The xwd file handler in ImageMagick allows remote attackers to cause a denial of service (segmentation fault and application crash) via a malformed xwd file.
www.openwall.com/lists/oss-security/2014/12/24/1
www.openwall.com/lists/oss-security/2016/06/02/13
anonscm.debian.org/cgit/collab-maint/imagemagick.git/commit/?h=debian-patches/6.8.9.9-4-for-upstream&id=82a5bbdd47b9b3f43ce3c2aa18741aecc4a0f962
anonscm.debian.org/cgit/collab-maint/imagemagick.git/commit/?h=debian-patches/6.8.9.9-4-for-upstream&id=914da276f717b3e21e5af6614887af14af87a9b8
bugzilla.redhat.com/show_bug.cgi?id=1343467