Ubuntu Security Notice USN-816-1
12th 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 version:
- 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.