Bundled version of libav in gstreamer-ffmpeg contains a number of vulnerabilities.

Multiple vulnerabilities has been found and corrected in ffmpeg :

The Matroska format decoder in FFmpeg does not properly allocate memory, which allows remote attackers to execute arbitrary code via a crafted file (CVE-2011-3362, CVE-2011-3504).

cavsdec.c in libavcodec in FFmpeg allows remote attackers to cause a denial of service (incorrect write operation and application crash) via an invalid bitstream in a Chinese AVS video (aka CAVS) file, related to the decode_residual_block, check_for_slice, and cavs_decode_frame functions, a different vulnerability than CVE-2011-3362 (CVE-2011-3973).

Integer signedness error in the decode_residual_inter function in cavsdec.c in libavcodec in FFmpeg allows remote attackers to cause a denial of service (incorrect write operation and application crash) via an invalid bitstream in a Chinese AVS video (aka CAVS) file, a different vulnerability than CVE-2011-3362 (CVE-2011-3974).

Double free vulnerability in the Theora decoder in FFmpeg allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted stream (CVE-2011-3892).

FFmpeg does not properly implement the MKV and Vorbis media handlers, which allows remote attackers to cause a denial of service (out-of-bounds read) via unspecified vectors (CVE-2011-3893).

Heap-based buffer overflow in the Vorbis decoder in FFmpeg allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted stream (CVE-2011-3895).

An error within the QDM2 decoder (libavcodec/qdm2.c) can be exploited to cause a buffer overflow (CVE-2011-4351).

An integer overflow error within the 'vp3_dequant()' function (libavcodec/vp3.c) can be exploited to cause a buffer overflow (CVE-2011-4352).

Errors within the 'av_image_fill_pointers()', the 'vp5_parse_coeff()', and the 'vp6_parse_coeff()' functions can be exploited to trigger out-of-bounds reads (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).

It was 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).

Multiple input validations in the decoders/ demuxers for Westwood Studios VQA, Apple MJPEG-B, Theora, Matroska, Vorbis, Sony ATRAC3, DV, NSV, files could lead to the execution of arbitrary code (CVE-2011-3929, CVE-2011-3936, CVE-2011-3937, CVE-2011-3940, CVE-2011-3945, CVE-2011-3947, CVE-2012-0853, CVE-2012-0858).

The updated packages have been upgraded to the 0.7.12 version where these issues has been corrected.

Ubuntu Security Notice USN-1320-1 reports :

Phillip Langlois discovered that FFmpeg 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 FFmpeg 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 FFmpeg 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 FFmpeg 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 FFmpeg 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)

Multiple vulnerabilities has been found and corrected in ffmpeg :

The Matroska format decoder in FFmpeg does not properly allocate memory, which allows remote attackers to execute arbitrary code via a crafted file (CVE-2011-3362, CVE-2011-3504).

cavsdec.c in libavcodec in FFmpeg allows remote attackers to cause a denial of service (incorrect write operation and application crash) via an invalid bitstream in a Chinese AVS video (aka CAVS) file, related to the decode_residual_block, check_for_slice, and cavs_decode_frame functions, a different vulnerability than CVE-2011-3362 (CVE-2011-3973).

Integer signedness error in the decode_residual_inter function in cavsdec.c in libavcodec in FFmpeg allows remote attackers to cause a denial of service (incorrect write operation and application crash) via an invalid bitstream in a Chinese AVS video (aka CAVS) file, a different vulnerability than CVE-2011-3362 (CVE-2011-3974).

Double free vulnerability in the Theora decoder in FFmpeg allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted stream (CVE-2011-3892).

FFmpeg does not properly implement the MKV and Vorbis media handlers, which allows remote attackers to cause a denial of service (out-of-bounds read) via unspecified vectors (CVE-2011-3893).

Heap-based buffer overflow in the Vorbis decoder in FFmpeg allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted stream (CVE-2011-3895).

An error within the QDM2 decoder (libavcodec/qdm2.c) can be exploited to cause a buffer overflow (CVE-2011-4351).

An integer overflow error within the 'vp3_dequant()' function (libavcodec/vp3.c) can be exploited to cause a buffer overflow (CVE-2011-4352).

Errors within the 'av_image_fill_pointers()', the 'vp5_parse_coeff()', and the 'vp6_parse_coeff()' functions can be exploited to trigger out-of-bounds reads (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).

It was 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).

The updated packages have been upgraded to the 0.6.5 version where these issues has been corrected.

Steve Manzuik discovered that FFmpeg 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. (CVE-2011-3504)

Phillip Langlois discovered that FFmpeg 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 FFmpeg 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. This issue only affected Ubuntu 10.10.
(CVE-2011-4352)

Phillip Langlois discovered that FFmpeg 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 FFmpeg 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 FFmpeg 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).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

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).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote host is affected by the vulnerability described in GLSA-201310-12 (FFmpeg: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in FFmpeg. Please review       the CVE identifiers and FFmpeg changelogs referenced below for details.
  Impact :

    A remote attacker could entice a user to open a specially crafted media       file, possibly leading to the execution of arbitrary code with the       privileges of the user running the application or a Denial of Service.
  Workaround :

    There is no known workaround at this time.

ID	Name	Product	Family	Published	Updated	Severity
69412	FreeBSD : gstreamer-ffmpeg -- Multiple vulnerabilities in bundled libav (4d087b35-0990-11e3-a9f4-bcaec565249c)	Nessus	FreeBSD Local Security Checks	8/21/2013	1/6/2021	critical
61951	Mandriva Linux Security Advisory : ffmpeg (MDVSA-2012:076)	Nessus	Mandriva Local Security Checks	9/6/2012	1/6/2021	critical
57553	FreeBSD : ffmpeg -- multiple vulnerabilities (ea2ddc49-3e8e-11e1-8095-5404a67eef98)	Nessus	FreeBSD Local Security Checks	1/16/2012	1/6/2021	high
59096	Mandriva Linux Security Advisory : ffmpeg (MDVSA-2012:075)	Nessus	Mandriva Local Security Checks	5/15/2012	1/6/2021	high
57449	Ubuntu 10.04 LTS / 10.10 : ffmpeg vulnerabilities (USN-1320-1)	Nessus	Ubuntu Local Security Checks	1/6/2012	9/19/2019	high
57588	Ubuntu 11.04 / 11.10 : libav vulnerabilities (USN-1333-1)	Nessus	Ubuntu Local Security Checks	1/18/2012	9/19/2019	high
70647	GLSA-201310-12 : FFmpeg: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	10/27/2013	1/6/2021	critical

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