The ReadVICARImage function in coders/vicar.c in ImageMagick 6.x before 6.9.0-5 Beta allows remote attackers to cause a denial of service (infinite loop) via a crafted VICAR file.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2015-8759
https://bugzilla.redhat.com/show_bug.cgi?id=1195271
http://www.openwall.com/lists/oss-security/2016/06/06/2
http://www.openwall.com/lists/oss-security/2015/02/26/13
http://www.imagemagick.org/discourse-server/viewtopic.php?f=3&t=26933