USN-1207-1: CUPS vulnerabilities

14 September 2011

cups, cupsys vulnerabilities

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

  • Ubuntu 11.04
  • Ubuntu 10.10
  • Ubuntu 10.04 LTS
  • Ubuntu 8.04 LTS


An attacker could send crafted print jobs to CUPS and cause it to crash or run programs.

Software Description

  • cups - Common UNIX Printing System™ - server
  • cupsys - Common UNIX Printing System™ - server


Tomas Hoger discovered that the CUPS image library incorrectly handled LZW streams. A remote attacker could use this flaw to cause 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 11.04
libcupsimage2 - 1.4.6-5ubuntu1.4
Ubuntu 10.10
libcupsimage2 - 1.4.4-6ubuntu2.4
Ubuntu 10.04 LTS
libcupsimage2 - 1.4.3-1ubuntu1.5
Ubuntu 8.04 LTS
libcupsimage2 - 1.3.7-1ubuntu3.13

To update your system, please follow these instructions:

In general, a standard system update will make all the necessary changes.