Access Restriction Bypass Affecting url-parse package, versions <1.5.6


0.0
medium

Snyk CVSS

    Attack Complexity High
    Confidentiality High

    Threat Intelligence

    Exploit Maturity Proof of concept
    EPSS 0.08% (34th percentile)
Expand this section
NVD
5.3 medium

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  • Snyk ID SNYK-JS-URLPARSE-2401205
  • published 15 Feb 2022
  • disclosed 15 Feb 2022
  • credit ranjit-git

How to fix?

Upgrade url-parse to version 1.5.6 or higher.

Overview

url-parse is a Small footprint URL parser that works seamlessly across Node.js and browser environments.

Affected versions of this package are vulnerable to Access Restriction Bypass due to improper parsing process, that may lead to incorrect handling of authentication credentials and hostname, which allows bypass of hostname validation.

PoC:

// PoC.js
 var parse = require('url-parse')
var cc=parse("http://admin:password123@@127.0.0.1")

//Output:
{ slashes: true,
  protocol: 'http:',
  hash: '',
  query: '',
  pathname: '/',
  auth: 'admin:password123',
  host: '@127.0.0.1',
  port: '',
  hostname: '@127.0.0.1',
  password: 'password123',
  username: 'admin',
  origin: 'http://@127.0.0.1',
  href: 'http://admin:password123@@127.0.0.1/' }