============================================================================ Ubuntu Security Notice USN-2025-1 November 11, 2013 libav vulnerabilities ============================================================================ A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 13.10 - Ubuntu 13.04 - Ubuntu 12.10 - Ubuntu 12.04 LTS Summary: Libav could be made to crash or run programs as your login if it opened a specially crafted file. Software Description: - libav: Multimedia player, server, encoder and transcoder Details: It was discovered that Libav incorrectly handled certain malformed media files. If a user were tricked into opening a crafted media file, an attacker could cause a denial of service via application crash, or possibly execute arbitrary 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 13.10: libavcodec53 6:0.8.9-0ubuntu0.13.10.1 libavformat53 6:0.8.9-0ubuntu0.13.10.1 Ubuntu 13.04: libavcodec53 6:0.8.9-0ubuntu0.13.04.1 libavformat53 6:0.8.9-0ubuntu0.13.04.1 Ubuntu 12.10: libavcodec53 6:0.8.9-0ubuntu0.12.10.1 libavformat53 6:0.8.9-0ubuntu0.12.10.1 Ubuntu 12.04 LTS: libavcodec53 4:0.8.9-0ubuntu0.12.04.1 libavformat53 4:0.8.9-0ubuntu0.12.04.1 This update uses a new upstream release, which includes additional bug fixes. In general, a standard system update will make all the necessary changes. References: http://www.ubuntu.com/usn/usn-2025-1 https://launchpad.net/bugs/1249621 Package Information: https://launchpad.net/ubuntu/+source/libav/6:0.8.9-0ubuntu0.13.10.1 https://launchpad.net/ubuntu/+source/libav/6:0.8.9-0ubuntu0.13.04.1 https://launchpad.net/ubuntu/+source/libav/6:0.8.9-0ubuntu0.12.10.1 https://launchpad.net/ubuntu/+source/libav/4:0.8.9-0ubuntu0.12.04.1