An issue in libtiff 85f2ac8e0b01cb7db2bbecf4a3b891bdbef67938 allows an attacker to execute arbitrary code via the process_command_opts() function in tools/tiffcrop.c
https://gitlab.com/libtiff/libtiff/-/work_items/846
https://gist.github.com/okyfh/122c2d72e991a78c8af80a3af3be8671