USN-1962-1: ubuntu-system-service vulnerability

18 September 2013

ubuntu-system-service vulnerability

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

  • Ubuntu 13.04
  • Ubuntu 12.10
  • Ubuntu 12.04 LTS


ubuntu-system-service could be tricked into bypassing polkit authorizations.

Software Description

  • ubuntu-system-service - Dbus service to set various system-wide configurations


It was discovered that ubuntu-system-service was using polkit in an unsafe manner. A local attacker could possibly use this issue to bypass intended polkit authorizations.

Update instructions

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

Ubuntu 13.04
ubuntu-system-service -
Ubuntu 12.10
ubuntu-system-service -
Ubuntu 12.04 LTS
ubuntu-system-service -

To update your system, please follow these instructions:

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