A null pointer dereference issue was found in Libtiff's tif_dir.c file. This issue may allow an attacker to pass a crafted TIFF image file to the tiffcp utility which triggers a runtime error that causes undefined behavior. This will result in an application crash, eventually leading to a denial of service.
https://security.netapp.com/advisory/ntap-20230731-0004/
https://lists.debian.org/debian-lts-announce/2023/07/msg00034.html
https://gitlab.com/libtiff/libtiff/-/merge_requests/479
https://gitlab.com/libtiff/libtiff/-/commit/9bd48f0dbd64fb94dc2b5b05238fde0bfdd4ff3f