Ubuntu Security Notice USN-1962-1
18th September, 2013
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.
- 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
The problem can be corrected by updating your system to the following package version:
- Ubuntu 13.04:
- ubuntu-system-service 0.2.4.1
- Ubuntu 12.10:
- ubuntu-system-service 0.2.3.1
- Ubuntu 12.04 LTS:
- ubuntu-system-service 0.2.2.1
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.