Ubuntu Security Notice USN-2838-1
16th December, 2015
cups-filters vulnerability
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 15.10
- Ubuntu 15.04
- Ubuntu 14.04 LTS
Summary
cups-filters could be made to run programs as the lp user if it processed a
specially crafted print job.
Software description
- cups-filters
- OpenPrinting CUPS Filters
Details
Adam Chester discovered that the cups-filters foomatic-rip filter
incorrectly stripped shell escape characters. A remote attacker could
possibly use this issue to execute arbitrary code as the lp user.
Update instructions
The problem can be corrected by updating your system to the following
package version:
- Ubuntu 15.10:
cups-filters
1.0.76-1ubuntu0.2
- Ubuntu 15.04:
cups-filters
1.0.67-0ubuntu2.6
- Ubuntu 14.04 LTS:
cups-filters
1.0.52-0ubuntu1.7
To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.