A security issue affects the following Ubuntu releases:
This advisory also applies to the corresponding versions of
Kubuntu, Edubuntu, and Xubuntu.
The problem can be corrected by upgrading your system to the
following package versions:
After a standard system upgrade you need to restart your session to
effect the necessary changes.
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.