USN-538-1: libpng vulnerabilities
25 October 2007
libpng vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 7.10
- Ubuntu 7.04
- Ubuntu 6.10
- Ubuntu 6.06 LTS
Software Description
- libpng
Details
It was discovered that libpng did not properly perform bounds checking and comparisons in certain operations. An attacker could send a specially crafted PNG image and cause a denial of service in applications linked against libpng.
Update instructions
The problem can be corrected by updating your system to the following package versions:
- Ubuntu 7.10
- libpng12-0 - 1.2.15~beta5-2ubuntu0.1
- Ubuntu 7.04
- libpng12-0 - 1.2.15~beta5-1ubuntu1.1
- Ubuntu 6.10
- libpng12-0 - 1.2.8rel-5.1ubuntu0.3
- Ubuntu 6.06 LTS
- libpng12-0 - 1.2.8rel-5ubuntu0.3
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
After a standard system upgrade you need to reboot your computer to effect the necessary changes.