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://www.pdc.kth.se/heimdal/advisory/2004-04-01/ http://www.vuxml.org/freebsd/bfb36941-84fa-11d8-a41f-0020ed76ef5a.html

The following package is affected: heimdal CVE-2004-0371 Heimdal 0.6.x before 0.6.1 and 0.5.x before 0.5.3 does not properly perform certain consistency checks for cross-realm requests, which allows remote attackers with control of a realm to impersonate others in the cross-realm trust path.