Hosting Controller 6.1 before Hotfix 3.3 allows remote attackers to (1) delete the virtual directory of an arbitrary site via a modified ForumID parameter in a disableforum action in DisableForum.asp and (2) create an arbitrary forum virtual directory via an empty ForumID parameter in an enableforum action in EnableForum.asp.
http://www.vupen.com/english/advisories/2006/4296
http://www.securityfocus.com/archive/1/449937/100/0/threaded