============================================================================ Ubuntu Security Notice USN-1417-1 April 05, 2012 libpng vulnerability ============================================================================ A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 11.10 - Ubuntu 11.04 - Ubuntu 10.10 - Ubuntu 10.04 LTS - Ubuntu 8.04 LTS Summary: libpng could be made to crash or run programs as your login if it opened a specially crafted file. Software Description: - libpng: PNG (Portable Network Graphics) file library Details: It was discovered that libpng incorrectly handled certain memory operations. If a user or automated system using libpng were tricked into opening a specially crafted image, an attacker could exploit this to cause a denial of service or execute code with the privileges of the user invoking the program. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 11.10: libpng12-0 1.2.46-3ubuntu1.3 Ubuntu 11.04: libpng12-0 1.2.44-1ubuntu3.4 Ubuntu 10.10: libpng12-0 1.2.44-1ubuntu0.4 Ubuntu 10.04 LTS: libpng12-0 1.2.42-1ubuntu2.5 Ubuntu 8.04 LTS: libpng12-0 1.2.15~beta5-3ubuntu0.7 After a standard system update you need to restart your session to make all the necessary changes. References: http://www.ubuntu.com/usn/usn-1417-1 CVE-2011-3048 Package Information: https://launchpad.net/ubuntu/+source/libpng/1.2.46-3ubuntu1.3 https://launchpad.net/ubuntu/+source/libpng/1.2.44-1ubuntu3.4 https://launchpad.net/ubuntu/+source/libpng/1.2.44-1ubuntu0.4 https://launchpad.net/ubuntu/+source/libpng/1.2.42-1ubuntu2.5 https://launchpad.net/ubuntu/+source/libpng/1.2.15~beta5-3ubuntu0.7