The rgb2ycbcr tool in LibTIFF 4.0.6 and earlier allows remote attackers to cause a denial of service (divide-by-zero) by setting the (1) v or (2) h parameter to 0.
bugzilla.maptools.org/show_bug.cgi?id=2569
lists.opensuse.org/opensuse-updates/2016-09/msg00039.html
www.debian.org/security/2017/dsa-3762
www.openwall.com/lists/oss-security/2016/04/08/3
www.securityfocus.com/bid/85952
security.gentoo.org/glsa/201701-16