USN-539-1: CUPS vulnerability

6 November 2007

cupsys vulnerability

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

  • Ubuntu 7.10
  • Ubuntu 7.04
  • Ubuntu 6.10
  • Ubuntu 6.06 LTS

Software Description

  • cupsys

Details

Alin Rad Pop discovered that CUPS did not correctly validate buffer lengths when processing IPP tags. Remote attackers successfully exploiting this vulnerability would gain access to the non-root CUPS user in Ubuntu 6.06 LTS, 6.10, and 7.04. In Ubuntu 7.10, attackers would be isolated by the AppArmor CUPS profile.

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 7.10
cupsys - 1.3.2-1ubuntu7.1
Ubuntu 7.04
cupsys - 1.2.8-0ubuntu8.1
Ubuntu 6.10
cupsys - 1.2.4-2ubuntu3.1
Ubuntu 6.06 LTS
cupsys - 1.2.2-0ubuntu0.6.06.4

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

In general, a standard system upgrade is sufficient to effect the necessary changes.

References