Ubuntu Security Notice USN-2436-2
9th December, 2014
xorg-server, xorg-server-lts-trusty vulnerabilities
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 14.10
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS
Summary
USN-2436-1 contained incomplete fixes for the X.Org X server.
Software description
- 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 version:
- Ubuntu 14.10:
-
xserver-xorg-core
2:1.16.0-1ubuntu1.2
- Ubuntu 14.04 LTS:
-
xserver-xorg-core
2:1.15.1-0ubuntu2.5
- Ubuntu 12.04 LTS:
-
xserver-xorg-core
2:1.11.4-0ubuntu10.16
-
xserver-xorg-core-lts-trusty
2:1.15.1-0ubuntu2~precise4
To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to reboot your computer to make
all the necessary changes.