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=========================================================== Ubuntu Security Notice USN-453-1 April 18, 2007 libx11 vulnerability CVE-2007-1667 =========================================================== A security issue affects the following Ubuntu releases: Ubuntu 6.06 LTS Ubuntu 6.10 This advisory also applies to the corresponding versions of Kubuntu, Edubuntu, and Xubuntu. The problem can be corrected by upgrading your system to the following package versions: Ubuntu 6.06 LTS: libx11-6 2:1.0.0-0ubuntu9.1 Ubuntu 6.10: libx11-6 2:1.0.3-0ubuntu4.1 After a standard system upgrade you need to restart your session or reboot your computer to effect the necessary changes. Details follow: 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 privileges.