Multiple buffer overflows in Orenosv HTTP/FTP Server 0.8.1 allow remote authenticated users to cause a denial of service (server crash) and possibly execute arbitrary code via long arguments to FTP commands such as MKD RMD or DELE which are processed by the (1) ftp_xlate_path (2) ftp_is_canonical or (3) os_fn_nativize functions or (4) a long SSI command that is processed by the parse_cmd function in cgissi.exe.