MIT Kerberos 5 (aka krb5) before 1.17.2 and 1.18.x before 1.18.3 allows unbounded recursion via an ASN.1-encoded Kerberos message because the lib/krb5/asn.1/asn1_encode.c support for BER indefinite lengths lacks a recursion limit. CREATE(Triage):(User=admin) [CVE-2020-28196|https://nvd.nist.gov/vuln/detail/CVE-2020-28196]