LibTIFF 4.0.7 allows remote attackers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact via a crafted TIFF image, related to "WRITE of size 2048" and libtiff/tif_next.c:64:9.
https://github.com/vadz/libtiff/commit/9657bbe3cdce4aaa90e07d50c1c70ae52da0ba6a
https://blogs.gentoo.org/ago/2017/01/01/libtiff-multiple-heap-based-buffer-overflow/