USN-2303-1: Unity vulnerability
31 July 2014
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 14.04 LTS
The Unity lock screen could possibly be bypassed in certain circumstances.
- unity - Interface designed for efficiency of space and interaction.
It was discovered that in certain circumstances Unity failed to successfully grab the keyboard when switching to the lock screen. A local attacker could possibly use this issue to run commands, and unlock the current session.
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.
After a standard system update you need to restart your session to make all the necessary changes.