USN-1540-1: NSS vulnerability
16 August 2012
nss vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 11.10
- Ubuntu 11.04
- Ubuntu 10.04 LTS
Summary
NSS could be made to crash if it opened a specially crafted certificate.
Software Description
- nss - Network Security Service library
Details
Kaspar Brand discovered a vulnerability in how the Network Security Services (NSS) ASN.1 decoder handles zero length items. If the user were tricked into opening a specially crafted certificate, an attacker could possibly exploit this to cause a denial of service via application crash.
Update instructions
The problem can be corrected by updating your system to the following package versions:
- Ubuntu 11.10
- libnss3-1d - 3.12.9+ckbi-1.82-0ubuntu6.1
- Ubuntu 11.04
- libnss3-1d - 3.12.9+ckbi-1.82-0ubuntu2.2
- Ubuntu 10.04 LTS
- libnss3-1d - 3.12.9+ckbi-1.82-0ubuntu0.10.04.4
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, to make all the necessary changes.