[Bug 1792231] Re: openssh-client: 'DISPLAY "(null)" invalid; disabling X11 forwarding'

[Bug Watch Updater]

** Changed in: openssh (Debian)
       Status: Unknown => Fix Released

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to openssh in Ubuntu.
https://bugs.launchpad.net/bugs/1792231

Title:
  openssh-client: 'DISPLAY "(null)" invalid; disabling X11 forwarding'

Status in openssh package in Ubuntu:
  Fix Released
Status in openssh source package in Trusty:
  Triaged
Status in openssh package in Debian:
  Fix Released

Bug description:
   affects ubuntu/openssh

  Hi,

  This bug is present in openssh in ubuntu trusty, I haven't tested other
  releases. When X11 forwarding is enabled (via ssh_config, or via -X),
  but no DISPLAY is available, ssh client produces this warning:

  DISPLAY "(null)" invalid; disabling X11 forwarding

  
  root at ubuntu-trusty:/# unset DISPLAY ; ssh -X ubuntu at localhost 'dpkg -l openssh-client | grep ii'
  ubuntu at localhost's password: 
  DISPLAY "(null)" invalid; disabling X11 forwarding
  ii  openssh-client                  1:6.6p1-2ubuntu2.10                        amd64        secure shell (SSH) client, for secure access to remote machines

  The bug was introduced by the changes to fix CVE-2016-1908.
  This upstream change fixes it:

  https://anongit.mindrot.org/openssh.git/commit/?id=5658ef2501e785fbbdf5de2dc33b1ff7a4dca73a

  See https://bugs.debian.org/908652

  Cheers,

   -- S

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/1792231/+subscriptions