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Ubuntu alert USN-1333-1 (libav)
========================================================================== Ubuntu Security Notice USN-1333-1 January 17, 2012 libav vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 11.10 - Ubuntu 11.04 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: Steve Manzuik discovered that Libav incorrectly handled certain malformed Matroska files. If a user were tricked into opening a crafted Matroska 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. This issue only affected Ubuntu 11.04. (CVE-2011-3504) Phillip Langlois discovered that Libav incorrectly handled certain malformed QDM2 streams. If a user were tricked into opening a crafted QDM2 stream 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. (CVE-2011-4351) Phillip Langlois discovered that Libav incorrectly handled certain malformed VP3 streams. If a user were tricked into opening a crafted 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. (CVE-2011-4352) Phillip Langlois discovered that Libav incorrectly handled certain malformed VP5 and VP6 streams. If a user were tricked into opening a crafted 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. (CVE-2011-4353) It was discovered that Libav incorrectly handled certain malformed VMD files. If a user were tricked into opening a crafted VMD 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. (CVE-2011-4364) Phillip Langlois discovered that Libav incorrectly handled certain malformed SVQ1 streams. If a user were tricked into opening a crafted SVQ1 stream 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. (CVE-2011-4579) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 11.10: libavcodec53 4:0.7.3-0ubuntu0.11.10.1 libavformat53 4:0.7.3-0ubuntu0.11.10.1 Ubuntu 11.04: libavcodec52 4:0.6.4-0ubuntu0.11.04.1 libavformat52 4:0.6.4-0ubuntu0.11.04.1 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-1333-1 CVE-2011-3504, CVE-2011-4351, CVE-2011-4352, CVE-2011-4353, CVE-2011-4364, CVE-2011-4579 Package Information: https://launchpad.net/ubuntu/+source/libav/4:0.7.3-0ubunt... https://launchpad.net/ubuntu/+source/libav/4:0.6.4-0ubunt... -- ubuntu-security-announce mailing list ubuntu-security-announce@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-security... (Log in to post comments)
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