Homepage
About Snyk

Arbitrary Code Execution Affecting angular package, versions <1.4.0-beta.6

0.0
high

Snyk CVSS

    Attack Complexity High
    Confidentiality High
    Integrity High

    Threat Intelligence

    Exploit Maturity Proof of concept

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk ID npm:angular:20150310
  • published 23 Jan 2017
  • disclosed 9 Mar 2015
  • credit Rodric Haddad
Report a new vulnerability Found a mistake?

Introduced: 9 Mar 2015

CVE NOT AVAILABLE CWE-78 Open this link in a new tab

How to fix?

Upgrade angular to version 1.4.0-beta.6 or higher.

Overview

angular is a package that lets you write client-side web applications as if you had a smarter browser. It also lets you use HTML as your template language and lets you extend HTML’s syntax to express your application’s components clearly and succinctly.

Affected versions of this package are vulnerable to Arbitrary Code Execution via unsafe svg animation tags.

Details

Exploit Example:

<svg>
  <a xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="?">
    <circle r="400"></circle>
    <animate attributeName="xlink:href" begin="0" from="javascript:alert(1)" to="&" />
  </a>
</svg>

Here the anchor's href is animated, starting from a value that's a javascript URI. This allows execution of arbitrary javascript in the process. Preventing only the animation of links is tricky, as SVG is weird and namespaces aren't predictable. The fix is to have the sanitizer filter out svg animation tags instead.