News Feed
Sections




News Archive
Looking for more information on how to do PHP the right way? Check out PHP: The Right Way

Zend Developer Zone:
Avoiding XSS security attacks to sites that use HTML editors
March 27, 2007 @ 10:03:00

In an article from the Zend Developer Zone by Manuel Lemos, there's a look at how to avoid cross-site scripting security attacks on a site that allows users to input information via a HTML editor.

HTML editors are great. However, care must be taken to avoid security abuses. An application that uses HTML editors, expects that the submitted HTML content comes correctly formatted and well-formed. That happens when real users use real browsers to edit the content.

However, an attacker may create a program that pretends to be a real browser and submit specially crafted HTML with Javascript that may open security holes.

Manuel talks a bit about what cross-site scripting means in this context and a simple (Javascript) example of how a user could abuse it. His solution? Parse the incoming data (filter it!) and look for potentially harmful tag types. To do this, he recommends the PHP Input Filter class. There's even a simple example of how to use it included in the post.

0 comments voice your opinion now!
crosssitescripting htmleditor fckeditor xss inputfilter class crosssitescripting htmleditor fckeditor xss inputfilter class


blog comments powered by Disqus

Similar Posts

Codeception Blog: The Locator Class

PHPBuilder.com: An Introduction to Graphs Using PEAR\'s Image_Graph Package

Stubbles Blog: Loading classes from the XP-Framework

Vinu Thomas' Blog: Saving Data into Excel the Easy Way using PHP

Community Crosstalk: Matthew O'Phinney & Scott Johnson on Dynamic Function/Method Calls


Community Events





Don't see your event here?
Let us know!


release list code podcast framework laravel series introduction api community threedevsandamaybe language application wordpress library interview install developer unittest configure

All content copyright, 2014 PHPDeveloper.org :: info@phpdeveloper.org - Powered by the Solar PHP Framework