USN-2184-1: Unity vulnerabilities

29 April 2014

unity vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 14.04 LTS

Summary

The Unity lock screen could be bypassed.

Software Description

  • unity - Interface designed for efficiency of space and interaction.

Details

Frédéric Bardy discovered that Unity incorrectly filtered keyboard shortcuts when the screen was locked. A local attacker could possibly use this issue to run commands, and unlock the current session.

Giovanni Mellini discovered that Unity could display the Dash in certain conditions when the screen was locked. A local attacker could possibly use this issue to run commands, and unlock the current session.

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 14.04 LTS
unity - 7.2.0+14.04.20140423-0ubuntu1.1

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.

References