USN-3063-1: Fontconfig vulnerability

Ubuntu Security Notice USN-3063-1

17th August, 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 version:

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

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

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

References

CVE-2016-5384

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