WS_FTP 5.05 XMD5 buffer overflow exploit

The internal stack may be overrun while handling either "XMD5", "XSHA1" or "XCRC" commands with an overly long filename. This condition can be exploited by attackers to ultimately execute instructions with the privileges of the WS_FTP process, typically administrator or system. Exploitation requires valid or anonymous FTP server credentials. The WS_FTP server will remain active after a successful exploitation.