USN-856-1: CUPS vulnerability

10 November 2009

cups, cupsys vulnerability

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

  • Ubuntu 9.10
  • Ubuntu 9.04
  • Ubuntu 8.10
  • Ubuntu 8.04 LTS
  • Ubuntu 6.06 LTS

Software Description

  • cups
  • cupsys


Aaron Sigel discovered that the CUPS web interface incorrectly protected against cross-site scripting (XSS) and cross-site request forgery (CSRF) attacks. If an authenticated user were tricked into visiting a malicious website while logged into CUPS, a remote attacker could modify the CUPS configuration and possibly steal confidential data.

Update instructions

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

Ubuntu 9.10
cups - 1.4.1-5ubuntu2.1
Ubuntu 9.04
cups - 1.3.9-17ubuntu3.4
Ubuntu 8.10
cups - 1.3.9-2ubuntu9.3
Ubuntu 8.04 LTS
cupsys - 1.3.7-1ubuntu3.6
Ubuntu 6.06 LTS
cupsys - 1.2.2-0ubuntu0.6.06.15

To update your system, please follow these instructions:

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