Two errors in the asn1_find_node() function (lib/parser_aux.c) within GnuTLS libtasn1 version 4.10 can be exploited to cause a stacked-based buffer overflow by tricking a user into processing a specially crafted assignments file via the e.g. asn1Coding utility. https://nvd.nist.gov/vuln/detail/CVE-2017-6891
