Fraudulent security certificates could allow sensitive information to be exposed when accessing the Internet.
It was discovered that pyOpenSSL did not properly handle certificates with NULL characters in the Subject Alternative Name field. An attacker could exploit this to perform a man in the middle attack to view sensitive information or alter encrypted communications.
23 September 2013
A security issue affects these releases of Ubuntu and its derivatives:
Fraudulent security certificates could allow sensitive information to be exposed when accessing the Internet.
It was discovered that pyOpenSSL did not properly handle certificates with NULL characters in the Subject Alternative Name field. 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.
In general, a standard system update will make all the necessary changes.
Vulmon