Ubuntu Security Notice 1333-1 - 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. 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. Various other issues were also addressed.
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