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Ubuntu Security Notice USN-2184-1

Ubuntu Security Notice USN-2184-1
Posted Apr 29, 2014
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2184-1 - Frederic 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.

tags | advisory, local
systems | linux, ubuntu
MD5 | 02967c10b021ac963a0d5b953d4628d9

Ubuntu Security Notice USN-2184-1

Change Mirror Download
============================================================================
Ubuntu Security Notice USN-2184-1
April 29, 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:

Fr=C3=A9d=C3=A9ric 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

After a standard system update you need to restart your session to make all
the necessary changes.

References:
http://www.ubuntu.com/usn/usn-2184-1
https://launchpad.net/bugs/1308850, https://launchpad.net/bugs/1313885

Package Information:
https://launchpad.net/ubuntu/+source/unity/7.2.0+14.04.20140423-0ubuntu1.1

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