USN-550-2: Cairo regression

10 December 2007

libcairo regression

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 7.10
  • Ubuntu 7.04

Software Description

  • libcairo


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.

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 7.10
libcairo2 - 1.4.10-1ubuntu4.2
Ubuntu 7.04
libcairo2 - 1.4.2-0ubuntu1.2

To update your system, please follow these instructions:

After a standard system upgrade you need to restart your session to effect the necessary changes.