Arbitrary Code Execution Affecting angularjs.core package, versions [,1.4.0)


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

Exploit Maturity
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  • Snyk IDSNYK-DOTNET-ANGULARJSCORE-1579466
  • published23 Jan 2017
  • disclosed9 Mar 2015
  • creditRodric Haddad

Introduced: 9 Mar 2015

CVE NOT AVAILABLE CWE-78  (opens in a new tab)

How to fix?

Upgrade AngularJS.Core to version 1.4.0 or higher.

Overview

AngularJS.Core is an AngularJS.* package for other Angular modules within .NET.

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.

CVSS Scores

version 3.1