Secunia Security Advisory – FreeBSD has issued an update for zlib. This fixes a vulnerability, which can be exploited by malicious people to cause a DoS (Denial of Service) against a vulnerable application.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/38887/sa16243.txt
Source: https://packetstormsecurity.com/files/38887/Secunia-Security-Advisory-16243.html