074 and avoiding needless DNS lookups in some cases. * ssh-keygen(1), sshd(8): Key Revocation Lists (KRLs) no longer require OpenSSH to be compiled with OpenSSL support. * ssh(1), ssh-keysign(8): Make ed25519 keys work for host based authentication. * sshd(8): SSH protocol v.1 workaround for the Meyer, et al, Bleichenbacher Side Channel Attack. Fake up a bignum key before RSA decryption. * sshd(8): Remember which public keys have been used for authentication and refuse to accept previously-used keys. This allows AuthenticationMethods=publickey,publickey to require that users authenticate using two _different_ public keys. * sshd(8): add sshd_config HostbasedAcceptedKeyTypes and PubkeyAcceptedKeyTypes options to allow sshd to control what public key types will be accepted. Currently defaults to all. * sshd(8): Don't count partial authentication success as a failure against MaxAuthTries. * ssh(1): Add RevokedHostKeys option for the client to allow text-file or KRL-based revocation of host keys. * ssh-keygen(1), sshd(8): Permit KRLs that revoke certificates by serial number or key ID without scoping to a particular CA. * ssh(1): Add a "Match canonical" criteria that allows ssh_config Match blocks to trigger only in the second config pass. * ssh(1): Add a -G option to ssh that causes it to parse its configuration and dump the result to stdout, similar to "sshd -T". * ssh(1): Allow Match criteria to be negated. E.g. "Match !host". * The regression test suite has been extended to cover more OpenSSH features. The unit tests have been expanded and now cover key exchange. Bugfixes * ssh-keyscan(1): ssh-keyscan has been made much more robust again servers that hang or violate the SSH protocol. * ssh(1), ssh-keygen(1): Fix regression bz#2306: Key path names were being lost as comment fields. * ssh(1): Allow ssh_config Port options set in the second config parse phase to be applied (they were being ignored). bz#2286 * ssh(1): Tweak config re-parsing with host canonicalisation - make the second pass through the config files always run when host name canonicalisation is enabled (and not whenever the host name changes) bz#2267 * ssh(1): Fix passing of wildcard forward bind addresses when connection multiplexing is in use; bz#2324; * ssh-keygen(1): Fix broken private key conversion from non-OpenSSH formats; bz#2345. * ssh-keygen(1): Fix KRL generation bug when multiple CAs are in use. * Various fixes to manual pages: bz#2288, bz#2316, bz#2273 Portable OpenSSH * Support --without-openssl at configure time Disables and removes dependency on OpenSSL. Many features, including SSH protocol 1 are not supported and the set of crypto options is greatly restricted. This will only work on systems with native arc4random or /dev/urandom. Considered highly experimental for now. * Support --without-ssh1 option at configure time Allows disabling support for SSH protocol 1. * sshd(8): Fix compilation on systems with IPv6 support in utmpx; bz#2296 * Allow custom service name for sshd on Cygwin. Permits the use of multiple sshd running with different service names. Checksums: ========== - SHA1 (openssh-6.8.tar.gz) = 99903c6ca76e0a2c044711017f81127e12459d37 - SHA256 (openssh-6.8.tar.gz) = N1uzVarFbrm2CzAwuDu3sRoszmqpK+5phAChP/QNyuw= - SHA1 (openssh-6.8p1.tar.gz) = cdbc51e46a902b30d263b05fdc71340920e91c92 - SHA256 (openssh-6.8p1.tar.gz) = P/ZM5z7hJEgLW/dnuYMNfTwDu8tqvnFrePAZLDfOFg4= Please note that the PGP key used to sign releases was recently rotated. The new key has been signed by the old key to provide continuity. It is available from the mirror sites as RELEASE_KEY.asc. Reporting Bugs: =============== - Please read http://www.openssh.com/report.html Security bugs should be reported directly to openssh@openssh.com OpenSSH is brought to you by Markus Friedl, Niels Provos, Theo de Raadt, Kevin Steves, Damien Miller, Darren Tucker, Jason McIntyre, Tim Rice and Ben Lindstrom.
merge openssh-6.7
Changes since OpenSSH 6.6
=========================
Potentially-incompatible changes
* sshd(8): The default set of ciphers and MACs has been altered to
remove unsafe algorithms. In particular, CBC ciphers and arcfour*
are disabled by default.
The full set of algorithms remains available if configured
explicitly via the Ciphers and MACs sshd_config options.
* sshd(8): Support for tcpwrappers/libwrap has been removed.
* OpenSSH 6.5 and 6.6 have a bug that causes ~0.2% of connections
using the curve25519-sha256@libssh.org KEX exchange method to fail
when connecting with something that implements the specification
correctly. OpenSSH 6.7 disables this KEX method when speaking to
one of the affected versions.
New Features
* Major internal refactoring to begin to make part of OpenSSH usable
as a library. So far the wire parsing, key handling and KRL code
has been refactored. Please note that we do not consider the API
stable yet, nor do we offer the library in separable form.
* ssh(1), sshd(8): Add support for Unix domain socket forwarding.
A remote TCP port may be forwarded to a local Unix domain socket
and vice versa or both ends may be a Unix domain socket.
* ssh(1), ssh-keygen(1): Add support for SSHFP DNS records for
ED25519 key types.
* sftp(1): Allow resumption of interrupted uploads.
* ssh(1): When rekeying, skip file/DNS lookups of the hostkey if it
is the same as the one sent during initial key exchange; bz#2154
* sshd(8): Allow explicit ::1 and 127.0.0.1 forwarding bind
addresses when GatewayPorts=no; allows client to choose address
family; bz#2222
* sshd(8): Add a sshd_config PermitUserRC option to control whether
~/.ssh/rc is executed, mirroring the no-user-rc authorized_keys
option; bz#2160
* ssh(1): Add a %C escape sequence for LocalCommand and ControlPath
that expands to a unique identifer based on a hash of the tuple of
(local host, remote user, hostname, port). Helps avoid exceeding
miserly pathname limits for Unix domain sockets in multiplexing
control paths; bz#2220
* sshd(8): Make the "Too many authentication failures" message
include the user, source address, port and protocol in a format
similar to the authentication success / failure messages; bz#2199
* Added unit and fuzz tests for refactored code. These are run
automatically in portable OpenSSH via the "make tests" target.
Bugfixes
* sshd(8): Fix remote forwarding with the same listen port but
different listen address.
* ssh(1): Fix inverted test that caused PKCS#11 keys that were
explicitly listed in ssh_config or on the commandline not to be
preferred.
* ssh-keygen(1): Fix bug in KRL generation: multiple consecutive
revoked certificate serial number ranges could be serialised to an
invalid format. Readers of a broken KRL caused by this bug will
fail closed, so no should-have-been-revoked key will be accepted.
* ssh(1): Reflect stdio-forward ("ssh -W host:port ...") failures in
exit status. Previously we were always returning 0; bz#2255
* ssh(1), ssh-keygen(1): Make Ed25519 keys' title fit properly in the
randomart border; bz#2247
* ssh-agent(1): Only cleanup agent socket in the main agent process
and not in any subprocesses it may have started (e.g. forked
askpass). Fixes agent sockets being zapped when askpass processes
fatal(); bz#2236
* ssh-add(1): Make stdout line-buffered; saves partial output getting
lost when ssh-add fatal()s part-way through (e.g. when listing keys
from an agent that supports key types that ssh-add doesn't);
bz#2234
* ssh-keygen(1): When hashing or removing hosts, don't choke on
@revoked markers and don't remove @cert-authority markers; bz#2241
* ssh(1): Don't fatal when hostname canonicalisation fails and a
ProxyCommand is in use; continue and allow the ProxyCommand to
connect anyway (e.g. to a host with a name outside the DNS behind
a bastion)
* scp(1): When copying local->remote fails during read, don't send
uninitialised heap to the remote end.
* sftp(1): Fix fatal "el_insertstr failed" errors when tab-completing
filenames with a single quote char somewhere in the string;
bz#2238
* ssh-keyscan(1): Scan for Ed25519 keys by default.
* ssh(1): When using VerifyHostKeyDNS with a DNSSEC resolver, down-
convert any certificate keys to plain keys and attempt SSHFP
resolution. Prevents a server from skipping SSHFP lookup and
forcing a new-hostkey dialog by offering only certificate keys.
* sshd(8): Avoid crash at exit via NULL pointer reference; bz#2225
* Fix some strict-alignment errors.
Portable OpenSSH
* Portable OpenSSH now supports building against libressl-portable.
* Portable OpenSSH now requires openssl 0.9.8f or greater. Older
versions are no longer supported.
* In the OpenSSL version check, allow fix version upgrades (but not
downgrades. Debian bug #748150.
* sshd(8): On Cygwin, determine privilege separation user at runtime,
since it may need to be a domain account.
* sshd(8): Don't attempt to use vhangup on Linux. It doesn't work for
non-root users, and for them it just messes up the tty settings.
* Use CLOCK_BOOTTIME in preference to CLOCK_MONOTONIC when it is
available. It considers time spent suspended, thereby ensuring
timeouts (e.g. for expiring agent keys) fire correctly. bz#2228
* Add support for ed25519 to opensshd.init init script.
* sftp-server(8): On platforms that support it, use prctl() to
prevent sftp-server from accessing /proc/self/{mem,maps}
Changes since OpenSSH 6.5
=========================
This is primarily a bugfix release.
Security:
* sshd(8): when using environment passing with a sshd_config(5)
AcceptEnv pattern with a wildcard. OpenSSH prior to 6.6 could be
tricked into accepting any enviornment variable that contains the
characters before the wildcard character.
New / changed features:
* ssh(1), sshd(8): this release removes the J-PAKE authentication code.
This code was experimental, never enabled and had been unmaintained
for some time.
* ssh(1): when processing Match blocks, skip 'exec' clauses other clauses
predicates failed to match.
* ssh(1): if hostname canonicalisation is enabled and results in the
destination hostname being changed, then re-parse ssh_config(5) files
using the new destination hostname. This gives 'Host' and 'Match'
directives that use the expanded hostname a chance to be applied.
Bugfixes:
* ssh(1): avoid spurious "getsockname failed: Bad file descriptor" in
ssh -W. bz#2200, debian#738692
* sshd(8): allow the shutdown(2) syscall in seccomp-bpf and systrace
sandbox modes, as it is reachable if the connection is terminated
during the pre-auth phase.
* ssh(1), sshd(8): fix unsigned overflow that in SSH protocol 1 bignum
parsing. Minimum key length checks render this bug unexploitable to
compromise SSH 1 sessions.
* sshd_config(5): clarify behaviour of a keyword that appears in
multiple matching Match blocks. bz#2184
* ssh(1): avoid unnecessary hostname lookups when canonicalisation is
disabled. bz#2205
* sshd(8): avoid sandbox violation crashes in GSSAPI code by caching
the supported list of GSSAPI mechanism OIDs before entering the
sandbox. bz#2107
* ssh(1): fix possible crashes in SOCKS4 parsing caused by assumption
that the SOCKS username is nul-terminated.
* ssh(1): fix regression for UsePrivilegedPort=yes when BindAddress is
not specified.
* ssh(1), sshd(8): fix memory leak in ECDSA signature verification.
* ssh(1): fix matching of 'Host' directives in ssh_config(5) files
to be case-insensitive again (regression in 6.5).
Portable OpenSSH:
* sshd(8): don't fatal if the FreeBSD Capsicum is offered by the
system headers and libc but is not supported by the kernel.
* Fix build using the HP-UX compiler.
Changes since OpenSSH 6.4
=========================
This is a feature-focused release.
New features:
* ssh(1), sshd(8): Add support for key exchange using elliptic-curve
Diffie Hellman in Daniel Bernstein's Curve25519. This key exchange
method is the default when both the client and server support it.
* ssh(1), sshd(8): Add support for Ed25519 as a public key type.
Ed25519 is a elliptic curve signature scheme that offers
better security than ECDSA and DSA and good performance. It may be
used for both user and host keys.
* Add a new private key format that uses a bcrypt KDF to better
protect keys at rest. This format is used unconditionally for
Ed25519 keys, but may be requested when generating or saving
existing keys of other types via the -o ssh-keygen(1) option.
We intend to make the new format the default in the near future.
Details of the new format are in the PROTOCOL.key file.
* ssh(1), sshd(8): Add a new transport cipher
"chacha20-poly1305@openssh.com" that combines Daniel Bernstein's
ChaCha20 stream cipher and Poly1305 MAC to build an authenticated
encryption mode. Details are in the PROTOCOL.chacha20poly1305 file.
* ssh(1), sshd(8): Refuse RSA keys from old proprietary clients and
servers that use the obsolete RSA+MD5 signature scheme. It will
still be possible to connect with these clients/servers but only
DSA keys will be accepted, and OpenSSH will refuse connection
entirely in a future release.
* ssh(1), sshd(8): Refuse old proprietary clients and servers that
use a weaker key exchange hash calculation.
* ssh(1): Increase the size of the Diffie-Hellman groups requested
for each symmetric key size. New values from NIST Special
Publication 800-57 with the upper limit specified by RFC4419.
* ssh(1), ssh-agent(1): Support PKCS#11 tokens that only provide
X.509 certs instead of raw public keys (requested as bz#1908).
* ssh(1): Add a ssh_config(5) "Match" keyword that allows
conditional configuration to be applied by matching on hostname,
user and result of arbitrary commands.
* ssh(1): Add support for client-side hostname canonicalisation
using a set of DNS suffixes and rules in ssh_config(5). This
allows unqualified names to be canonicalised to fully-qualified
domain names to eliminate ambiguity when looking up keys in
known_hosts or checking host certificate names.
* sftp-server(8): Add the ability to whitelist and/or blacklist sftp
protocol requests by name.
* sftp-server(8): Add a sftp "fsync@openssh.com" to support calling
fsync(2) on an open file handle.
* sshd(8): Add a ssh_config(5) PermitTTY to disallow TTY allocation,
mirroring the longstanding no-pty authorized_keys option.
* ssh(1): Add a ssh_config ProxyUseFDPass option that supports the
use of ProxyCommands that establish a connection and then pass a
connected file descriptor back to ssh(1). This allows the
ProxyCommand to exit rather than staying around to transfer data.
Bugfixes:
* ssh(1), sshd(8): Fix potential stack exhaustion caused by nested
certificates.
* ssh(1): bz#1211: make BindAddress work with UsePrivilegedPort.
* sftp(1): bz#2137: fix the progress meter for resumed transfer.
* ssh-add(1): bz#2187: do not request smartcard PIN when removing
keys from ssh-agent.
* sshd(8): bz#2139: fix re-exec fallback when original sshd binary
cannot be executed.
* ssh-keygen(1): Make relative-specified certificate expiry times
relative to current time and not the validity start time.
* sshd(8): bz#2161: fix AuthorizedKeysCommand inside a Match block.
* sftp(1): bz#2129: symlinking a file would incorrectly canonicalise
the target path.
* ssh-agent(1): bz#2175: fix a use-after-free in the PKCS#11 agent
helper executable.
* sshd(8): Improve logging of sessions to include the user name,
remote host and port, the session type (shell, command, etc.) and
allocated TTY (if any).
* sshd(8): bz#1297: tell the client (via a debug message) when
their preferred listen address has been overridden by the
server's GatewayPorts setting.
* sshd(8): bz#2162: include report port in bad protocol banner
message.
* sftp(1): bz#2163: fix memory leak in error path in do_readdir().
* sftp(1): bz#2171: don't leak file descriptor on error.
* sshd(8): Include the local address and port in "Connection from
..." message (only shown at loglevel>=verbose).
Portable OpenSSH:
* Please note that this is the last version of Portable OpenSSH that
will support versions of OpenSSL prior to 0.9.6. Support (i.e.
SSH_OLD_EVP) will be removed following the 6.5p1 release.
* Portable OpenSSH will attempt compile and link as a Position
Independent Executable on Linux, OS X and OpenBSD on recent gcc-
like compilers. Other platforms and older/other compilers may
request this using the --with-pie configure flag.
* A number of other toolchain-related hardening options are used
automatically if available, including -ftrapv to abort on signed
integer overflow and options to write-protect dynamic linking
information. The use of these options may be disabled using the
--without-hardening configure flag.
* If the toolchain supports it, one of the -fstack-protector-strong,
-fstack-protector-all or -fstack-protector compilation flag are
used to add guards to mitigate attacks based on stack overflows.
The use of these options may be disabled using the
--without-stackprotect configure option.
* sshd(8): Add support for pre-authentication sandboxing using the
Capsicum API introduced in FreeBSD 10.
* Switch to a ChaCha20-based arc4random() PRNG for platforms that do
not provide their own.
* sshd(8): bz#2156: restore Linux oom_adj setting when handling
SIGHUP to maintain behaviour over retart.
* sshd(8): bz#2032: use local username in krb5_kuserok check rather
than full client name which may be of form user@REALM.
* ssh(1), sshd(8): Test for both the presence of ECC NID numbers in
OpenSSL and that they actually work. Fedora (at least) has
NID_secp521r1 that doesn't work.
* bz#2173: use pkg-config --libs to include correct -L location for
libedit.
from ftp.openbsd.org
Resolve conflicts
Imported openssh-5.6
Merge in our changes: - conditionalize login_cap - conditionalize bsd_auth - bring in pam from portable - restore krb5, krb4, afs, skey - bring in hpn patches, disable mt aes cipher, keep speedups and cipher none - add ignore root rhosts option - fix ctype macro arguments - umac is broken, disable it - better ~homedir handling - netbsd style tunnels - urandom, xhome, chrootdir, rescuedir NetBSD handling - utmp/utmpx handling - handle tty posix_vdisable properly - handle setuid and unsetuid the posix way instead of setresuid() - add all missing functions - add new moduli - add build glue
import 5.2 from ftp.openbsd.org
Initial revision