USN-1676-1: AppArmor update

19 December 2012

AppArmor update

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 12.04 LTS
  • Ubuntu 11.10


A weakness was discovered in the example AppArmor profile for chromium-browser.

Software Description

  • apparmor - Linux security system


Dan Rosenberg discovered that the example AppArmor profile for chromium-browser could be escaped by calling xdg-settings with a crafted environment.

Update instructions

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

Ubuntu 12.04 LTS
apparmor-profiles - 2.7.102-0ubuntu3.7
Ubuntu 11.10
apparmor-profiles - 2.7.0~beta1+bzr1774-1ubuntu2.2

To update your system, please follow these instructions:

In general, a standard system update will make all the necessary changes.