Ubuntu Security Notice USN-669-1
11th November, 2008
gnome-screensaver vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 7.10
- Ubuntu 6.06 LTS
Software description
- gnome-screensaver
Details
It was discovered that the notify feature in gnome-screensaver could let
a local attacker read the clipboard contents of a locked session by
using Ctrl-V. (CVE-2007-6389)
Alan Matsuoka discovered that gnome-screensaver did not properly handle
network outages when using a remote authentication service. During a
network interruption, or by disconnecting the network cable, a local
attacker could gain access to locked sessions. (CVE-2008-0887)
Update instructions
The problem can be corrected by updating your system to the following package version:
- Ubuntu 7.10:
- gnome-screensaver 2.20.0-0ubuntu4.3
- Ubuntu 6.06 LTS:
- gnome-screensaver 2.14.3-0ubuntu1.1
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
After a standard system upgrade you need to restart all user sessions on
your computer to effect the necessary changes.