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Ubuntu Security Notice USN-3063-1
August 17, 2016

fontconfig vulnerability
==========================================================================

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

– Ubuntu 16.04 LTS
– Ubuntu 14.04 LTS
– Ubuntu 12.04 LTS

Summary:

Fontconfig be made to crash or run programs if it opened a specially
crafted file.

Software Description:
– fontconfig: generic font configuration library

Details:

Tobias Stoeckmann discovered that Fontconfig incorrectly handled cache
files. A local attacker could possibly use this issue with a specially
crafted cache file to elevate privileges.

Update instructions:

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

Ubuntu 16.04 LTS:
fontconfig 2.11.94-0ubuntu1.1
libfontconfig1 2.11.94-0ubuntu1.1

Ubuntu 14.04 LTS:
fontconfig 2.11.0-0ubuntu4.2
libfontconfig1 2.11.0-0ubuntu4.2

Ubuntu 12.04 LTS:
fontconfig 2.8.0-3ubuntu9.2
libfontconfig1 2.8.0-3ubuntu9.2

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

References:
http://www.ubuntu.com/usn/usn-3063-1
CVE-2016-5384

Package Information:
https://launchpad.net/ubuntu/+source/fontconfig/2.11.94-0ubuntu1.1
https://launchpad.net/ubuntu/+source/fontconfig/2.11.0-0ubuntu4.2
https://launchpad.net/ubuntu/+source/fontconfig/2.8.0-3ubuntu9.2

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