News Feed
Sections




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

Elijah Horton:
Sandboxing Untrusted Code With PHPSandbox
April 29, 2013 @ 11:56:37

Elijah Horton has a recent post to his site sharing a tool he's developed to sandbox and validate PHP code of user-contributed code.

Few quotes related to the PHP language are as pithy and resoundingly accurate as the phrase: "Eval is evil." The reasons are myriad: the eval() function basically gives whatever code is passed to it unlimited control of the parser, and this freedom makes eval() both a temptation for developers, who may need to dynamically control PHP at runtime, and a panacea for hackers who are ever-searching for more servers to add to their botnets. So, how does one make use of the extreme power available through runtime evaulation of PHP, without exposing one's server to near-certain rooting? Through a sandbox.

His tool - PHPSandbox, uses the PHP-Parser library to deconstruct the PHP code its given and look for issues. He gives an example of a call to mail and how it would catch the issue. He shows how to install it via Composer, how to configure it with whitelisted methods/functions. It also includes a way to overwrite function calls with a bit safer alternative.

0 comments voice your opinion now!
sandbox protection contributed code validation function

Link: http://www.fieryprophet.com/blog/detail/sandboxing-untrusted-code-with-phpsandbox

blog comments powered by Disqus

Similar Posts

David Coallier's Blog: Free PHP Security Scan

Packt Publishing: PHP Magic Features

Phil Bennett: Revisiting: Benchmarking Dependency Injection Containers

NetTuts.com: Refactoring Legacy Code: Part 3 - Complex Conditionals

The Shadow Fox Network: Create Dynamic URLs With Mod_Rewrite and PHP Functions


Community Events





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


install package library application podcast tool version introduction community voicesoftheelephpant interview release framework security series composer laravel opinion language symfony

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