A flaw was found in MIT krb5 1.6 or later, an authenticated kadmin user with permission to add principals to an LDAP Kerberos database can cause a null dereference in kadmind, or circumvent a DN container check, by supplying tagged data intended to be internal to the database module.

Reference: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=891869

Upstream patch: https://github.com/krb5/krb5/commit/e1caf6fb74981da62039846931ebdffed71309d1

Cross-site scripting (XSS) vulnerability in the keyify function in mistune.py in Mistune before 0.8.1 allows remote attackers to inject arbitrary web script or HTML by leveraging failure to escape the "key" argument.

In MIT Kerberos 5 (aka krb5) 1.7 and later, an authenticated attacker can cause a KDC assertion failure by sending invalid S4U2Self or S4U2Proxy requests.