USN-2903-2: NSS regression

Ubuntu Security Notice USN-2903-2

23rd February, 2016

nss regression

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

• Ubuntu 12.04 LTS

Summary

USN-2903-1 introduced a regression in NSS.

Software description

• nss - Network Security Service library

Details

USN-2903-1 fixed a vulnerability in NSS. An incorrect package versioning
change in Ubuntu 12.04 LTS caused a regression when building software
against NSS. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

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 version:

Ubuntu 12.04 LTS:

libnss3-dev 2:3.21-0ubuntu0.12.04.2

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

In general, a standard system update will make all the necessary changes.

References

LP: 1547147