USN-1639-1: unity-firefox-extension vulnerability

22 November 2012

unity-firefox-extension vulnerability

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

  • Ubuntu 12.10


unity-firefox-extension could be made to crash or run programs as your login if it opened a malicious website.

Software Description

  • unity-firefox-extension - Firefox extension: Unity Integration


It was discovered that unity-firefox-extension incorrectly handled certain callbacks. A remote attacker could use this issue to cause unity-firefox-extension to crash, resulting in a denial of service, or possibly execute arbitrary code.

Update instructions

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

Ubuntu 12.10
xul-ext-unity - 2.4.1-0ubuntu1.1

To update your system, please follow these instructions:

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