Re: Advanced Guestbook

[Stewart Souter <webmaster () carbonize co uk>]

In-Reply-To: <8ea2ac2004120211406650777b () mail gmail com>

This exploit does not exist. I wish people would actually check their facts before crying wolf. Advanced guestbook 
2.3.1 already checks the URL as it is submitted. It uses the following if statement.

if (htmlspecialchars($this->url) != "$this->url") {
  $this->url = '';
}

which can be found in lib/add.entry.php.

regards,
Carbonize

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> Message-ID: <8ea2ac2004120211406650777b () mail gmail com>
> Date: Thu, 2 Dec 2004 20:40:21 +0100
> From: Emile van Elen <emile.van.elen () gmail com>
> Reply-To: Emile van Elen <emile.van.elen () gmail com>
> To: bugtraq () securityfocus com
> Subject: Advanced Guestbook
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>
> There's a XSS in Advanced Guestbook 2.3.1
>
> For example:
>
> index.php?entry=&lt;script&gt;alert(document.cookie)&lt;/script&gt;
>
>
> greetings,
> -- 
> Emile van Elen