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CMS Papoo 6.0.0 Revision 4701 Cross Site Scripting

CMS Papoo 6.0.0 Revision 4701 Cross Site Scripting
Posted Dec 15, 2014
Authored by Steffen Roesemann

CMS Papoo version 6.0.0 revision 4701 suffers from a persistent cross site scripting vulnerability.

tags | exploit, xss
SHA-256 | 995a953201a4398317eba7d813f684f1cdaafedc779ceeb291f0aacca6b0d9ae

CMS Papoo 6.0.0 Revision 4701 Cross Site Scripting

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Advisory: Persistent XSS Vulnerability in CMS Papoo Light v6
Advisory ID: SROEADV-2014-01
Author: Steffen Rösemann
Affected Software: CMS Papoo Version 6.0.0 Rev. 4701
Vendor URL: http://www.papoo.de/
Vendor Status: fixed
CVE-ID: -

==========================
Vulnerability Description:
==========================

The CMS Papoo Light Version has a persistent XSS vulnerability in its guestbook functionality and in its user-registration functionality.

==================
Technical Details:
==================

XSS-Vulnerability #1:

Papoo Light CMS v6 provides the functionality to post comments on a guestbook via the following url: http://{target-url}/guestbook.php?menuid=6.

The input fields with the id „author“ is vulnerable to XSS which gets stored in the database and makes that vulnerability persistent.

Payload-Examples:

<img src='n' onerror=“javascript:alert('XSS')“ >
<iframe src=“some_remote_source“></iframe>

XSS-Vulnerability #2:

People can register themselves on Papoo Light v6 CMS at http://{target-url}/account.php?menuid=2. Instead of using a proper username, an attacker can inject HTML and/or JavaScriptcode on the username input-field.

Code gets written to the database backend then. Attacker only has to confirm his/her e-mail address to be able to login and spread the code by posting to the forum or the guestbook where the username is displayed.

Payload-Examples:

see above (XSS #1)

=========
Solution:
=========

Update to the latest version

====================
Disclosure Timeline:
====================
13-Dec-2014 – found XSS #1
13-Dec-2014 - informed the developers (XSS #1)
14-Dec-2014 – found XSS #2
14-Dec-2014 – informed the developers (XSS #2)
15-Dec-2014 - release date of this security advisory
15-Dec-2014 - response and fix by vendor
15-Dec-2014 - post on BugTraq

========
Credits:
========

Vulnerability found and advisory written by Steffen Rösemann.

===========
References:
===========

http://www.papoo.de/
http://sroesemann.blogspot.de
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