** Changed in: openssh (Debian)
Status: Unknown => Fix Released
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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@ubuntu-trusty:/# unset DISPLAY ; ssh -X ubuntu@localhost 'dpkg -l
openssh-client | grep ii'
ubuntu@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,
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