[Bug 582251] Re: debug1: Remote: No xauth program; cannot forward with spoofing.

[Ubuntu QA's Bug Bot]

** Tags added: testcase

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Title:
  debug1: Remote: No xauth program; cannot forward with spoofing.

Status in “openssh” package in Ubuntu:
  Fix Released
Status in “openssh” source package in Lucid:
  Fix Released

Bug description:
  STABLE RELEASE UPDATE:

  Impact: X forwarding is not usable after a fresh install of openssh-
  server, unless x11-common is also installed.

  Development branch: Bug has been addressed by using /usr/bin/xauth
  rather than /usr/bin/X11/xauth.  We used the /usr/bin/X11 symlink to
  smooth X's move to /usr/bin, but at some point xauth stopped depending
  on x11-common so this no longer automatically works, and X's move is a
  long time in the past now so we might as well just use the new path.

  Patch: http://bazaar.launchpad.net/~cjwatson/ubuntu/lucid/openssh
  /lucid-proposed/revision/3201

  TEST CASE: Install openssh-server on a fresh server install.  From
  another machine running an X session, connect to it using 'ssh -X'.
  If and only if this bug is fixed, the DISPLAY environment variable
  should be set.

  Regression potential: We should check that X forwarding still works,
  and that OpenSSH in general still seems to function normally.

  
  Original bug report:

  Fresh installation of a LUCID server (AMD64) has following major
  issue:

  X11Forwarding does not work anymore. Running the ssh-client (again
  from Lucid Desktop) like this "ssh -v servername" throws:

  ...
  debug1: Remote: No xauth program; cannot forward with spoofing.
  ...

  Running "strings /usr/sbin/sshd |grep xauth" on the remote server shows that sshd is looking for xauth in this path:
  /usr/bin/X11/xauth

  But this does NOT exist until the package "x11-common" is installed.

  Hint: Package "xauth" which is automatically installed by openssh-
  server has its binary in "/usr/bin".

  Suggestion: SSHD should be fixed to look for xauth in the right
  directory or openss-server package should be fixed to depend on
  x11-common package instead xauth

  There are many other X11-Forwarding bug reports - maybe related to
  this issue.

  ProblemType: Bug
  DistroRelease: Ubuntu 10.04
  Package: openssh-server 1:5.3p1-3ubuntu3
  ProcVersionSignature: Ubuntu 2.6.32-22.33-generic 2.6.32.11+drm33.2
  Uname: Linux 2.6.32-22-generic x86_64
  Architecture: amd64
  Date: Tue May 18 15:28:14 2010
  InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429)
  ProcEnviron:
   PATH=(custom, user)
   LANG=de_DE.utf8
   SHELL=/bin/bash
  SourcePackage: openssh

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