ToendaCMS - Cross Site Scripting Issue

[MajorSecurity Advisory #27]ToendaCMS - Cross Site Scripting Issue

Details

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Product: Toenda CMS

Affected Version: <=1.0.3(stable) and 1.1

Immune Version: None known

Security-Risk: low

Remote-Exploit: yes

Vendor-URL: http://www.toenda.com/

Vendor-Status: informed

Advisory-Status: published

Credits

============

Discovered by: David Vieira-Kurz

http://www.majorsecurity.de

Original Advisory:

============

http://www.majorsecurity.de/index_en2.php?major_rls=major_rls27

Introduction

============

"The toendaCMS Content Management and Weblogging tool gives you a modern,

professional publishing system, based on an SQL and/or XML database.." (from Vendor's page)

More Details

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Input passed directly to the "?s" parameter in "/toendaCMS/" is not properly sanitised before being returned to the user.

This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of an affected site.

It works with a script code like this:

>'><script%20%0a%0d>alert(123456789)%3B</script>

Fix

===

None known.

Solution

=============

Edit the source code to ensure that input is properly sanitised.

You should work with "htmlspecialchars()" or "htmlentities()" php-function to ensure that html tags

are not going to be executed. Further it is recommend to set off the "register globals" option in the

"php.ini" on your webserver.

Example:

<?php

$pass = htmlentities($_POST['pass']);

echo htmlspecialchars("<script");

$id = intval($_POST['id']);

?>

Set "register_globals" to "Off".

History/Timeline

================

19.07.2006  discovery of the vulnerability

20.07.2006  additional tests with other versions

21.07.2006  contacted Toenda Software Development(vendor) on their own BugTraq.

01.08.2006  after 10 days I got still no response to my advise on their own BugTraq.

02.08.2006  advisory is written

03.08.2006  advisory released

MajorSecurity

=======

MajorSecurity is a German penetration testing and hacking security project

which consists of only one person at the present time.

I am looking for a partnership.

You can find more Information on the MajorSecurity Project at

http://www.majorsecurity.de/

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