USN-1207-1: CUPS vulnerabilities

Ubuntu Security Notice USN-1207-1

14th 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(tm) - server
  • cupsys - Common UNIX Printing System(tm) - 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 version:

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.


CVE-2011-2896, CVE-2011-3170