The remote host is missing an update to the system as announced in the referenced advisory.

Update your system with the appropriate patches or software upgrades. http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2011-003.txt http://www.vuxml.org/freebsd/7edac52a-66cd-11e0-9398-5d45f3aa24f0.html

The following package is affected: krb5 CVE-2011-0284 Double free vulnerability in the prepare_error_as function in do_as_req.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.7 through 1.9, when the PKINIT feature is enabled, allows remote attackers to cause a denial of service (daemon crash) or possibly execute arbitrary code via an e_data field containing typed data.