USN-2436-2: X.Org X server vulnerabilities

Releases

• Ubuntu 14.10
• Ubuntu 14.04 ESM
• Ubuntu 12.04

Packages

• xorg-server - X.Org X11 server
• xorg-server-lts-trusty - Xorg X server - source files

Details

USN-2436-1 fixed vulnerabilities in the X.Org X server. Since publication,
additional fixes have been made available for these issues. This update
adds the additional fixes.

Original advisory details:

Ilja van Sprundel discovered a multitude of security issues in the X.Org X
server. An attacker able to connect to an X server, either locally or
remotely, could use these issues to cause the X server to crash or execute
arbitrary code resulting in possible privilege escalation.

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 14.10

• xserver-xorg-core - 2:1.16.0-1ubuntu1.2

Ubuntu 14.04

• xserver-xorg-core - 2:1.15.1-0ubuntu2.5

Ubuntu 12.04

• xserver-xorg-core - 2:1.11.4-0ubuntu10.16
• xserver-xorg-core-lts-trusty - 2:1.15.1-0ubuntu2~precise4

After a standard system update you need to reboot your computer to make
all the necessary changes.

References

• https://launchpad.net/bugs/1400942