USN-2924-1: NSS vulnerability

9 March 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


NSS could be made to crash or run programs if it received specially crafted input.

Software Description

  • nss - Network Security Service library


Francis Gabriel discovered that NSS incorrectly handled decoding certain ASN.1 data. An remote attacker could use this issue to cause NSS to crash, resulting in a denial of service, or possibly execute arbitrary code.

Update instructions

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

Ubuntu 15.10
libnss3 - 2:3.21-0ubuntu0.15.10.2
Ubuntu 14.04 LTS
libnss3 - 2:3.21-0ubuntu0.14.04.2
Ubuntu 12.04 LTS
libnss3 - 2:3.21-0ubuntu0.12.04.3

To update your system, please follow these 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.