Ubuntu Security Notice USN-1399-2
13th March, 2012
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 11.10
Light Display Manager could be made to delete files as the administrator.
- lightdm - Display Manager
Ryan Lortie discovered that a guest session script bundled in the Light
Display Manager package improperly cleaned out certain guest session files.
A local attacker could use this issue to delete arbitrary files.
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.
In general, a standard system update will make all the necessary changes.