USN-537-1: gnome-screensaver vulnerability

Ubuntu Security Notice USN-537-1

23rd October, 2007

gnome-screensaver vulnerability

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

  • Ubuntu 7.10

Software description

  • gnome-screensaver


Jens Askengren discovered that gnome-screensaver became confused when
running under Compiz, and could lose keyboard lock focus. A local
attacker could exploit this to bypass the user's locked screen saver.

Update instructions

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

Ubuntu 7.10:
gnome-screensaver 2.20.0-0ubuntu4.2

To update your system, please follow these instructions:

After a standard system upgrade you need to restart your session to effect
the necessary changes.