[USN-3063-1] Fontconfig vulnerability

Marc Deslauriers marc.deslauriers at canonical.com
Wed Aug 17 17:25:22 UTC 2016

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


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

Software Description:
- fontconfig: generic font configuration library


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.


Package Information:

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