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OpenSSH 4.7/4.7p1 released

OpenSSH 4.7/4.7p1 released Sep 4, 2007

OpenSSH 4.7 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 version 1.3, 1.5 and 2.0
implementation and includes sftp client and server support.

 

Changes since OpenSSH 4.6:
============================

Security bugs resolved in this release:

 * Prevent ssh(1) from using a trusted X11 cookie if creation of an
   untrusted cookie fails; found and fixed by Jan Pechanec.

Other changes, new functionality and fixes in this release:

 * 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.

 * A -K flag was added to ssh(1) to set GSSAPIAuthentication=Yes

 * 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. (bz #1261)

 * The following bugs have been fixed in this release:

   - When using a ProxyCommand in ssh(1), set the outgoing hostname with
     gethostname(2), allowing hostbased authentication to work (bz #616)
   - Make scp(1) skip FIFOs rather than hanging (bz #856)
   - Encode non-printing characters in scp(1) filenames.
     these could cause copies to be aborted with a "protocol error"
     (bz #891)
   - Handle SIGINT in sshd(8) privilege separation child process to
     ensure that wtmp and lastlog records are correctly updated
     (bz #1196)
   - Report GSSAPI mechanism in errors, for libraries that support
     multiple mechanisms (bz #1220)
   - Improve documentation for ssh-add(1)'s -d option (bz #1224)
   - Rearrange and tidy GSSAPI code, removing server-only code being
     linked into the client. (bz #1225)
   - Delay execution of ssh(1)'s LocalCommand until after all forwadings
     have been established. (bz #1232)
   - In scp(1), do not truncate non-regular files (bz #1236)
   - Improve exit message from ControlMaster clients. (bz #1262)
   - Prevent sftp-server(8) from reading until it runs out of buffer
     space, whereupon it would exit with a fatal error. (bz #1286)

 * Portable OpenSSH bugs fixed:

   - Fix multiple inclusion of paths.h on AIX 5.1 systems. (bz #1243)
   - Implement getpeereid for Solaris using getpeerucred. Solaris
     systems will now refuse ssh-agent(1) and ssh(1) ControlMaster
     clients from different, non-root users (bz #1287)
   - Fix compilation warnings by including string.h if found. (bz #1294)
   - Remove redefinition of _res in getrrsetbyname.c for platforms that
     already define it. (bz #1299)
   - Fix spurious "chan_read_failed for istate 3" errors from sshd(8),
     a side-effect of the "hang on exit" fix introduced in 4.6p1.
     (bz #1306)
   - pam_end() was not being called if authentication failed (bz #1322)
   - Fix SELinux support when SELinux is in permissive mode. Previously
     sshd(8) was treating SELinux errors as always fatal. (bz #1325)
   - Ensure that pam_setcred(..., PAM_ESTABLISH_CRED) is called before
     pam_setcred(..., PAM_REINITIALIZE_CRED), fixing pam_dhkeys.
     (bz #1339)
   - Fix privilege separation on QNX - pre-auth only, this platform does
     not support file descriptior passing needed for post-auth privilege
     separation. (bz #1343)

Thanks to everyone who has contributed patches, reported bugs and
tested releases.

Checksums:
==========

- SHA1 (openssh-4.7.tar.gz) = 9ebaab9b31e01bd0d04425dc23536bcc78f8d990
- SHA1 (openssh-4.7p1.tar.gz) = 58357db9e64ba6382bef3d73d1d386fcdc0508f4

Reporting Bugs:
===============

- please read http://www.openssh.com/report.html
  and http://bugzilla.mindrot.org/

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.

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