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Ubuntu Security Notice USN-1862-1
June 05, 2013

libxrandr, libxrandr-lts-quantal vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 13.04
- Ubuntu 12.10
- Ubuntu 12.04 LTS

Summary:

Several security issues were fixed in libxrandr.

Software Description:
- libxrandr: X11 RandR extension library
- libxrandr-lts-quantal: X11 RandR extension library

Details:

Ilja van Sprundel discovered multiple security issues in various X.org
libraries and components. An attacker could use these issues to cause
applications to crash, resulting in a denial of service, or possibly
execute arbitrary code.

Update instructions:

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

Ubuntu 13.04:
  libxrandr2                      2:1.4.0-1ubuntu1.1

Ubuntu 12.10:
  libxrandr2                      2:1.4.0-1ubuntu0.1

Ubuntu 12.04 LTS:
  libxrandr-ltsq2                 2:1.4.0-1~precise2
  libxrandr2                      2:1.3.2-2ubuntu0.2

After a standard system update you need to restart your session to make all
all the necessary changes.

References:
  http://www.ubuntu.com/usn/usn-1862-1
  CVE-2013-1986

Package Information:
  https://launchpad.net/ubuntu/+source/libxrandr/2:1.4.0-1ubuntu1.1
  https://launchpad.net/ubuntu/+source/libxrandr/2:1.4.0-1ubuntu0.1
  https://launchpad.net/ubuntu/+source/libxrandr/2:1.3.2-2ubuntu0.2

https://launchpad.net/ubuntu/+source/libxrandr-lts-quantal/2:1.4.0-1~precise2