USN-907-1: gnome-screensaver vulnerabilities

8 March 2010

gnome-screensaver vulnerabilities

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

  • Ubuntu 9.10
  • Ubuntu 9.04
  • Ubuntu 8.10

Software Description

  • gnome-screensaver

Details

It was discovered that gnome-screensaver did not correctly lock all screens when monitors get hotplugged. An attacker with physical access could use this flaw to gain access to a locked session. (CVE-2010-0285)

It was discovered that gnome-screensaver did not correctly handle keyboard grab when monitors get hotplugged. An attacker with physical access could use this flaw to gain access to a locked session. This issue only affected Ubuntu 9.10. (CVE-2010-0422)

Update instructions

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

Ubuntu 9.10
gnome-screensaver - 2.28.0-0ubuntu3.5
Ubuntu 9.04
gnome-screensaver - 2.24.0-0ubuntu6.1
Ubuntu 8.10
gnome-screensaver - 2.24.0-0ubuntu2.1

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References