=========================================================================Ubuntu Security Notice USN-2063-1
December 20, 2013

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

- Ubuntu 13.10
- Ubuntu 13.04
- Ubuntu 12.10
- Ubuntu 12.04 LTS
- Ubuntu 10.04 LTS

Summary:

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

Software Description:
- nss: Network Security Service library

Details:

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:
  libnss3                         2:3.15.3.1-0ubuntu0.13.10.1

Ubuntu 13.04:
  libnss3                         2:3.15.3.1-0ubuntu0.13.04.1

Ubuntu 12.10:
  libnss3                         3.15.3.1-0ubuntu0.12.10.1

Ubuntu 12.04 LTS:
  libnss3                         3.15.3.1-0ubuntu0.12.04.1

Ubuntu 10.04 LTS:
  libnss3-1d                      3.15.3.1-0ubuntu0.10.04.1

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.

References:
  
  https://bugs.launchpad.net/ubuntu/+source/nss/+bug/1263135

Package Information:
  https://launchpad.net/ubuntu/+source/nss/2:3.15.3.1-0ubuntu0.13.10.1
  https://launchpad.net/ubuntu/+source/nss/2:3.15.3.1-0ubuntu0.13.04.1
  https://launchpad.net/ubuntu/+source/nss/3.15.3.1-0ubuntu0.12.10.1
  https://launchpad.net/ubuntu/+source/nss/3.15.3.1-0ubuntu0.12.04.1
  https://launchpad.net/ubuntu/+source/nss/3.15.3.1-0ubuntu0.10.04.1