USN-2791-1: NSS vulnerabilities

4 November 2015

nss vulnerabilities

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

  • Ubuntu 15.10
  • Ubuntu 15.04
  • 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


Tyson Smith and David Keeler 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:
Ubuntu 15.04
libnss3 - 2:
Ubuntu 14.04 LTS
libnss3 - 2:
Ubuntu 12.04 LTS
libnss3 -

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.