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==========================================================================
Ubuntu Security Notice USN-1207-1
September 14, 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

Summary:

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

Details:

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

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

References:
  http://www.ubuntu.com/usn/usn-1207-1
  CVE-2011-2896, CVE-2011-3170

Package Information:
  https://launchpad.net/ubuntu/+source/cups/1.4.6-5ubuntu1.4
  https://launchpad.net/ubuntu/+source/cups/1.4.4-6ubuntu2.4
  https://launchpad.net/ubuntu/+source/cups/1.4.3-1ubuntu1.5
  https://launchpad.net/ubuntu/+source/cupsys/1.3.7-1ubuntu3.13


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