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JavaScript Security

You're reading from   JavaScript Security Learn JavaScript security to make your web applications more secure

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Product type Paperback
Published in Nov 2014
Publisher
ISBN-13 9781783988006
Length 112 pages
Edition 1st Edition
Languages
Tools
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Author (1):
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Eugene Liang Eugene Liang
Author Profile Icon Eugene Liang
Eugene Liang
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Toc

Basic defense against similar attacks

First and foremost, we need to prevent cross-origin posting of form values unless we are absolutely sure that we have a way to control (or at least know who can do it) the POST. For a start, we can prevent cross-origin posting without permissions.

For instance, here's what we can do to prevent cross-origin posting: we first need to install cookie-session (https://github.com/expressjs/cookie-session) and CSRF (https://github.com/expressjs/csurf) and then apply them in our server.js file.

To install CSRF, simply run the command npm install –g csrf.

The settings of our server.js file now look like this:

var express    = require('express');
var bodyParser = require('body-parser');
var app        = express();
var session    = require('cookie-session');
var csrf    = require('csrf');

app.use(csrf());
app.use(bodyParser());

var port     = process.env.PORT || 8080; // set our port

var mongoose   = require(...
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