Ubuntu Security Notice USN-907-1
8th 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 version:
- 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.