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



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:
===========
The information provided in this advisory is provided as it is without any warranty. Vulnerability-Lab disclaims all warranties,
either expressed or implied, including the warranties of merchantability and capability for a particular purpose. Vulnerability-
Lab or its suppliers are not liable in any case of damage, including direct, indirect, incidental, consequential loss of business
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states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation
may not apply. Any modified copy or reproduction, including partially usages, of this file requires authorization from Vulnerability-
Lab. Permission to electronically redistribute this alert in its unmodified form is granted. All other rights, including the use of
other media, are reserved by Vulnerability-Lab or its suppliers.

Copyright © 2012|Vulnerability-Lab

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