httpd: NULL pointer defer in mod_proxy_ftp caused by crafted EPSV and PASV reply

The approxyftphandler function in modules/proxy/proxyftp.c in the modproxyftp module in the Apache HTTP Server 2.0.63 and 2.2.13 allows remote FTP servers to cause a denial of service NULL pointer dereference and child process crash via a malformed reply to an EPSV command...