Secunia Security Advisory – Ubuntu has issued an update for firefox and xulrunner. This fixes a vulnerability, which can be exploited by malicious people to compromise a user’s system.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/92218/sa40693.txt
Source: https://packetstormsecurity.com/files/92218/Secunia-Security-Advisory-40693.html