Ubuntu Security Notice USN-2864-1
7th January, 2016
A security issue affects these releases of Ubuntu and its
- Ubuntu 15.10
- Ubuntu 15.04
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS
NSS could be made to expose sensitive information over the network.
– Network Security Service library
Karthikeyan Bhargavan and Gaetan Leurent discovered that NSS incorrectly
allowed MD5 to be used for TLS 1.2 connections. If a remote attacker were
able to perform a man-in-the-middle attack, this flaw could be exploited to
view sensitive information.
The problem can be corrected by updating your system to the following
- Ubuntu 15.10:
- Ubuntu 15.04:
- Ubuntu 14.04 LTS:
- Ubuntu 12.04 LTS:
To update your system, please follow these instructions:
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.