Debian Security Advisory DSA-567-1. This details which versions of libtiff are affected by issues where specially crafted TIFF graphics could cause a vulnerable client to execute arbitrary code or crash.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/34652/DSA-561-1-tiff–heap-overflows
Source: https://packetstormsecurity.com/files/34652/DSA-561-1-tiff-heap-overflows.html