Secunia Security Advisory – Debian has issued an update for xulrunner. This fixes some vulnerabilities, which can be exploited by malicious people to conduct spoofing attacks or compromise a user’s system.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/75939/sa34383.txt
Source: https://packetstormsecurity.com/files/75939/Secunia-Security-Advisory-34383.html

