full-disclosure - Re: Wordpress 2.3 Cross Domain Content Insertion- New vulnerability + exploit

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Message-Id: <9516566B-9373-469C-8F6D-627EB45D163D@gmail.com>
Date: Tue, 13 Nov 2007 18:47:32 -0800
From: Andrew Farmer <andfarm@...il.com>
To: XSS Worm XSS Security Information Portal
	<cross-site-scripting-security@...worm.com>
Cc: full-disclosure <full-disclosure@...ts.grok.org.uk>,
	websecurity@...appsec.org
Subject: Re: Wordpress 2.3 Cross Domain Content Insertion-
	New vulnerability + exploit - xssworm.com

On 13 Nov 07, at 18:08, XSS Worm XSS Security Information Portal wrote:
> We have looked at coding for wp-slimstat but we cannot see any  
> problem with
> input validating. Maybe some of the xssworm.com readers can show us  
> where
> problem is in the php code because we cannot see any porblem here:

OK, I'll bite...

<snip>
> href="?page='.$_GET['page'].'&panel='.$_GET["panel"].'">'.__('Reset
> filters', 'wp-slimstat').'</a>':").'
> <input type="hidden" name="page" value="'.$_GET['page'].'" />
> <input type="hidden" name="panel" value="'.$_GET["panel"].'" />
> <input type="hidden" name="fd" value="'.$_GET["fd"].'" /></form>';

Those all look like you could escape from the tag attribute with a  
well-placed double quote, assuming that there's no preprocessing on  
$_GET.

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