HID ActivID ActivClient appears to include the JasPer library for parsing JPEG 2000 facial images that may be present on PIV cards. Older versions of JasPer have several known DoS vulnerabilities: https://blogs.gentoo.org/ago/2017/01/16/jasper-multiple-crashes-with-ubsan/ A smart card can present one of the following files as a facial image to trigger a DoS ("crash") vulnerability in ActivClient 7.1.0.202: https://github.com/asarubbo/poc/blob/master/00018-jasper-signedintoverflow-jpc_dec_c https://github.com/asarubbo/poc/blob/master/00019-jasper-leftshift-jpc_dec_c https://github.com/asarubbo/poc/blob/master/00030-jasper-leftshift-jp2_dec_c Organizations that use the ActivClient software may wish to obtain an update from HID that addresses known vulnerabilities in third party libraries.