USN-2903-1: NSS vulnerability

17 February 2016

NSS could be made to expose sensitive information.



  • nss - Network Security Service library


Hanno Böck discovered that NSS incorrectly handled certain division
functions, possibly leading to cryptographic weaknesses. (CVE-2016-1938)

This update also refreshes the NSS package to version 3.21 which includes
the latest CA certificate bundle, and removes the SPI CA.

Update instructions

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

Ubuntu 15.10
Ubuntu 14.04
Ubuntu 12.04

This update uses a new upstream release, which includes additional bug
fixes. After a standard system update you need to restart any applications
that use NSS, such as Evolution and Chromium, to make all the necessary


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