Uočeno je i ispravljeno više sigurnosnih propusta u radu programskog paketa FFmpeg. Udaljeni je napadač spomenute nedostatke mogao iskoristiti za DoS (eng. Denial of Service) napad te proizvoljno izvršavanje programskog koda.

==========================================================================
Ubuntu Security Notice USN-1479-1
June 18, 2012

ffmpeg vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 10.04 LTS

Summary:

FFmpeg could be made to crash or run programs as your login if it
opened a specially crafted file.

Software Description:
- ffmpeg: multimedia player, server and encoder

Details:

Mateusz Jurczyk and Gynvael Coldwind discovered that FFmpeg 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. (CVE-2011-3929, CVE-2011-3936)

Mateusz Jurczyk and Gynvael Coldwind discovered that FFmpeg 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. (CVE-2011-3940)

Mateusz Jurczyk and Gynvael Coldwind discovered that FFmpeg 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. (CVE-2011-3947)

Mateusz Jurczyk and Gynvael Coldwind discovered that FFmpeg 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. (CVE-2011-3951)

Mateusz Jurczyk and Gynvael Coldwind discovered that FFmpeg 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. (CVE-2011-3952)

It was discovered that FFmpeg 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 FFmpeg 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. (CVE-2012-0852)

It was discovered that FFmpeg 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. (CVE-2012-0853)

It was discovered that FFmpeg 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. (CVE-2012-0858)

It was discovered that FFmpeg 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. (CVE-2012-0859)

Fabian Yamaguchi discovered that FFmpeg 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 10.04 LTS:
  libavcodec52                    4:0.5.9-0ubuntu0.10.04.1
  libavformat52                   4:0.5.9-0ubuntu0.10.04.1

This update uses a new upstream release of Libav, which includes additional
bug fixes. In general, a standard system update will make all the necessary
changes.

References:
  http://www.ubuntu.com/usn/usn-1479-1
  CVE-2011-3929, CVE-2011-3936, CVE-2011-3940, CVE-2011-3947,
  CVE-2011-3951, CVE-2011-3952, 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/ffmpeg/4:0.5.9-0ubuntu0.10.04.1