Light Display Manager could be made to expose sensitive information locally.
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 information.
6 November 2013
A security issue affects these releases of Ubuntu and its derivatives:
Light Display Manager could be made to expose sensitive information locally.
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 information.
The problem can be corrected by updating your system to the following package versions:
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.
Vulmon