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

Ubuntu Security Notice USN-1639-1

22nd 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 version:

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.