CVE-2016-1908

Priority
Description
The client in OpenSSH before 7.2 mishandles failed cookie generation for
untrusted X11 forwarding and relies on the local X11 server for
access-control decisions, which allows remote X11 clients to trigger a
fallback and obtain trusted X11 forwarding privileges by leveraging
configuration issues on this X11 server, as demonstrated by lack of the
SECURITY extension on this X11 server.
Assigned-to
mdeslaur
Notes
sbeattiefirst patch needs to be applied before second one, which
addresses the issue
mdeslaurcontrary to release not, not fixed in 7.1p2:
http://lists.mindrot.org/pipermail/openssh-unix-dev/2016-January/034684.html
Package
Upstream:released (7.2)
Ubuntu 12.04 ESM (Precise Pangolin):released (1:5.9p1-5ubuntu1.9)
Ubuntu 14.04 ESM (Trusty Tahr):released (1:6.6p1-2ubuntu2.7)
Ubuntu 16.04 LTS (Xenial Xerus):not-affected (1:7.2p2-4)
Patches:
Upstream:https://anongit.mindrot.org/openssh.git/commit/?id=f98a09cacff7baad8748c9aa217afd155a4d493f
Upstream:https://anongit.mindrot.org/openssh.git/commit/?id=ed4ce82dbfa8a3a3c8ea6fa0db113c71e234416c
More Information

Updated: 2020-07-28 19:56:36 UTC (commit d26b6ca9f5b3adb89bb036ce73ae7dab894935ec)