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Ubuntu Security Notice USN-2534-1
March 17, 2015

libav vulnerabilities

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

• Ubuntu 12.04 LTS

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:

It was discovered that Libav incorrectly handled certain malformed media
files. If a user were tricked into opening a crafted media 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.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 12.04 LTS:
libavcodec53 4:0.8.17-0ubuntu0.12.04.1
libavformat53 4:0.8.17-0ubuntu0.12.04.1

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-2534-1
CVE-2014-8542, CVE-2014-8543, CVE-2014-8544, CVE-2014-8547,
CVE-2014-8548, CVE-2014-9604

Package Information:
https://launchpad.net/ubuntu/+source/libav/4:0.8.17-0ubuntu0.12.04.1

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