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Ubuntu Security Notice USN-1478-1

Ubuntu Security Notice USN-1478-1
Posted Jun 18, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1478-1 - 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. 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. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary
systems | linux, ubuntu
advisories | 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, 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
MD5 | 829135b137230d4454a357fdca18a6d1

Ubuntu Security Notice USN-1478-1

Change Mirror Download
============================================================================
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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