child process exits with an error (MITKRB5-SA-2011-001), a hang or crash
in the KDC when using the LDAP kdb backend, and an uninitialized pointer
use in the KDC (MITKRB5-SA-2011-002) (CVE-2010-4022, #664009,
CVE-2011-0281, #668719, CVE-2011-0282, #668726, CVE-2011-0283, #670567)
