1. Ubuntu Security Notices
  2. USN-2864-1

USN-2864-1: NSS vulnerability

Publication date

7 January 2016

Overview

NSS could be made to expose sensitive information over the network.

Releases

Packages

  • nss - Network Security Service library

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 machine-in-the-middle attack, this flaw could be exploited to
view sensitive information.

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 machine-in-the-middle attack, this flaw could be exploited to
view sensitive information.

Update 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.

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
15.10 wily libnss3 –  2:3.19.2.1-0ubuntu0.15.10.2
15.04 vivid libnss3 –  2:3.19.2.1-0ubuntu0.15.04.2
14.04 trusty libnss3 –  2:3.19.2.1-0ubuntu0.14.04.2
12.04 precise libnss3 –  3.19.2.1-0ubuntu0.12.04.2

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References

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