In-Reply-To: <8ea2ac2004120211406650777b (at) mail.gmail (dot) com [email concealed]>

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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>Date: Thu, 2 Dec 2004 20:40:21 +0100
>From: Emile van Elen <emile.van.elen (at) gmail (dot) com [email concealed]>
>Reply-To: Emile van Elen <emile.van.elen (at) gmail (dot) com [email concealed]>
>To: bugtraq (at) securityfocus (dot) com [email concealed]
>Subject: Advanced Guestbook
>Mime-Version: 1.0
>Content-Type: text/plain; charset=US-ASCII
>Content-Transfer-Encoding: 7bit
>
>There's a XSS in Advanced Guestbook 2.3.1
>
>For example:
>
>index.php?entry=<script>alert(document.cookie)</script>
>
>
>greetings,
>--
>Emile van Elen
>

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