imagemagick 6.8.9.6 has remote DOS via infinite loop
https://security-tracker.debian.org/tracker/CVE-2014-8561
http://www.openwall.com/lists/oss-security/2014/10/31/3
http://seclists.org/fulldisclosure/2014/Nov/1
http://packetstormsecurity.com/files/128944/ImageMagick-Out-Of-Bounds-Read-Heap-Overflow.html