An exploitable heap based buffer overflow exists in the handling of compressed TIFF images in LibTIFF's PixarLogDecode api. A crafted TIFF document can lead to a heap based buffer overflow resulting in remote code execution. The vulnerability can be triggered through any user controlled TIFF that is handled by this functionality. http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5875
