Files
codeql/javascript/ql/test/query-tests/Security/CWE-352/csurf_example.js
Asger F cd2c4d5e3a JS: Use post-processed inline test in MissingCsrfMiddleware
This query flags the cookie-parsing middleware in order to consolidate huge numbers of alerts into a single alert, which is more manageable. But simply annotating the cookie-parsing middleware with 'Alert' isn't a very useful, we want to annotate which middlewares are vulnerable.
2025-02-21 14:44:46 +01:00

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JavaScript

// Adapted from https://github.com/expressjs/csurf, which is
// licensed under the MIT license; see file LICENSE.
var cookieParser = require('cookie-parser')
var csrf = require('csurf')
var bodyParser = require('body-parser')
var express = require('express')
// setup route middlewares
var csrfProtection = csrf({ cookie: true })
var parseForm = bodyParser.urlencoded({ extended: false })
// create express app
var app = express()
// parse cookies
// we need this because "cookie" is true in csrfProtection
app.use(cookieParser()) // $ Alert
app.get('/form', csrfProtection, function (req, res) { // OK
let newEmail = req.cookies["newEmail"];
// pass the csrfToken to the view
res.render('send', { csrfToken: req.csrfToken() })
})
app.post('/process', parseForm, csrfProtection, function (req, res) { // OK
let newEmail = req.cookies["newEmail"];
res.send('data is being processed')
})
app.post('/process_unsafe', parseForm, function (req, res) {
let newEmail = req.cookies["newEmail"];
res.send('data is being processed')
}) // $ RelatedLocation