USN-2063-1: NSS vulnerability

20 December 2013

Fraudulent security certificates could allow sensitive information to be exposed when accessing the Internet.



  • nss - Network Security Service library


It was discovered that an intermediate certificate was incorrectly issued
by a subordinate certificate authority of a trusted CA included in NSS.
This intermediate certificate could be used in a man-in-the-middle attack,
and has such been marked as untrusted in this update.

Update instructions

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

Ubuntu 13.10
Ubuntu 13.04
Ubuntu 12.10
Ubuntu 12.04
Ubuntu 10.04

After a standard system update you need to restart any applications that
use NSS, such as Evolution and Chromium, to make all the necessary changes.