Gitead/DentalManagementMH06
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security: restrict network-backup endpoints to LAN IPs only

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Requests from outside 10.x, 192.168.x, 172.16-31.x, 127.x are rejected
with 403 before the API key is even checked. This prevents the database
dump endpoint from being reachable from the internet even if the key leaked.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Summit Dental Care
2026-06-22 23:53:28 -04:00
parent fcf6effb7b
commit 8154e904b9
1 changed files with 23 additions and 3 deletions
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26
apps/Backend/src/routes/network-backup-public.ts
View File

@@ -9,7 +9,27 @@ const router = Router();
const UPLOADS_DIR = path.resolve(process.cwd(), "uploads");
function checkApiKey(req: Request, res: Response): boolean {
function isLanIp(ip: string): boolean {
return (
/^127\./.test(ip) ||
/^10\./.test(ip) ||
/^192\.168\./.test(ip) ||
/^172\.(1[6-9]|2\d|3[01])\./.test(ip)
);
}
function checkAccess(req: Request, res: Response): boolean {
// Only allow requests from the local network
const ip =
(req.headers["x-real-ip"] as string) ||
(req.headers["x-forwarded-for"] as string)?.split(",")[0].trim() ||
req.socket.remoteAddress ||
"";
if (!isLanIp(ip)) {
res.status(403).json({ error: "Access restricted to local network" });
return false;
}
const providedKey = req.headers["x-network-backup-key"] as string | undefined;
if (!providedKey) {
res.status(401).json({ error: "Missing X-Network-Backup-Key header" });
@@ -25,7 +45,7 @@ function checkApiKey(req: Request, res: Response): boolean {
// GET /api/database-management/network-backup
router.get("/network-backup", async (req: Request, res: Response): Promise<any> => {
if (!checkApiKey(req, res)) return;
if (!checkAccess(req, res)) return;
const pg = spawn(
"pg_dump",
@@ -59,7 +79,7 @@ router.get("/network-backup", async (req: Request, res: Response): Promise<any>
// GET /api/database-management/network-backup-files
router.get("/network-backup-files", (req: Request, res: Response): any => {
if (!checkApiKey(req, res)) return;
if (!checkAccess(req, res)) return;
if (!fs.existsSync(UPLOADS_DIR)) {
return res.status(200).end();