[MajorSecurity #11]OpenCMS<= 6.2.1 - XSS

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Software: OpenCMS

Version: <=6.2.1

Type: Cross site scripting

Date: June, 10th 2006

Vendor: Alkacon Software GmbH

Page: http://www.alkacon.com

http://www.opencms.org/opencms/en/

Credits:

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Discovered by: David "Aesthetico" Vieira-Kurz

http://www.majorsecurity.de

Original Advisory:

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http://www.majorsecurity.de/advisory/major_rls11.txt

Affected Products:

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OpenCMS 6.2.1 and prior

Description:

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OpenCms is a professional level Open Source Website Content Management System.

Requirements:

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register_globals = On

Vulnerability:

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Input passed to the search inputbox/query is not properly verified.

This can be exploited to accomplish cross site sctipting attacks.

Solution:

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

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

are not going to be executed.

Example:

<?php

echo htmlspecialchars("<script");

?>

Set "register_globals" to "Off".

Exploitation:

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Goto the search query/inputbox and type in following line as searchword:

<script>alert("MajorSecurity")</script>

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