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========================================================================== Ubuntu Security Notice USN-1478-1 June 18, 2012
libav vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.04 LTS - 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:
Mateusz Jurczyk and Gynvael Coldwind discovered that Libav incorrectly handled certain malformed DV files. If a user were tricked into opening a crafted DV 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 11.10. (CVE-2011-3929, CVE-2011-3936)
Mateusz Jurczyk and Gynvael Coldwind discovered that Libav incorrectly handled certain malformed NSV files. If a user were tricked into opening a crafted NSV 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 and Ubuntu 11.10. (CVE-2011-3940)
Mateusz Jurczyk and Gynvael Coldwind discovered that Libav incorrectly handled certain malformed Kega Game Video (KGV1) files. If a user were tricked into opening a crafted Kega Game Video (KGV1) 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 and Ubuntu 11.10. (CVE-2011-3945)
Mateusz Jurczyk and Gynvael Coldwind discovered that Libav incorrectly handled certain malformed MJPEG-B files. If a user were tricked into opening a crafted MJPEG-B 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 and Ubuntu 11.10. (CVE-2011-3947)
Mateusz Jurczyk and Gynvael Coldwind discovered that Libav incorrectly handled certain malformed DPCM files. If a user were tricked into opening a crafted DPCM 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 and Ubuntu 11.10. (CVE-2011-3951)
Mateusz Jurczyk and Gynvael Coldwind discovered that Libav incorrectly handled certain malformed KMVC files. If a user were tricked into opening a crafted KMVC 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 and Ubuntu 11.10. (CVE-2011-3952)
Jeong Wook Oh discovered that Libav incorrectly handled certain malformed ASF files. If a user were tricked into opening a crafted ASF 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 11.10. (CVE-2011-4031)
It was discovered that Libav incorrectly handled certain malformed Westwood SNDx files. If a user were tricked into opening a crafted Westwood SNDx 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 11.10. (CVE-2012-0848)
Diana Elena Muscalu discovered that Libav incorrectly handled certain malformed AAC files. If a user were tricked into opening a crafted AAC 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 and Ubuntu 11.10. (CVE-2012-0850)
It was discovered that Libav incorrectly handled certain malformed H.264 files. If a user were tricked into opening a crafted H.264 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-2012-0851)
It was discovered that Libav incorrectly handled certain malformed ADPCM files. If a user were tricked into opening a crafted ADPCM 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 and Ubuntu 11.10. (CVE-2012-0852)
It was discovered that Libav incorrectly handled certain malformed Atrac 3 files. If a user were tricked into opening a crafted Atrac 3 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 and Ubuntu 11.10. (CVE-2012-0853)
It was discovered that Libav incorrectly handled certain malformed Shorten files. If a user were tricked into opening a crafted Shorten 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 and Ubuntu 11.10. (CVE-2012-0858)
It was discovered that Libav incorrectly handled certain malformed Vorbis files. If a user were tricked into opening a crafted Vorbis 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 and Ubuntu 11.10. (CVE-2012-0859)
Fabian Yamaguchi discovered that Libav incorrectly handled certain malformed VQA files. If a user were tricked into opening a crafted VQA 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-2012-0947)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 12.04 LTS: libavcodec53 4:0.8.3-0ubuntu0.12.04.1 libavformat53 4:0.8.3-0ubuntu0.12.04.1
Ubuntu 11.10: libavcodec53 4:0.7.6-0ubuntu0.11.10.1 libavformat53 4:0.7.6-0ubuntu0.11.10.1
Ubuntu 11.04: libavcodec52 4:0.6.6-0ubuntu0.11.04.1 libavformat52 4:0.6.6-0ubuntu0.11.04.1
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-1478-1 CVE-2011-3929, CVE-2011-3936, CVE-2011-3940, CVE-2011-3945, CVE-2011-3947, CVE-2011-3951, CVE-2011-3952, CVE-2011-4031, CVE-2012-0848, CVE-2012-0850, CVE-2012-0851, CVE-2012-0852, CVE-2012-0853, CVE-2012-0858, CVE-2012-0859, CVE-2012-0947
Package Information: https://launchpad.net/ubuntu/+source/libav/4:0.8.3-0ubuntu0.12.04.1 https://launchpad.net/ubuntu/+source/libav/4:0.7.6-0ubuntu0.11.10.1 https://launchpad.net/ubuntu/+source/libav/4:0.6.6-0ubuntu0.11.04.1
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