Ubuntu 13.04 USN-1855-1 Critical Libxcb Denial of Service

ubuntu

June 5, 2013

Several security issues were fixed in libxcb.

Summary

Several security issues were fixed in libxcb.

Software Description:

- libxcb: X C Binding

Details:

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.

Topics Covered

security advisory denial of service critical ubuntu libxcb

Update Instructions

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

Ubuntu 13.04:
  libxcb1                         1.8.1-2ubuntu2.1

Ubuntu 12.10:
  libxcb1                         1.8.1-1ubuntu1.1

Ubuntu 12.04 LTS:
  libxcb1                         1.8.1-1ubuntu0.2

Ubuntu 10.04 LTS:
  libxcb1                         1.5-2ubuntu0.1

After a standard system update you need to restart your session to make all
the necessary changes.