https://www.exploit-db.com/exploits/22143

漏洞细节尚未披露

source: http://www.securityfocus.com/bid/6585/info

WebWeaver's FTP component has a flaw which can permit a remote user to create directories outside the FTP root.

By executing the mkdir command on an ftp server with dot-dot-slash (..) directory traversal notation, an attacker can create a directory outside of the FTP root. 

mkdir ..[directoryname]