The krb5ldapgetpasswordpolicyfromdn function in plugins/kdb/ldap/libkdbldap/ldappwd_policy.c in MIT Kerberos 5 (aka krb5) before 1.13.1, when the KDC uses LDAP, allows remote authenticated users to cause a denial of service (daemon crash) via a successful LDAP query with no results, as demonstrated by using an incorrect object type for a password policy.