USN-2903-1: NSS vulnerability

Ubuntu Security Notice USN-2903-1

17th February, 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 version:

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

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

CVE-2016-1938