News Feed

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

Gareth Heyes' Blog:
Faking the unexpected
December 04, 2007 @ 08:36:04

Gareth Heyes has an example of yet another way he's seen developers incorrectly handle incoming connections and the information inside. This time, he focuses on the remote IP coming from the client.

Developers place too much trust in everything, they assume that certain data cannot be faked and therefore these pieces of data can be used as a Trojan horse. Lets take the REMOTE IP of a user, it seems a trusted source because of the TCP/IP connection between the user and the server.

He points out the difference between HTTP_X_FORWARDED_FOR and REMOTE_ADDR and how, despite them being the same almost all of the time, shouldn't be trusted since they could be spoofed. He even includes an example script showing how it could be done (and how a bit of Javascript can even be inserted).

0 comments voice your opinion now!
remoteaddr httpxforwardedfor remote ip address exploit remoteaddr httpxforwardedfor remote ip address exploit

blog comments powered by Disqus

Similar Posts

PHP Security Blog: phpBB exploit in the wild

Tiffany Brown's Blog: A better RegEx pattern for matching e-mail addresses Exploiting Amazon Web Services via PHP and SQLite

Gareth Heyes' Blog: Faking the unexpected

Community News: PHP Remote Exploit - Floating Point Issue Causes Freeze/Crash

Community Events

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

conference laravel configure framework series api threedevsandamaybe opinion interview version symfony composer introduction voicesoftheelephpant community release list language podcast unittest

All content copyright, 2015 :: - Powered by the Solar PHP Framework