Ubuntu Security Notice USN-453-1
18th April, 2007
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 6.10
- Ubuntu 6.06 LTS
Multiple integer overflows were found in the XGetPixel function of
libx11. If a user were tricked into opening a specially crafted XWD
image, remote attackers could execute arbitrary code with user
The problem can be corrected by updating your system to the following package version:
- Ubuntu 6.10:
- libx11-6 2:1.0.3-0ubuntu4.1
- Ubuntu 6.06 LTS:
- libx11-6 2:1.0.0-0ubuntu9.1
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 or
reboot your computer to effect the necessary changes.