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[FD] Jease CMS v2.11 - Persistent UI Web Vulnerability

Document Title:
===============
Jease CMS v2.11 - Persistent UI Web Vulnerability


References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1373


Release Date:
=============
2014-12-12


Vulnerability Laboratory ID (VL-ID):
====================================
1373


Common Vulnerability Scoring System:
====================================
3.7


Product & Service Introduction:
===============================
Jease is an Open Source Content-Management-System which is driven by the power 
of Java. Jease means `Java with Ease`, 
so Jease promises to keep simple things simple and the hard things (j)easy. 
Content-Management with Jease. Jease is built 
on top of the most advanced open-source technologies existing in the 
Java-community. Jease glues these technologies together 
to provide an outstanding productive development experience by combining the 
safety and ide-/compiler-support of Java with 
the turn-around-times of scripting languages.

(Copy of the Vendor Homepage: http://www.jease.org/ )


Abstract Advisory Information:
==============================
The independent Vulnerability Laboratory Researcher (Manideep K.) discovered a 
persistent input validation web vulnerability in the Jease 2.11 CMS.


Vulnerability Disclosure Timeline:
==================================
2014-12-12:  Public Disclosure (Vulnerability Laboratory)


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


Affected Product(s):
====================
Jease
Product: Jease - Content Management System 2.11


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


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


Technical Details & Description:
================================
An application-side input validation web vulnerability has been discovered in 
the official Jease v2.11 Content Management System.
The vulnerability allows an attacker to inject own script code as payload to 
the application-side of the vulnerable service function.

The vulnerability is located in the content values of the create function. 
Local attackers with low privileged application user accounts 
are able to manipulate the content input values by usage of the create 
functions. The execution of the persistent script code occurs in 
the view browser module of the content management system. The attack vector is 
persistent on the application-side and the request method 
to inject is POST. The issue allows to transfer persistent malicious script 
codes to the frontend service.

The security risk of the application-side web vulnerability is estimated as 
medium with a cvss (common vulnerability scoring system) count of 3.7.
Exploitation of the application-side web vulnerability requires a low 
privileged web-application user account and low user interaction.
Successful exploitation of the vulnerability results in persistent phishing 
mails, session hijacking, persistent external redirect to malicious 
sources and application-side manipulation of affected or connected module 
context.

Request Method(s):
                                        [+] POST

Vulnerable Module(s):
                                        [+] Create

Vulnerable Parameter(s):
                                        [+] content

Affected Module(s):
                                        [+] View - Browser Service


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

Manual steps to reproduce:
1. Install the Content Management System
2. Open online service to interact (link - 
http://jease.127.0.0.1:8080/login?file&auth 
3. Click to include on any entry (Alternatively, you can create one and 
reproduce) and enter the following parameters in the Content section 
Note: (Select the plaintext option present at the end of the content box) 
4. Enter “ <script>alert(document.cookie)</script> ” or “ 
<script>alert(document.cookie)</script> ” in the box and press view in browser 
option 
Note: the request got saved and is now persistent included to the browser 
module service
5. Successful reproduce of the vulnerability!


Security Risk:
==============
The security risk of the persistent input validation web vulnerability in the 
Jease CMS is estimated as medium. (CVSS 3.7)


Credits & Authors:
==================
Manideep K. - Information Security Researcher 
[https://in.linkedin.com/in/manideepk]


Disclaimer & Information:
=========================
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