Enviar #785632: hcengineering platform v0.7.382 Server-Side Request Forgery

https://github.com/hcengineering/platform

Server-Side Request Forgery (SSRF) via Import Endpoints

Description

The `/import` endpoint (both GET and POST) accepts an arbitrary URL from the authenticated user and makes an HTTP request to it from the server. There is no validation on the URL scheme, host, or IP address. An attacker can use this to probe internal network services, access cloud metadata endpoints (e.g., `http://x.x.x.x/`), scan ports, and exfiltrate data from internal services.

The server also logs user-supplied cookie values to stdout, leaking potentially sensitive session tokens.

### Vulnerable Code

**File:** `server/front/src/index.ts` (Lines 679–765, GET handler)

```typescript
const handleImportGet = async (req: Request, res: Response): Promise<void> => {
// ... auth check ...
const url = req.query.url as string // User-controlled URL - NO VALIDATION
const cookie = req.query.cookie as string | undefined

console.log('importing from', url)
console.log('cookie', cookie) // SENSITIVE DATA LOGGED

const options =
cookie !== undefined
? { headers: { Cookie: cookie } } // User-controlled Cookie header forwarded
: {}

https.get(url, options, (response) => { // SSRF: Fetches arbitrary URL
// ... stores response in workspace storage ...
})
}
```

**File:** `server/front/src/index.ts` (Lines 767–845, POST handler — identical pattern)

```typescript
const handleImportPost = async (req: Request, res: Response): Promise<void> => {
// ... auth check ...
const { url, cookie } = req.body // User-controlled
console.log('importing from', url)
console.log('cookie', cookie) // SENSITIVE DATA LOGGED
// ... same https.get(url, options, ...) pattern ...
}
```

### Attack Scenario

1. Attacker authenticates with any valid workspace token.
2. `GET /import?token=<token>&url=http://x.x.x.x/latest/meta-data/iam/security-credentials/` — Reads AWS instance role credentials.
3. `GET /import?token=<token>&url=http://localhost:5432/` — Probes internal PostgreSQL port.
4. `GET /import?token=<token>&url=http://internal-admin-panel:8080/api/secrets` — Accesses internal services not exposed to the internet.
5. The response body is stored in the workspace's blob storage, allowing the attacker to retrieve it afterward.

### Impact

Access to internal network services, cloud metadata credentials, and internal APIs. In cloud environments, this frequently leads to full infrastructure compromise via stolen IAM credentials.

### Recommendation

1. **Implement a URL allowlist** — Only allow HTTPS and restrict to known external domains.
2. **Block private/reserved IP ranges** (RFC 1918, link-local, loopback, cloud metadata):
```typescript
import { isPrivate } from 'ip';
const parsed = new URL(url);
const resolved = await dns.resolve(parsed.hostname);
if (resolved.some(ip => isPrivate(ip) || ip.startsWith('169.254'))) {
throw new Error('Forbidden: Internal addresses are not allowed');
}
```
3. **Remove `console.log('cookie', cookie)`** — this leaks sensitive session tokens to logs.
4. **Remove cookie forwarding** — the server should never forward user-supplied Cookie headers.

• Usuario: Ghufran Khan (UID 95493)
• Sumisión: 2026-03-22 16:29 (hace 15 días)
• Moderación: 2026-04-05 18:06 (14 days later)
• Estado: Aceptado
• Entrada de VulDB: 355413 [hcengineering Huly Platform 0.7.382 Import Endpoint index.ts escalada de privilegios]
• Puntos: 17