Secunia Security Advisory – Ubuntu has issued an update for nss. This fixes some vulnerabilities, which can be exploited by malicious people to bypass certain security restrictions or compromise a vulnerable system.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/80018/sa36139.txt
Source: https://packetstormsecurity.com/files/80018/Secunia-Security-Advisory-36139.html

