Ubuntu Security Notice USN-2343-1
9th September, 2014
nss vulnerability
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS
- Ubuntu 10.04 LTS
Summary
NSS could be made to crash or run programs as your login if it processed a
specially crafted certificate.
Software description
- nss
– Network Security Service library
Details
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.
Update instructions
The problem can be corrected by updating your system to the following
package version:
- Ubuntu 14.04 LTS:
-
libnss3
2:3.15.4-1ubuntu7.1
- Ubuntu 12.04 LTS:
-
libnss3
3.15.4-0ubuntu0.12.04.3
- Ubuntu 10.04 LTS:
-
libnss3-1d
3.15.4-0ubuntu0.10.04.3
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.