GnuTLS incorrectly validated certain intermediate certificates.
Suman Jana discovered that GnuTLS incorrectly handled version 1 intermediate certificates. This resulted in them being considered to be a valid CA certificate by default, which was contrary to documented behaviour.
25 February 2014
A security issue affects these releases of Ubuntu and its derivatives:
GnuTLS incorrectly validated certain intermediate certificates.
Suman Jana discovered that GnuTLS incorrectly handled version 1 intermediate certificates. This resulted in them being considered to be a valid CA certificate by default, which was contrary to documented behaviour.
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.
In general, a standard system update will make all the necessary changes.
Vulmon