USN-816-1: fetchmail vulnerability

12 August 2009

fetchmail vulnerability

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

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

Software Description

  • fetchmail

Details

Matthias Andree discovered that fetchmail did not properly handle certificates with NULL characters in the certificate name. A remote attacker could exploit this to perform a man in the middle attack to view sensitive information or alter encrypted communications.

Update instructions

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

Ubuntu 9.04
fetchmail - 6.3.9~rc2-4ubuntu1.1
Ubuntu 8.10
fetchmail - 6.3.8-11ubuntu3.1
Ubuntu 8.04 LTS
fetchmail - 6.3.8-10ubuntu1.1
Ubuntu 6.06 LTS
fetchmail - 6.3.2-2ubuntu2.3

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