USN-550-2: Cairo regression
10 December 2007
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 7.10
- Ubuntu 7.04
USN-550-1 fixed vulnerabilities in Cairo. The upstream fixes were incomplete, and under certain situations, applications using Cairo would crash with a floating point error. This update fixes the problem.
We apologize for the inconvenience.
Original advisory details:
Peter Valchev discovered that Cairo did not correctly decode PNG image data. By tricking a user or automated system into processing a specially crafted PNG with Cairo, a remote attacker could execute arbitrary code with user privileges.
The problem can be corrected by updating your system to the following package versions:
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.