Ubuntu Security Notice USN-2866-1
8th January, 2016
firefox vulnerability
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 15.10
- Ubuntu 15.04
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS
Summary
Firefox could be made to expose sensitive information over the network.
Software description
- firefox
- Mozilla Open Source web browser
Details
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.
Update instructions
The problem can be corrected by updating your system to the following
package version:
- Ubuntu 15.10:
firefox
43.0.4+build3-0ubuntu0.15.10.1
- Ubuntu 15.04:
firefox
43.0.4+build3-0ubuntu0.15.04.1
- Ubuntu 14.04 LTS:
firefox
43.0.4+build3-0ubuntu0.14.04.1
- Ubuntu 12.04 LTS:
firefox
43.0.4+build3-0ubuntu0.12.04.1
To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to restart Firefox to make
all the necessary changes.