The LZWEncode function in tif_lzw.c in the bmp2tiff tool in LibTIFF 4.0.6 and earlier, when the -c lzw option is used, allows remote attackers to cause a denial of service (buffer over-read) via a crafted BMP image. http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-3621
