USN-856-1: CUPS vulnerability

Ubuntu Security Notice USN-856-1

10th 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 version:

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.