Ubuntu Security Notice USN-1858-1
5th June, 2013
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 13.04
- Ubuntu 12.10
- Ubuntu 12.04 LTS
Several security issues were fixed in libxfixes.
- libxfixes - X11 miscellaneous fixes extension library
Ilja van Sprundel discovered multiple security issues in various X.org
libraries and components. An attacker could use these issues to cause
applications to crash, resulting in a denial of service, or possibly
execute arbitrary code.
The problem can be corrected by updating your system to the following package version:
- Ubuntu 13.04:
- libxfixes3 1:5.0-4ubuntu5.13.04.1
- Ubuntu 12.10:
- libxfixes3 1:5.0-4ubuntu188.8.131.52
- Ubuntu 12.04 LTS:
- libxfixes3 1:5.0-4ubuntu4.1
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to restart your session to make all
the necessary changes.