require helmet package to secuere the headers. This ensure that the response from the express server is secure use 14 small middleware that protect agains xss requiering for example the use of HTTPS or CSP.
const helmet = requiere ('helmet')
2- SANITIZE AND VALIDATE INPUTS ONE THE PUBLIC FORUM
require express-validator to sanitize and validate any input data. We will do it in all the POST routes the authRoutes.js. We validate any possible option of hacking.
3- PROTECTION AGAINST SQL INJECTION (Prepare Statements)
Update the SQL query to use PREPARED statements instead of string interpoaltion to prevent SQl injections.
This is done in any query in queries.js.
4- CSRF (cross site request forgery) PREVENTION
Given that all your routes are in authRoutes.js, you should apply the CSRF protection middleware directly within this file to the routes that require it. Then, you can export the router and use an error-handing middleware in your main application file (e.g., app.js) to catch any CSRF-related errors. Here's how you can go about it:
This middleware function retrieves the CSRF token generated by the csrf middleware (req.csrfToken()) and stores it in the session (req.session.csrfToken).
Set the error handeling
app.use((err, req, res, next) => {
if (err.code === 'EBADCSRFTOKEN'){
console.error('Invalid CSRF token detected');
console.log('Cookies:', req.cookies);
console.log('Headers:', req.headers);
console.log('CSRF Token from Session:', req.session.csrfToken);
console.log('CSRF Token from Header:', req.get('csrf-token'));
res.status(403).send({message: 'CSRF token is invalid'});
} else {
next();
}
});
In the authRoutes.js
We set up the router with the endpoint to send the to the client-side
router.get('/csrf-token', (req, res) => {
res.json({ csrfToken: req.csrfToken() });
});
In the Login.js
set the useEffect to get the token from the session and pass it to the header request
Preventing Attacks:
1- PROTECT AGAINST XSS usin HELMET
const helmet = requiere ('helmet')
2- SANITIZE AND VALIDATE INPUTS ONE THE PUBLIC FORUM
3- PROTECTION AGAINST SQL INJECTION (Prepare Statements)
4- CSRF (cross site request forgery) PREVENTION
Given that all your routes are in authRoutes.js, you should apply the CSRF protection middleware directly within this file to the routes that require it. Then, you can export the router and use an error-handing middleware in your main application file (e.g., app.js) to catch any CSRF-related errors. Here's how you can go about it:
In the app.js
const csrfProtection = csrf(); app.use(csrfProtection);
This initializes the CSRF protection middleware. When a request is made, this middleware generates a CSRF token and attaches it to the request object.
app.use((req, res, next) => { req.session.csrfToken = req.csrfToken(); next(); });
This middleware function retrieves the CSRF token generated by the csrf middleware (req.csrfToken()) and stores it in the session (req.session.csrfToken).
app.use((err, req, res, next) => { if (err.code === 'EBADCSRFTOKEN'){ console.error('Invalid CSRF token detected'); console.log('Cookies:', req.cookies); console.log('Headers:', req.headers); console.log('CSRF Token from Session:', req.session.csrfToken); console.log('CSRF Token from Header:', req.get('csrf-token')); res.status(403).send({message: 'CSRF token is invalid'}); } else { next(); } });
In the authRoutes.js
We set up the router with the endpoint to send the to the client-side router.get('/csrf-token', (req, res) => { res.json({ csrfToken: req.csrfToken() }); });
In the Login.js
useEffect(() => { const fetchCsrfToken = async () => { const response = await fetch(
${process.env.REACT_APP_API_URL}/api/csrf-token, { method: 'GET', credentials: 'include', }); const data = await response.json(); setCsrfToken(data.csrfToken); console.log('CSRF token:', data.csrfToken); }; fetchCsrfToken(); }, []);const response = await fetch(
${process.env.REACT_APP_API_URL}/api/login, { method: 'POST', headers: { 'Content-Type': 'application/json', 'CSRF-Token': csrfToken,}, body: JSON.stringify({ email, password }), credentials: 'include', });
5 - PENETRATION TEST