NSS could be made to crash or run programs as your login if it processed a specially crafted certificate.
Tyson Smith and Jesse Schwartzentruber discovered that NSS contained a race condition when performing certificate validation. An attacker could use this issue to cause NSS to crash, resulting in a denial of service, or possibly execute arbitrary code.
9 September 2014
A security issue affects these releases of Ubuntu and its derivatives:
NSS could be made to crash or run programs as your login if it processed a specially crafted certificate.
Tyson Smith and Jesse Schwartzentruber discovered that NSS contained a race condition when performing certificate validation. An attacker could use this issue to cause NSS to crash, resulting in a denial of service, or possibly execute arbitrary code.
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
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.
Vulmon