The eDirectory Host Environment service (dhost.exe) in Novell eDirectory 8.8.2 allows remote attackers to cause a denial of service (CPU consumption) via a long HTTP HEAD request to TCP port 8028.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2008-1777
http://www.vupen.com/english/advisories/2008/1075
http://www.securitytracker.com/id?1019783
http://www.securityfocus.com/bid/28572