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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).
2011-08-06 - 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@
2011-05-29 - 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).
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;
2010-08-31 - 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@
2010-08-31 - jmc@cvs.openbsd.org 2010/08/08 19:36:30Damien Miller
[ssh-keysign.8 ssh.1 sshd.8] use the same template for all FILES sections; i.e. -compact/.Pp where we have multiple items, and .Pa for path names;
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).
2010-08-05 - djm@cvs.openbsd.org 2010/08/04 05:37:01Damien Miller
[ssh.1 ssh_config.5 sshd.8] Remove mentions of weird "addr/port" alternate address format for IPv6 addresses combinations. It hasn't worked for ages and we have supported the more commen "[addr]:port" format for a long time. ok jmc@ markus@
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.
2010-03-31* New upstream release (LP: #535029).Colin Watson
- After a transition period of about 10 years, this release disables SSH protocol 1 by default. Clients and servers that need to use the legacy protocol must explicitly enable it in ssh_config / sshd_config or on the command-line. - Remove the libsectok/OpenSC-based smartcard code and add support for PKCS#11 tokens. This support is enabled by default in the Debian packaging, since it now doesn't involve additional library dependencies (closes: #231472, LP: #16918). - Add support for certificate authentication of users and hosts using a new, minimal OpenSSH certificate format (closes: #482806). - Added a 'netcat mode' to ssh(1): "ssh -W host:port ...". - Add the ability to revoke keys in sshd(8) and ssh(1). (For the Debian package, this overlaps with the key blacklisting facility added in openssh 1:4.7p1-9, but with different file formats and slightly different scopes; for the moment, I've roughly merged the two.) - Various multiplexing improvements, including support for requesting port-forwardings via the multiplex protocol (closes: #360151). - Allow setting an explicit umask on the sftp-server(8) commandline to override whatever default the user has (closes: #496843). - Many sftp client improvements, including tab-completion, more options, and recursive transfer support for get/put (LP: #33378). The old mget/mput commands never worked properly and have been removed (closes: #270399, #428082). - Do not prompt for a passphrase if we fail to open a keyfile, and log the reason why the open failed to debug (closes: #431538). - Prevent sftp from crashing when given a "-" without a command. Also, allow whitespace to follow a "-" (closes: #531561).
2010-03-05 - jmc@cvs.openbsd.org 2010/03/05 06:50:35Damien Miller
[ssh.1 sshd.8] tweak previous;
2010-03-05 - djm@cvs.openbsd.org 2010/03/04 23:19:29Damien Miller
[ssh.1 sshd.8] move section on CA and revoked keys from ssh.1 to sshd.8's known hosts format section and rework it a bit; requested by jmc@
2010-03-04 - djm@cvs.openbsd.org 2010/03/03 22:49:50Damien Miller
[sshd.8] the authorized_keys option for CA keys is "cert-authority", not "from=cert-authority". spotted by imorgan AT nas.nasa.gov
2010-03-03 - jmc@cvs.openbsd.org 2010/02/26 22:09:28Damien Miller
[ssh-keygen.1 ssh.1 sshd.8] tweak previous;
2010-02-27 - OpenBSD CVS SyncDamien Miller
- djm@cvs.openbsd.org 2010/02/26 20:29:54 [PROTOCOL PROTOCOL.agent PROTOCOL.certkeys addrmatch.c auth-options.c] [auth-options.h auth.h auth2-pubkey.c authfd.c dns.c dns.h hostfile.c] [hostfile.h kex.h kexdhs.c kexgexs.c key.c key.h match.h monitor.c] [myproposal.h servconf.c servconf.h ssh-add.c ssh-agent.c ssh-dss.c] [ssh-keygen.1 ssh-keygen.c ssh-rsa.c ssh.1 ssh.c ssh2.h sshconnect.c] [sshconnect2.c sshd.8 sshd.c sshd_config.5] Add support for certificate key types for users and hosts. OpenSSH certificate key types are not X.509 certificates, but a much simpler format that encodes a public key, identity information and some validity constraints and signs it with a CA key. CA keys are regular SSH keys. This certificate style avoids the attack surface of X.509 certificates and is very easy to deploy. Certified host keys allow automatic acceptance of new host keys when a CA certificate is marked as sh/known_hosts. see VERIFYING HOST KEYS in ssh(1) for details. Certified user keys allow authentication of users when the signing CA key is marked as trusted in authorized_keys. See "AUTHORIZED_KEYS FILE FORMAT" in sshd(8) for details. Certificates are minted using ssh-keygen(1), documentation is in the "CERTIFICATES" section of that manpage. Documentation on the format of certificates is in the file PROTOCOL.certkeys feedback and ok markus@
2010-02-02 - djm@cvs.openbsd.org 2010/01/30 21:08:33Damien Miller
[sshd.8] debug output goes to stderr, not "the system log"; ok markus dtucker
2010-01-24* New upstream release.Colin Watson
* Update to GSSAPI patch from http://www.sxw.org.uk/computing/patches/openssh-5.3p1-gsskex-all-20100124.patch.
2010-01-04Remove/adjust manual page references to BSD-specific /etc/rc (closes:Colin Watson
#513417).
2010-01-04Remove manual page references to login.conf, which aren't applicable onColin Watson
non-BSD systems (closes: #154434).
2010-01-01* New upstream release (closes: #536182). Yes, I know 5.3p1 has been outColin Watson
for a while, but there's no GSSAPI patch available for it yet. - Change the default cipher order to prefer the AES CTR modes and the revised "arcfour256" mode to CBC mode ciphers that are susceptible to CPNI-957037 "Plaintext Recovery Attack Against SSH". - Add countermeasures to mitigate CPNI-957037-style attacks against the SSH protocol's use of CBC-mode ciphers. Upon detection of an invalid packet length or Message Authentication Code, ssh/sshd will continue reading up to the maximum supported packet length rather than immediately terminating the connection. This eliminates most of the known differences in behaviour that leaked information about the plaintext of injected data which formed the basis of this attack (closes: #506115, LP: #379329). - ForceCommand directive now accepts commandline arguments for the internal-sftp server (closes: #524423, LP: #362511). - Add AllowAgentForwarding to available Match keywords list (closes: #540623). - Make ssh(1) send the correct channel number for SSH2_MSG_CHANNEL_SUCCESS and SSH2_MSG_CHANNEL_FAILURE messages to avoid triggering 'Non-public channel' error messages on sshd(8) in openssh-5.1. - Avoid printing 'Non-public channel' warnings in sshd(8), since the ssh(1) has sent incorrect channel numbers since ~2004 (this reverts a behaviour introduced in openssh-5.1; closes: #496017). * Update to GSSAPI patch from http://www.sxw.org.uk/computing/patches/openssh-5.2p1-gsskex-all-20090726.patch, including cascading credentials support (LP: #416958).
2009-10-11 - jmc@cvs.openbsd.org 2009/10/08 20:42:12Darren Tucker
[sshd_config.5 ssh_config.5 sshd.8 ssh.1] some tweaks now that protocol 1 is not offered by default; ok markus
2009-06-21 - sobrado@cvs.openbsd.org 2009/03/26 08:38:39Darren Tucker
[sftp-server.8 sshd.8 ssh-agent.1] fix a few typographical errors found by spell(1). ok dtucker@, jmc@
2008-11-03 - jmc@cvs.openbsd.org 2008/10/03 13:08:12Damien Miller
[sshd.8] do not give an example of how to chmod files: we can presume the user knows that. removes an ambiguity in the permission of authorized_keys; ok deraadt
2008-07-22* New upstream release (closes: #474301). Important changes not previouslyColin Watson
backported to 4.7p1: - 4.9/4.9p1 (http://www.openssh.com/txt/release-4.9): + Added chroot(2) support for sshd(8), controlled by a new option "ChrootDirectory" (closes: #139047, LP: #24777). + Linked sftp-server(8) into sshd(8). The internal sftp server is used when the command "internal-sftp" is specified in a Subsystem or ForceCommand declaration. When used with ChrootDirectory, the internal sftp server requires no special configuration of files inside the chroot environment. + Added a protocol extension method "posix-rename@openssh.com" for sftp-server(8) to perform POSIX atomic rename() operations; sftp(1) prefers this if available (closes: #308561). + Removed the fixed limit of 100 file handles in sftp-server(8). + ssh(8) will now skip generation of SSH protocol 1 ephemeral server keys when in inetd mode and protocol 2 connections are negotiated. This speeds up protocol 2 connections to inetd-mode servers that also allow Protocol 1. + Accept the PermitRootLogin directive in a sshd_config(5) Match block. Allows for, e.g. permitting root only from the local network. + Reworked sftp(1) argument splitting and escaping to be more internally consistent (i.e. between sftp commands) and more consistent with sh(1). Please note that this will change the interpretation of some quoted strings, especially those with embedded backslash escape sequences. + Support "Banner=none" in sshd_config(5) to disable sending of a pre-login banner (e.g. in a Match block). + ssh(1) ProxyCommands are now executed with $SHELL rather than /bin/sh. + ssh(1)'s ConnectTimeout option is now applied to both the TCP connection and the SSH banner exchange (previously it just covered the TCP connection). This allows callers of ssh(1) to better detect and deal with stuck servers that accept a TCP connection but don't progress the protocol, and also makes ConnectTimeout useful for connections via a ProxyCommand. + scp(1) incorrectly reported "stalled" on slow copies (closes: #140828). + scp(1) date underflow for timestamps before epoch. + ssh(1) used the obsolete SIG DNS RRtype for host keys in DNS, instead of the current standard RRSIG. + Correctly drain ACKs when a sftp(1) upload write fails midway, avoids a fatal() exit from what should be a recoverable condition. + Fixed ssh-keygen(1) selective host key hashing (i.e. "ssh-keygen -HF hostname") to not include any IP address in the data to be hashed. + Make ssh(1) skip listening on the IPv6 wildcard address when a binding address of 0.0.0.0 is used against an old SSH server that does not support the RFC4254 syntax for wildcard bind addresses. + Enable IPV6_V6ONLY socket option on sshd(8) listen socket, as is already done for X11/TCP forwarding sockets (closes: #439661). + Fix FD leak that could hang a ssh(1) connection multiplexing master. + Make ssh(1) -q option documentation consistent with reality. + Fixed sshd(8) PAM support not calling pam_session_close(), or failing to call it with root privileges (closes: #372680). + Fix activation of OpenSSL engine support when requested in configure (LP: #119295). - 5.1/5.1p1 (http://www.openssh.com/txt/release-5.1): + Introduce experimental SSH Fingerprint ASCII Visualisation to ssh(1) and ssh-keygen(1). Visual fingerprint display is controlled by a new ssh_config(5) option "VisualHostKey". The intent is to render SSH host keys in a visual form that is amenable to easy recall and rejection of changed host keys. + sshd_config(5) now supports CIDR address/masklen matching in "Match address" blocks, with a fallback to classic wildcard matching. + sshd(8) now supports CIDR matching in ~/.ssh/authorized_keys from="..." restrictions, also with a fallback to classic wildcard matching. + Added an extended test mode (-T) to sshd(8) to request that it write its effective configuration to stdout and exit. Extended test mode also supports the specification of connection parameters (username, source address and hostname) to test the application of sshd_config(5) Match rules. + ssh(1) now prints the number of bytes transferred and the overall connection throughput for SSH protocol 2 sessions when in verbose mode (previously these statistics were displayed for protocol 1 connections only). + sftp-server(8) now supports extension methods statvfs@openssh.com and fstatvfs@openssh.com that implement statvfs(2)-like operations. + sftp(1) now has a "df" command to the sftp client that uses the statvfs@openssh.com to produce a df(1)-like display of filesystem space and inode utilisation (requires statvfs@openssh.com support on the server). + Added a MaxSessions option to sshd_config(5) to allow control of the number of multiplexed sessions supported over a single TCP connection. This allows increasing the number of allowed sessions above the previous default of 10, disabling connection multiplexing (MaxSessions=1) or disallowing login/shell/subsystem sessions entirely (MaxSessions=0). + Added a no-more-sessions@openssh.com global request extension that is sent from ssh(1) to sshd(8) when the client knows that it will never request another session (i.e. when session multiplexing is disabled). This allows a server to disallow further session requests and terminate the session in cases where the client has been hijacked. + ssh-keygen(1) now supports the use of the -l option in combination with -F to search for a host in ~/.ssh/known_hosts and display its fingerprint. + ssh-keyscan(1) now defaults to "rsa" (protocol 2) keys, instead of "rsa1". + Added an AllowAgentForwarding option to sshd_config(8) to control whether authentication agent forwarding is permitted. Note that this is a loose control, as a client may install their own unofficial forwarder. + ssh(1) and sshd(8): avoid unnecessary malloc/copy/free when receiving network data, resulting in a ~10% speedup. + ssh(1) and sshd(8) will now try additional addresses when connecting to a port forward destination whose DNS name resolves to more than one address. The previous behaviour was to try the only first address and give up if that failed. + ssh(1) and sshd(8) now support signalling that channels are half-closed for writing, through a channel protocol extension notification "eow@openssh.com". This allows propagation of closed file descriptors, so that commands such as "ssh -2 localhost od /bin/ls | true" do not send unnecessary data over the wire. + sshd(8): increased the default size of ssh protocol 1 ephemeral keys from 768 to 1024 bits. + When ssh(1) has been requested to fork after authentication ("ssh -f") with ExitOnForwardFailure enabled, delay the fork until after replies for any -R forwards have been seen. Allows for robust detection of -R forward failure when using -f. + "Match group" blocks in sshd_config(5) now support negation of groups. E.g. "Match group staff,!guests". + sftp(1) and sftp-server(8) now allow chmod-like operations to set set[ug]id/sticky bits. + The MaxAuthTries option is now permitted in sshd_config(5) match blocks. + Multiplexed ssh(1) sessions now support a subset of the ~ escapes that are available to a primary connection. + ssh(1) connection multiplexing will now fall back to creating a new connection in most error cases (closes: #352830). + Make ssh(1) deal more gracefully with channel requests that fail. Previously it would optimistically assume that requests would always succeed, which could cause hangs if they did not (e.g. when the server runs out of file descriptors). + ssh(1) now reports multiplexing errors via the multiplex slave's stderr where possible (subject to LogLevel in the mux master). + Prevent sshd(8) from erroneously applying public key restrictions leaned from ~/.ssh/authorized_keys to other authentication methods when public key authentication subsequently fails (LP: #161047). + Fixed an UMAC alignment problem that manifested on Itanium platforms.
2008-07-02 - djm@cvs.openbsd.org 2008/07/02 02:24:18Darren Tucker
[sshd_config sshd_config.5 sshd.8 servconf.c] increase default size of ssh protocol 1 ephemeral key from 768 to 1024 bits; prodded by & ok dtucker@ ok deraadt@
2008-06-13 - jmc@cvs.openbsd.org 2008/06/11 07:30:37Darren Tucker
[sshd.8] kill trailing whitespace;
2008-06-11 - djm@cvs.openbsd.org 2008/06/10 23:06:19Darren Tucker
[auth-options.c match.c servconf.c addrmatch.c sshd.8] support CIDR address matching in .ssh/authorized_keys from="..." stanzas ok and extensive testing dtucker@
2008-06-10 - jmc@cvs.openbsd.org 2008/06/10 08:17:40Darren Tucker
[sshd.8 sshd.c] - update usage() - fix SYNOPSIS, and sort options - some minor additional fixes
2008-06-10 - dtucker@cvs.openbsd.org 2008/06/10 04:50:25Darren Tucker
[sshd.c channels.h channels.c log.c servconf.c log.h servconf.h sshd.8] Add extended test mode (-T) and connection parameters for test mode (-C). -T causes sshd to write its effective configuration to stdout and exit. -C causes any relevant Match rules to be applied before output. The combination allows tesing of the parser and config files. ok deraadt djm
2008-06-08Add cross-references to ssh-vulnkey(1) to ssh(1), ssh-add(1),Colin Watson
ssh-keygen(1), and sshd(8) (closes: #484451).
2008-04-06Backport from 4.9p1:Colin Watson
- Ignore ~/.ssh/rc if a sshd_config ForcedCommand is specified (see http://www.securityfocus.com/bid/28531/info). - Add no-user-rc authorized_keys option to disable execution of ~/.ssh/rc.
2008-04-03 - jmc@cvs.openbsd.org 2008/03/27 22:37:57Damien Miller
[sshd.8] remove trailing whitespace;
2008-03-27 - djm@cvs.openbsd.org 2008/03/26 21:28:14Damien Miller
[auth-options.c auth-options.h session.c sshd.8] add no-user-rc authorized_keys option to disable execution of ~/.ssh/rc
2008-03-27 - jmc@cvs.openbsd.org 2008/02/11 07:58:28Damien Miller
[ssh.1 sshd.8 sshd_config.5] bump Mdocdate for pages committed in "febuary", necessary because of a typo in rcs.c;
2008-02-10 - mcbride@cvs.openbsd.org 2008/02/09 12:15:43Damien Miller
[ssh.1 sshd.8] Document the correct permissions for the ~/.ssh/ directory. ok jmc
2007-12-24* New upstream release (closes: #453367).Colin Watson
- CVE-2007-4752: Prevent ssh(1) from using a trusted X11 cookie if creation of an untrusted cookie fails; found and fixed by Jan Pechanec (closes: #444738). - sshd(8) in new installations defaults to SSH Protocol 2 only. Existing installations are unchanged. - The SSH channel window size has been increased, and both ssh(1) sshd(8) now send window updates more aggressively. These improves performance on high-BDP (Bandwidth Delay Product) networks. - ssh(1) and sshd(8) now preserve MAC contexts between packets, which saves 2 hash calls per packet and results in 12-16% speedup for arcfour256/hmac-md5. - A new MAC algorithm has been added, UMAC-64 (RFC4418) as "umac-64@openssh.com". UMAC-64 has been measured to be approximately 20% faster than HMAC-MD5. - Failure to establish a ssh(1) TunnelForward is now treated as a fatal error when the ExitOnForwardFailure option is set. - ssh(1) returns a sensible exit status if the control master goes away without passing the full exit status. - When using a ProxyCommand in ssh(1), set the outgoing hostname with gethostname(2), allowing hostbased authentication to work. - Make scp(1) skip FIFOs rather than hanging (closes: #246774). - Encode non-printing characters in scp(1) filenames. These could cause copies to be aborted with a "protocol error". - Handle SIGINT in sshd(8) privilege separation child process to ensure that wtmp and lastlog records are correctly updated. - Report GSSAPI mechanism in errors, for libraries that support multiple mechanisms. - Improve documentation for ssh-add(1)'s -d option. - Rearrange and tidy GSSAPI code, removing server-only code being linked into the client. - Delay execution of ssh(1)'s LocalCommand until after all forwardings have been established. - In scp(1), do not truncate non-regular files. - Improve exit message from ControlMaster clients. - Prevent sftp-server(8) from reading until it runs out of buffer space, whereupon it would exit with a fatal error (closes: #365541). - pam_end() was not being called if authentication failed (closes: #405041). - Manual page datestamps updated (closes: #433181).
2007-12-23Import OpenSSH 4.7p1.Colin Watson
2007-08-17 - (dtucker) [sshd.8] Many Linux variants use a single "!" to denote lockedDarren Tucker
accounts and that's what the code looks for, so make man page and code agree. Pointed out by Roumen Petrov.
2007-06-12* New upstream release (closes: #395507, #397961, #420035). ImportantColin Watson
changes not previously backported to 4.3p2: - 4.4/4.4p1 (http://www.openssh.org/txt/release-4.4): + On portable OpenSSH, fix a GSSAPI authentication abort that could be used to determine the validity of usernames on some platforms. + Implemented conditional configuration in sshd_config(5) using the "Match" directive. This allows some configuration options to be selectively overridden if specific criteria (based on user, group, hostname and/or address) are met. So far a useful subset of post-authentication options are supported and more are expected to be added in future releases. + Add support for Diffie-Hellman group exchange key agreement with a final hash of SHA256. + Added a "ForceCommand" directive to sshd_config(5). Similar to the command="..." option accepted in ~/.ssh/authorized_keys, this forces the execution of the specified command regardless of what the user requested. This is very useful in conjunction with the new "Match" option. + Add a "PermitOpen" directive to sshd_config(5). This mirrors the permitopen="..." authorized_keys option, allowing fine-grained control over the port-forwardings that a user is allowed to establish. + Add optional logging of transactions to sftp-server(8). + ssh(1) will now record port numbers for hosts stored in ~/.ssh/known_hosts when a non-standard port has been requested (closes: #50612). + Add an "ExitOnForwardFailure" option to cause ssh(1) to exit (with a non-zero exit code) when requested port forwardings could not be established. + Extend sshd_config(5) "SubSystem" declarations to allow the specification of command-line arguments. + Replacement of all integer overflow susceptible invocations of malloc(3) and realloc(3) with overflow-checking equivalents. + Many manpage fixes and improvements. + Add optional support for OpenSSL hardware accelerators (engines), enabled using the --with-ssl-engine configure option. + Tokens in configuration files may be double-quoted in order to contain spaces (closes: #319639). + Move a debug() call out of a SIGCHLD handler, fixing a hang when the session exits very quickly (closes: #307890). + Fix some incorrect buffer allocation calculations (closes: #410599). + ssh-add doesn't ask for a passphrase if key file permissions are too liberal (closes: #103677). + Likewise, ssh doesn't ask either (closes: #99675). - 4.6/4.6p1 (http://www.openssh.org/txt/release-4.6): + sshd now allows the enabling and disabling of authentication methods on a per user, group, host and network basis via the Match directive in sshd_config. + Fixed an inconsistent check for a terminal when displaying scp progress meter (closes: #257524). + Fix "hang on exit" when background processes are running at the time of exit on a ttyful/login session (closes: #88337). * Update to current GSSAPI patch from http://www.sxw.org.uk/computing/patches/openssh-4.6p1-gsskex-20070312.patch; install ChangeLog.gssapi.
2007-06-11 - pvalchev@cvs.openbsd.org 2007/06/07 19:37:34Damien Miller
[kex.h mac.c mac.h monitor_wrap.c myproposal.h packet.c ssh.1] [ssh_config.5 sshd.8 sshd_config.5] Add a new MAC algorithm for data integrity, UMAC-64 (not default yet, must specify umac-64@openssh.com). Provides about 20% end-to-end speedup compared to hmac-md5. Represents a different approach to message authentication to that of HMAC that may be beneficial if HMAC based on one of its underlying hash algorithms is found to be vulnerable to a new attack. http://www.ietf.org/rfc/rfc4418.txt in conjunction with and OK djm@
2007-06-05 - jmc@cvs.openbsd.org 2007/05/31 19:20:16Darren Tucker
[scp.1 ssh_config.5 sftp-server.8 ssh-agent.1 sshd_config.5 sftp.1 ssh-keygen.1 ssh-keyscan.1 ssh-add.1 sshd.8 ssh.1 ssh-keysign.8] convert to new .Dd format; (We will need to teach mdoc2man.awk to understand this too.)
2007-03-21 - jmc@cvs.openbsd.org 2007/03/20 15:57:15Darren Tucker
[sshd.8] - let synopsis and description agree for -f - sort FILES - +.Xr ssh-keyscan 1 , from Igor Sobrado
2006-08-30 - dtucker@cvs.openbsd.org 2006/08/21 08:15:57Damien Miller
[sshd.8] Add more detail about what permissions are and aren't accepted for authorized_keys files. Corrections jmc@, ok djm@, "looks good" jmc@
2006-07-24 - dtucker@cvs.openbsd.org 2006/07/19 13:07:10Damien Miller
[servconf.c servconf.h session.c sshd.8 sshd_config sshd_config.5] Add ForceCommand keyword to sshd_config, equivalent to the "command=" key option, man page entry and example in sshd_config. Feedback & ok djm@, man page corrections & ok jmc@
2006-07-12 - jmc@cvs.openbsd.org 2006/07/10 16:04:21Darren Tucker
[sshd.8] s/and and/and/
2006-07-10 - dtucker@cvs.openbsd.org 2006/07/10 12:46:51Darren Tucker
[misc.c misc.h sshd.8 sshconnect.c] Add port identifier to known_hosts for non-default ports, based originally on a patch from Devin Nate in bz#910. For any connection using the default port or using a HostKeyAlias the format is unchanged, otherwise the host name or address is enclosed within square brackets in the same format as sshd's ListenAddress. Tested by many, ok markus@.
2006-05-12Merge 4.3p2 to the trunk.Colin Watson