Re: This code using _GET exploitable

From: Date: Wed, 11 Mar 2009 12:44:06 +0000
Subject: Re: This code using _GET exploitable
References: 1  Groups: php.general 
Request: Send a blank email to php-general+get-289839@lists.php.net to get a copy of this message
filtered schreef: > Hi, > > we have script containing > > <? echo $_GET['studio'] ?> let say I do: example.com/yourscript.php?studio=<script type="text/javascript">alert('I am an evil haxor');</script> excusing the fact that the query is not urlencoded, what happens on your site (replace domain and script name to match your site/script) > > and > > <? > $cam = $_GET['cam']; > > if ($cam == '1') { > echo '<img > src="http://example.com"" />'; > } if ($_GET['cam'] === '1') echo '<img src="http://example.com" />'; no need to create the $cam var, and a little better to check for the exact value+type (===) > ?> > > Is this code prone to XSS attacks or for attacking the local webserver > and if so, how? > > $cam isn't used anywhere else. > > -a >

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