USN-365-1: libksba vulnerability

16 October 2006

libksba vulnerability

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

  • Ubuntu 5.04

Software Description


A parsing failure was discovered in the handling of X.509 certificates that contained extra trailing data. Malformed or malicious certificates could cause services using libksba to crash, potentially creating a denial of service.

Update instructions

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

Ubuntu 5.04
libksba8 - 0.9.9-2ubuntu0.5.04

To update your system, please follow these instructions:

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