[Full-disclosure] Strato FAQ Center 2012 - Cross Site Scripting Vulnerability

["research@xxxxxxxxxxxxxxxxxxxxx" <research@xxxxxxxxxxxxxxxxxxxxx>]

Title:
======
Strato FAQ Center 2012 - Cross Site Scripting Vulnerability


Date:
=====
2012-01-06


References:
===========
http://www.vulnerability-lab.com/get_content.php?id=372
http://www.vulnerability-lab.com/news/get_news.php?id=68

VL-ID:
=====
372


Introduction:
=============
FAQ / Login & Support Center of the Strato GmbH ...  CMS by STRATO AG, 
Customer-Care IT - Ostendorff

(Copy of the Vendor Homepage: http://www.strato.de &  http://www.strato-faq.de )


Abstract:
=========
A Vulnerability-Lab researcher discovered a non persistent cross site scripting 
vulnerability in the strato vendor faq center cms 2012.


Report-Timeline:
================
2012-01-03:     Vendor Notification
2012-01-04:     Vendor Response/Feedback
2012-01-05:     Vendor Fix/Patch
2012-01-06:     Public or Non-Public Disclosure


Status:
========
Published


Affected Products:
==================

Exploitation-Technique:
=======================
Remote


Severity:
=========
Medium


Details:
========
A non persistent input validation vulnerability has been detected on the strato 
vendor faq center cms.
The vulnerability allows  remote attacker to hijack customer sessions with 
required user inter action click.
Successful exploitation can result in client-side content manipulation, client 
side cross site scripting, 
session hijacking & client side phishing.

Vulnerable File(s):
                                [+] Kategories HTML

Vulnerable Module(s):
                                [+] Search Result - Input Fields & Output 
Listing

Vulnerable Param(s):
                                [+] sessionid  &  sub_kat

Picture(s):
                                ../1.png
                                ../2.png
                                ../3.png


Solution:
=========
To fix the non persistent cross site vulnerability restrict/parse the input on 
&sub_kat= & sessionid.
Parse the output listing of the vulnerable & implement an exception-handling to 
prevent against client-side script code executions.



Risk:
=====
The security risk of the non persistent cross site scripting vulnerability is 
estimated as medium(-).


Credits:
========
Vulnerability Research Laboratory - Benjamin Kunz Mejri (Rem0ve)


Disclaimer:
===========
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Lab. Permission to electronically redistribute this alert in its unmodified 
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                                                Copyright © 
2012|Vulnerability-Lab

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