Ubuntu Security Notice USN-2012-1
6th November, 2013
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 13.10
Light Display Manager could be made to expose sensitive information locally.
- lightdm - Display Manager
Christian Prim discovered that Light Display Manager incorrectly applied
the AppArmor security profile when the Guest account is used. A local
attacker could use this issue to possibly gain access to sensitive
The problem can be corrected by updating your system to the following package version:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
This update uses a new upstream release, which includes additional bug
fixes. After a standard system update you need to reboot your computer to
make all the necessary changes.