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Create vulnerable.js #8

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32 changes: 32 additions & 0 deletions vulnerable.js
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Original file line number Diff line number Diff line change
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const express = require('express');
const router = express.Router()

const lodash = require('lodash');

//if req.body.config == '{"constructor": {"prototype": {"isAdmin": true}}}' it will bypass the authentication
function check(req, res) {

let config = {};
lodash.defaultsDeep(config, JSON.parse(req.body.config));

let user = getCurrentUser();
if(!user){
user = {};
}

if (user.isAdmin && user.isAdmin === true) {
res.send('Welcome Admin')
}else{
res.send('Welcome User')
}
}

//fake function that get current user from session or db
function getCurrentUser(){
return false;
}


router.post('/check-user',check)

module.exports = router