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Ubuntu: 1710-2 Urgent: libav Service Disruption and Remote Code Execution

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Calendar Grey January 28, 2013
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The Ubuntu Security Notice USN-1705-1 discusses vulnerabilities in Libav, outlining their potential security risks and providing essential update instructions.
Libav could be made to crash or run programs as your login if it opened a specially crafted file.

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.

Topics%20covered

Topics Covered

security advisory code execution Ubuntu Denial of Service libav media file issue

Update Instructions

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

Ubuntu 12.10:
  libavcodec53                    6:0.8.5-0ubuntu0.12.10.1
  libavformat53                   6:0.8.5-0ubuntu0.12.10.1

Ubuntu 12.04 LTS:
  libavcodec53                    4:0.8.5-0ubuntu0.12.04.1
  libavformat53                   4:0.8.5-0ubuntu0.12.04.1

Ubuntu 11.10:
  libavcodec53                    4:0.7.6-0ubuntu0.11.10.3
  libavformat53                   4:0.7.6-0ubuntu0.11.10.3

In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-1705-1

CVE-2012-2783, CVE-2012-2791, CVE-2012-2797, CVE-2012-2798,

CVE-2012-2801, CVE-2012-2802, CVE-2012-2803, CVE-2012-2804,

CVE-2012-5144

Severity
critical
Lowest
Low
Medium
High
Critical

January 28, 2013

Topics%20covered

Topics Covered

security advisory code execution Ubuntu Denial of Service libav media file issue

Package Information

https://launchpad.net/ubuntu/+source/libav/6:0.8.5-0ubuntu0.12.10.1
https://launchpad.net/ubuntu/+source/libav/4:0.8.5-0ubuntu0.12.04.1
https://launchpad.net/ubuntu/+source/libav/4:0.7.6-0ubuntu0.11.10.3

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