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2013-05-07* New upstream release (http://www.openssh.com/txt/release-6.2).Colin Watson
- Add support for multiple required authentication in SSH protocol 2 via an AuthenticationMethods option (closes: #195716). - Fix Sophie Germain formula in moduli(5) (closes: #698612). - Update ssh-copy-id to Phil Hands' greatly revised version (closes: #99785, #322228, #620428; LP: #518883, #835901, #1074798).
2013-05-07merge 6.2p1; reorder additions to monitor.h for easier merging in futureColin Watson
2013-02-12 - dtucker@cvs.openbsd.org 2013/02/06 00:20:42Damien Miller
[servconf.c sshd_config sshd_config.5] Change default of MaxStartups to 10:30:100 to start doing random early drop at 10 connections up to 100 connections. This will make it harder to DoS as CPUs have come a long way since the original value was set back in 2000. Prompted by nion at debian org, ok markus@
2013-02-08CVE-2010-5107: Improve DoS resistance by changing default of MaxStartupsColin Watson
to 10:30:100 (closes: #700102).
2013-01-20 - jmc@cvs.openbsd.org 2013/01/18 08:00:49Damien Miller
[sshd_config.5] tweak previous;
2013-01-18 - djm@cvs.openbsd.org 2013/01/17 23:00:01Damien Miller
[auth.c key.c key.h ssh-keygen.1 ssh-keygen.c sshd_config.5] [krl.c krl.h PROTOCOL.krl] add support for Key Revocation Lists (KRLs). These are a compact way to represent lists of revoked keys and certificates, taking as little as a single bit of incremental cost to revoke a certificate by serial number. KRLs are loaded via the existing RevokedKeys sshd_config option. feedback and ok markus@
2013-01-09 - markus@cvs.openbsd.org 2013/01/08 18:49:04Damien Miller
[PROTOCOL authfile.c cipher.c cipher.h kex.c kex.h monitor_wrap.c] [myproposal.h packet.c ssh_config.5 sshd_config.5] support AES-GCM as defined in RFC 5647 (but with simpler KEX handling) ok and feedback djm@
2012-12-12 - markus@cvs.openbsd.org 2012/12/11 22:31:18Damien Miller
[PROTOCOL authfile.c cipher.c cipher.h kex.h mac.c myproposal.h] [packet.c ssh_config.5 sshd_config.5] add encrypt-then-mac (EtM) modes to openssh by defining new mac algorithms that change the packet format and compute the MAC over the encrypted message (including the packet size) instead of the plaintext data; these EtM modes are considered more secure and used by default. feedback and ok djm@
2012-12-07 - jmc@cvs.openbsd.org 2012/12/03 08:33:03Darren Tucker
[ssh-add.1 sshd_config.5] tweak previous;
2012-12-03 - djm@cvs.openbsd.org 2012/12/02 20:46:11Damien Miller
[auth-options.c channels.c servconf.c servconf.h serverloop.c session.c] [sshd_config.5] make AllowTcpForwarding accept "local" and "remote" in addition to its current "yes"/"no" to allow the server to specify whether just local or remote TCP forwarding is enabled. ok markus@
2012-11-04 - djm@cvs.openbsd.org 2012/11/04 11:09:15Damien Miller
[auth.h auth1.c auth2.c monitor.c servconf.c servconf.h sshd.c] [sshd_config.5] Support multiple required authentication via an AuthenticationMethods option. This option lists one or more comma-separated lists of authentication method names. Successful completion of all the methods in any list is required for authentication to complete; feedback and ok markus@
2012-11-04 - djm@cvs.openbsd.org 2012/11/04 10:38:43Damien Miller
[auth2-pubkey.c sshd.c sshd_config.5] Remove default of AuthorizedCommandUser. Administrators are now expected to explicitly specify a user. feedback and ok markus@
2012-11-04 - OpenBSD CVS SyncDamien Miller
- jmc@cvs.openbsd.org 2012/10/31 08:04:50 [sshd_config.5] tweak previous;
2012-10-31 - djm@cvs.openbsd.org 2012/10/30 21:29:55Damien Miller
[auth-rsa.c auth.c auth.h auth2-pubkey.c servconf.c servconf.h] [sshd.c sshd_config sshd_config.5] new sshd_config option AuthorizedKeysCommand to support fetching authorized_keys from a command in addition to (or instead of) from the filesystem. The command is run as the target server user unless another specified via a new AuthorizedKeysCommandUser option. patch originally by jchadima AT redhat.com, reworked by me; feedback and ok markus@
2012-10-05 - markus@cvs.openbsd.org 2012/10/04 13:21:50Darren Tucker
[myproposal.h ssh_config.5 umac.h sshd_config.5 ssh.1 sshd.8 mac.c] add umac128 variant; ok djm@ at n2k12 (note: further Makefile work is required)
2012-09-07* New upstream release (http://www.openssh.com/txt/release-6.1).Colin Watson
- Enable pre-auth sandboxing by default for new installs. - Allow "PermitOpen none" to refuse all port-forwarding requests (closes: #543683).
2012-09-06merge 6.1p1Colin Watson
2012-07-02 - naddy@cvs.openbsd.org 2012/06/29 13:57:25Darren Tucker
[ssh_config.5 sshd_config.5] match the documented MAC order of preference to the actual one; ok dtucker@
2012-06-30 - dtucker@cvs.openbsd.org 2012/06/28 05:07:45Damien Miller
[mac.c myproposal.h ssh_config.5 sshd_config.5] Remove hmac-sha2-256-96 and hmac-sha2-512-96 MACs since they were removed from draft6 of the spec and will not be in the RFC when published. Patch from mdb at juniper net via bz#2023, ok markus.
2012-06-20 - jmc@cvs.openbsd.org 2012/06/19 21:35:54Damien Miller
[sshd_config.5] tweak previous; ok markus
2012-06-20 - markus@cvs.openbsd.org 2012/06/19 18:25:28Damien Miller
[servconf.c servconf.h sshd_config.5] sshd_config: extend Match to allow AcceptEnv and {Allow,Deny}{Users,Groups} this allows 'Match LocalPort 1022' combined with 'AllowUser bauer' ok djm@ (back in March)
2012-05-19 - dtucker@cvs.openbsd.org 2012/05/19 06:30:30Darren Tucker
[sshd_config.5] Document PermitOpen none. bz#2001, patch from Loganaden Velvindron
2012-05-19- (dtucker) OpenBSD CVS SyncDarren Tucker
- dtucker@cvs.openbsd.org 2012/05/13 01:42:32 [servconf.h servconf.c sshd.8 sshd.c auth.c sshd_config.5] Add "Match LocalAddress" and "Match LocalPort" to sshd and adjust tests to match. Feedback and ok djm@ markus@.
2012-05-18* New upstream release (http://www.openssh.org/txt/release-6.0).Colin Watson
- Fix IPQoS not being set on non-mapped v4-in-v6 addressed connections (closes: #643312, #650512). - Add a new privilege separation sandbox implementation for Linux's new seccomp sandbox, automatically enabled on platforms that support it. (Note: privilege separation sandboxing is still experimental.)
2012-05-17merge 6.0p1Colin Watson
2012-04-22 - djm@cvs.openbsd.org 2012/04/12 02:43:55Damien Miller
[sshd_config sshd_config.5] mention AuthorizedPrincipalsFile=none default
2012-04-22 - djm@cvs.openbsd.org 2012/04/12 02:42:32Damien Miller
[servconf.c servconf.h sshd.c sshd_config sshd_config.5] VersionAddendum option to allow server operators to append some arbitrary text to the SSH-... banner; ok deraadt@ "don't care" markus@
2011-09-22 - djm@cvs.openbsd.org 2011/09/09 00:43:00Damien Miller
[ssh_config.5 sshd_config.5] fix typo in IPQoS parsing: there is no "AF14" class, but there is an "AF21" class. Spotted by giesen AT snickers.org; ok markus stevesk
2011-09-06* New upstream release (http://www.openssh.org/txt/release-5.9).Colin Watson
- Introduce sandboxing of the pre-auth privsep child using an optional sshd_config(5) "UsePrivilegeSeparation=sandbox" mode that enables mandatory restrictions on the syscalls the privsep child can perform. - Add new SHA256-based HMAC transport integrity modes from http://www.ietf.org/id/draft-dbider-sha2-mac-for-ssh-02.txt. - The pre-authentication sshd(8) privilege separation slave process now logs via a socket shared with the master process, avoiding the need to maintain /dev/log inside the chroot (closes: #75043, #429243, #599240). - ssh(1) now warns when a server refuses X11 forwarding (closes: #504757). - sshd_config(5)'s AuthorizedKeysFile now accepts multiple paths, separated by whitespace (closes: #76312). The authorized_keys2 fallback is deprecated but documented (closes: #560156). - ssh(1) and sshd(8): set IPv6 traffic class from IPQoS, as well as IPv4 ToS/DSCP (closes: #498297). - ssh-add(1) now accepts keys piped from standard input. E.g. "ssh-add - < /path/to/key" (closes: #229124). - Clean up lost-passphrase text in ssh-keygen(1) (closes: #444691). - Say "required" rather than "recommended" in unprotected-private-key warning (LP: #663455).
2011-09-06merge 5.9p1Colin Watson
2011-08-06 - djm@cvs.openbsd.org 2011/08/02 01:22:11Damien Miller
[mac.c myproposal.h ssh.1 ssh_config.5 sshd.8 sshd_config.5] Add new SHA256 and SHA512 based HMAC modes from http://www.ietf.org/id/draft-dbider-sha2-mac-for-ssh-02.txt Patch from mdb AT juniper.net; feedback and ok markus@
2011-06-23 - djm@cvs.openbsd.org 2011/06/22 21:57:01Damien Miller
[servconf.c servconf.h sshd.c sshd_config.5 sandbox-rlimit.c] [sandbox-systrace.c sandbox.h configure.ac Makefile.in] introduce sandboxing of the pre-auth privsep child using systrace(4). This introduces a new "UsePrivilegeSeparation=sandbox" option for sshd_config that applies mandatory restrictions on the syscalls the privsep child can perform. This prevents a compromised privsep child from being used to attack other hosts (by opening sockets and proxying) or probing local kernel attack surface. The sandbox is implemented using systrace(4) in unsupervised "fast-path" mode, where a list of permitted syscalls is supplied. Any syscall not on the list results in SIGKILL being sent to the privsep child. Note that this requires a kernel with the new SYSTR_POLICY_KILL option. UsePrivilegeSeparation=sandbox will become the default in the future so please start testing it now. feedback dtucker@; ok markus@
2011-05-29 - jmc@cvs.openbsd.org 2011/05/23 07:10:21Damien Miller
[sshd.8 sshd_config.5] tweak previous; ok djm
2011-05-29OpenBSD CVS SyncDamien Miller
- djm@cvs.openbsd.org 2011/05/23 03:30:07 [auth-rsa.c auth.c auth.h auth2-pubkey.c monitor.c monitor_wrap.c pathnames.h servconf.c servconf.h sshd.8 sshd_config sshd_config.5] allow AuthorizedKeysFile to specify multiple files, separated by spaces. Bring back authorized_keys2 as a default search path (to avoid breaking existing users of this file), but override this in sshd_config so it will be no longer used on fresh installs. Maybe in 2015 we can remove it entierly :) feedback and ok markus@ dtucker@
2011-01-24* New upstream release (http://www.openssh.org/txt/release-5.7):Colin Watson
- Implement Elliptic Curve Cryptography modes for key exchange (ECDH) and host/user keys (ECDSA) as specified by RFC5656. ECDH and ECDSA offer better performance than plain DH and DSA at the same equivalent symmetric key length, as well as much shorter keys. - sftp(1)/sftp-server(8): add a protocol extension to support a hard link operation. It is available through the "ln" command in the client. The old "ln" behaviour of creating a symlink is available using its "-s" option or through the preexisting "symlink" command. - scp(1): Add a new -3 option to scp: Copies between two remote hosts are transferred through the local host (closes: #508613). - ssh(1): "atomically" create the listening mux socket by binding it on a temporary name and then linking it into position after listen() has succeeded. This allows the mux clients to determine that the server socket is either ready or stale without races (closes: #454784). Stale server sockets are now automatically removed (closes: #523250). - ssh(1): install a SIGCHLD handler to reap expired child process (closes: #594687). - ssh(1)/ssh-agent(1): honour $TMPDIR for client xauth and ssh-agent temporary directories (closes: #357469, although only if you arrange for ssh-agent to actually see $TMPDIR since the setgid bit will cause it to be stripped off).
2011-01-24merge 5.7p1Colin Watson
2010-12-26 - djm@cvs.openbsd.org 2010/12/08 04:02:47Damien Miller
[ssh_config.5 sshd_config.5] explain that IPQoS arguments are separated by whitespace; iirc requested by jmc@ a while back
2010-11-20 - jmc@cvs.openbsd.org 2010/11/18 15:01:00Damien Miller
[scp.1 sftp.1 ssh.1 sshd_config.5] add IPQoS to the various -o lists, and zap some trailing whitespace;
2010-11-20 - djm@cvs.openbsd.org 2010/11/13 23:27:51Damien Miller
[clientloop.c misc.c misc.h packet.c packet.h readconf.c readconf.h] [servconf.c servconf.h session.c ssh.c ssh_config.5 sshd_config.5] allow ssh and sshd to set arbitrary TOS/DSCP/QoS values instead of hardcoding lowdelay/throughput. bz#1733 patch from philipp AT redfish-solutions.com; ok markus@ deraadt@
2010-11-05 - jmc@cvs.openbsd.org 2010/10/28 18:33:28Damien Miller
[scp.1 ssh-add.1 ssh-keygen.1 ssh.1 ssh_config.5 sshd.8 sshd_config.5] knock out some "-*- nroff -*-" lines;
2010-09-24 - djm@cvs.openbsd.org 2010/09/22 05:01:30Damien Miller
[kex.c kex.h kexecdh.c kexecdhc.c kexecdhs.c readconf.c readconf.h] [servconf.c servconf.h ssh_config.5 sshconnect2.c sshd.c sshd_config.5] add a KexAlgorithms knob to the client and server configuration to allow selection of which key exchange methods are used by ssh(1) and sshd(8) and their order of preference. ok markus@
2010-08-31 - djm@cvs.openbsd.org 2010/08/31 11:54:45Damien Miller
[PROTOCOL PROTOCOL.agent PROTOCOL.certkeys auth2-jpake.c authfd.c] [authfile.c buffer.h dns.c kex.c kex.h key.c key.h monitor.c] [monitor_wrap.c myproposal.h packet.c packet.h pathnames.h readconf.c] [ssh-add.1 ssh-add.c ssh-agent.1 ssh-agent.c ssh-keygen.1 ssh-keygen.c] [ssh-keyscan.1 ssh-keyscan.c ssh-keysign.8 ssh.1 ssh.c ssh2.h] [ssh_config.5 sshconnect.c sshconnect2.c sshd.8 sshd.c sshd_config.5] [uuencode.c uuencode.h bufec.c kexecdh.c kexecdhc.c kexecdhs.c ssh-ecdsa.c] Implement Elliptic Curve Cryptography modes for key exchange (ECDH) and host/user keys (ECDSA) as specified by RFC5656. ECDH and ECDSA offer better performance than plain DH and DSA at the same equivalent symmetric key length, as well as much shorter keys. Only the mandatory sections of RFC5656 are implemented, specifically the three REQUIRED curves nistp256, nistp384 and nistp521 and only ECDH and ECDSA. Point compression (optional in RFC5656 is NOT implemented). Certificate host and user keys using the new ECDSA key types are supported. Note that this code has not been tested for interoperability and may be subject to change. feedback and ok markus@
2010-08-23* New upstream release (http://www.openssh.com/txt/release-5.6):Colin Watson
- Added a ControlPersist option to ssh_config(5) that automatically starts a background ssh(1) multiplex master when connecting. This connection can stay alive indefinitely, or can be set to automatically close after a user-specified duration of inactivity (closes: #335697, #350898, #454787, #500573, #550262). - Support AuthorizedKeysFile, AuthorizedPrincipalsFile, HostbasedUsesNameFromPacketOnly, and PermitTunnel in sshd_config(5) Match blocks (closes: #549858). - sftp(1): fix ls in working directories that contain globbing characters in their pathnames (LP: #530714).
2010-08-23merge 5.6p1Colin Watson
2010-07-02 - jmc@cvs.openbsd.org 2010/06/30 07:28:34Damien Miller
[sshd_config.5] tweak previous;
2010-07-02 - djm@cvs.openbsd.org 2010/06/29 23:16:46Damien Miller
[auth2-pubkey.c sshd_config.5] allow key options (command="..." and friends) in AuthorizedPrincipals; ok markus@
2010-06-26 - djm@cvs.openbsd.org 2010/06/22 04:22:59Damien Miller
[servconf.c sshd_config.5] expose some more sshd_config options inside Match blocks: AuthorizedKeysFile AuthorizedPrincipalsFile HostbasedUsesNameFromPacketOnly PermitTunnel bz#1764; feedback from imorgan AT nas.nasa.gov; ok dtucker@
2010-05-10 - jmc@cvs.openbsd.org 2010/05/07 12:49:17Damien Miller
[sshd_config.5] tweak previous;
2010-05-10 - djm@cvs.openbsd.org 2010/05/07 11:30:30Damien Miller
[auth-options.c auth-options.h auth.c auth.h auth2-pubkey.c] [key.c servconf.c servconf.h sshd.8 sshd_config.5] add some optional indirection to matching of principal names listed in certificates. Currently, a certificate must include the a user's name to be accepted for authentication. This change adds the ability to specify a list of certificate principal names that are acceptable. When authenticating using a CA trusted through ~/.ssh/authorized_keys, this adds a new principals="name1[,name2,...]" key option. For CAs listed through sshd_config's TrustedCAKeys option, a new config option "AuthorizedPrincipalsFile" specifies a per-user file containing the list of acceptable names. If either option is absent, the current behaviour of requiring the username to appear in principals continues to apply. These options are useful for role accounts, disjoint account namespaces and "user@realm"-style naming policies in certificates. feedback and ok markus@
2010-03-31Drop most of our "LogLevel SILENT" (-qq) patch. This was originallyColin Watson
introduced to match the behaviour of non-free SSH, in which -q does not suppress fatal errors, but matching the behaviour of OpenSSH upstream is much more important nowadays. We no longer document that -q does not suppress fatal errors (closes: #280609). Migrate "LogLevel SILENT" to "LogLevel QUIET" in sshd_config on upgrade.
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