USN-960-1: libpng vulnerabilities

8 July 2010

libpng vulnerabilities

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

  • Ubuntu 10.04 LTS
  • Ubuntu 9.10
  • Ubuntu 9.04
  • Ubuntu 8.04 LTS
  • Ubuntu 6.06 LTS

Summary

Software Description

  • libpng

Details

It was discovered that libpng did not properly handle certain malformed PNG images. If a user or automated system were tricked into opening a crafted PNG file, an attacker could cause a denial of service or possibly execute arbitrary code with the privileges of the user invoking the program. (CVE-2010-1205)

It was discovered that libpng did not properly handle certain malformed PNG images. If a user or automated system were tricked into processing a crafted PNG image, an attacker could possibly use this flaw to consume all available resources, resulting in a denial of service. (CVE-2010-2249)

Update instructions

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

Ubuntu 10.04 LTS
libpng12-0 - 1.2.42-1ubuntu2.1
Ubuntu 9.10
libpng12-0 - 1.2.37-1ubuntu0.2
Ubuntu 9.04
libpng12-0 - 1.2.27-2ubuntu2.2
Ubuntu 8.04 LTS
libpng12-0 - 1.2.15~beta5-3ubuntu0.3
Ubuntu 6.06 LTS
libpng12-0 - 1.2.8rel-5ubuntu0.6

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

After a standard system update you need to reboot your computer to make all the necessary changes.

References