USN-740-1: NSS vulnerability

17 March 2009

nss, firefox vulnerability

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

  • Ubuntu 8.10
  • Ubuntu 8.04 LTS
  • Ubuntu 7.10
  • Ubuntu 6.06 LTS

Software Description

  • nss
  • firefox

Details

The MD5 algorithm is known not to be collision resistant. This update blacklists the proof of concept rogue certificate authority as discussed in http://www.win.tue.nl/hashclash/rogue-ca/.

Update instructions

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

Ubuntu 8.10
libnss3-1d - 3.12.0.3-0ubuntu5.8.10.1
Ubuntu 8.04 LTS
libnss3-0d - 3.12.0.3-0ubuntu0.8.04.5
libnss3-1d - 3.12.0.3-0ubuntu0.8.04.5
Ubuntu 7.10
libnss3-0d - 3.11.5-3ubuntu0.7.10.2
Ubuntu 6.06 LTS
libnss3 - 1.5.dfsg+1.5.0.15~prepatch080614k-0ubuntu2

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

After a standard system upgrade you need to restart your session to effect the necessary changes.

References