=========================================================================Ubuntu Security Notice USN-2903-1
February 17, 2016

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

- Ubuntu 15.10
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS

Summary:

NSS could be made to expose sensitive information.

Software Description:
- nss: Network Security Service library

Details:

Hanno Böck discovered that NSS incorrectly handled certain division
functions, possibly leading to cryptographic weaknesses. (CVE-2015-1938)

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:
  libnss3                         2:3.21-0ubuntu0.15.10.1

Ubuntu 14.04 LTS:
  libnss3                         2:3.21-0ubuntu0.14.04.1

Ubuntu 12.04 LTS:
  libnss3                         2:3.21-0ubuntu0.12.04.1

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
changes.

References:
  https://ubuntu.com/security/notices/USN-2903-1
  CVE-2016-1938

Package Information:
  https://launchpad.net/ubuntu/+source/nss/2:3.21-0ubuntu0.15.10.1
  https://launchpad.net/ubuntu/+source/nss/2:3.21-0ubuntu0.14.04.1
  https://launchpad.net/ubuntu/+source/nss/2:3.21-0ubuntu0.12.04.1