It was discovered that KDE did not properly handle certificates with NULL characters in the Subject Alternative Name field of X.509 certificates. An attacker could exploit this to perform a man in the middle attack to view sensitive information or alter encrypted communications.
The problem can be corrected by updating your system to the following package versions:
17 September 2009
A security issue affects these releases of Ubuntu and its derivatives:
It was discovered that KDE did not properly handle certificates with NULL characters in the Subject Alternative Name field of X.509 certificates. An attacker could exploit this to perform a man in the middle attack to view sensitive information or alter encrypted communications.
The problem can be corrected by updating your system to the following package versions:
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.
Vulmon