T07 · Tool Hijacking and Spoofing
Error
- Location
- monitor.html:406
- Finding
- Fabricated Health and Performance Telemetry Presented as Live Monitoring Data<![CDATA[ ## Vulnerability Details **File Location**: `monitor.html`, lines 251-274 and 406-439 **Related Documentation**: `SKILL.md`, lines 12-26 and 51-77 **Vulnerability Type**: Monitoring and API spoofing through fabricated telemetry **Risk Level**: High ### Vulnerable Code The interface initially presents the system as online and displays apparently valid gateway, activity, and response-time values: ```html <div class="card stat-card"> <div class="card-body"> <div class="stat-value cyan" id="systemStatus">ONLINE</div> <div class="stat-label">STATUS</div> </div> </div> <div class="card stat-card"> <div class="card-body"> <div class="stat-value green" id="gatewayStatus">98%</div> <div class="stat-label">GATEWAY</div> </div> </div> <div class="card stat-card"> <div class="card-body"> <div class="stat-value orange" id="lastActivity">12s</div> <div class="stat-label">LAST ACT</div> </div> </div> <div class="card stat-card"> <div class="card-body"> <div class="stat-value red" id="responseTime">45ms</div> <div class="stat-label">RESP TIME</div> </div> </div> ``` Although an API endpoint is declared, it is never queried. Instead, the displayed telemetry is generated randomly: ```javascript // CONFIG: Change this to your API endpoint const API_ENDPOINT = 'http://192.168.31.19:8000/healthz'; function initGraph() { const container = document.getElementById('performanceGraph'); const values = [65, 45, 78, 52, 88, 42, 71, 55, 83, 47, 76, 58]; container.innerHTML = values.map((v, i) => `<div class="graph-bar" style="height: ${v}px; animation-delay: ${i * 0.05}s"></div>` ).join(''); } function updateData() { const cpu = Math.floor(Math.random() * 40) + 30; const mem = Math.floor(Math.random() * 30) + 50; const net = Math.floor(Math.random() * 40) + 10; document.getElementById('cpuValue').textContent = cpu + '%'; d ...[truncated 3207 chars]
- Remediation
- <![CDATA[ ## Remediation Suggestions 1. Replace random telemetry generation with an authenticated request to the configured health endpoint: ```javascript async function updateData() { const controller = new AbortController(); const timeout = setTimeout(() => controller.abort(), 5000); try { const response = await fetch(API_ENDPOINT, { method: 'GET', headers: { 'Accept': 'application/json' }, signal: controller.signal, cache: 'no-store' }); if (!response.ok) { throw new Error(`Health endpoint returned ${response.status}`); } const data = await response.json(); // Validate data before updating the interface. } catch (error) { showUnavailableState(error); } finally { clearTimeout(timeout); } } ``` 2. Validate the response schema and types before using any returned fields. Reject missing, malformed, non-finite, or out-of-range values. 3. Default all operational fields to `UNKNOWN` rather than `ONLINE`. Change the display to `OFFLINE`, `UNREACHABLE`, or `INVALID RESPONSE` when the request fails, times out, or returns malformed data. 4. Derive system and gateway status exclusively from verified API data. Do not preserve a healthy status after communication has failed. 5. Remove random values, hard-coded service statuses, and sample activity records from production mode. If demonstration data is retained, label the entire interface prominently as `DEMO DATA — NOT LIVE`. 6. Display the timestamp of the last successful API response and mark data as stale after an appropriate interval. 7. Prefer a configurable same-origin HTTPS endpoint instead of the hard-coded plaintext private-network URL. This reduces mixed-content failures and avoids exposing health data to network interception. 8. If the health endpoint contains sensitive operational informatio ...[truncated 559 chars]