krb5: KDC denial of service vulnerabilities (MITKRB5-SA-2011-006)

The kdbldap plugin in the Key Distribution Center KDC in MIT Kerberos 5 aka krb5 1.9 through 1.9.1, when the LDAP back end is used, allows remote attackers to cause a denial of service NULL pointer dereference and daemon crash via a kinit operation with incorrect string case for the realm, relate...