Magento User Info Cross Site Scripting

`DefenseCode Security Advisory  
Magento Multiple Stored Cross-Site Scripting Vulnerabilities  
  
  
Advisory ID: DC-2018-03-002  
Advisory Title: Magento Multiple Stored Cross-Site Scripting Vulnerabilities  
Advisory URL: http://www.defensecode.com/advisories.php  
Software: Magento  
Version: Magento 2.0 prior to 2.0.18  
Vendor Status: Vendor contacted, vulnerability fixed  
Release Date: 06/03/2018  
Risk: MEDIUM  
  
  
  
1. General Overview  
===================  
During the security audit of Magento Open Source 2 multiple medium  
risk stored cross-site scripting vulnerabilities were discovered that  
could lead to administrator account takeover, putting the website  
customers and their payment information at risk.  
  
  
2. Software Overview  
====================  
Magento is an ecommerce platform built on open source technology  
which provides online merchants with a flexible shopping cart system,  
as well as control over the look, content and functionality of their  
online store. Magento offers powerful marketing, search engine  
optimization, and catalog-management tools. It is a leading  
enterprise-class eCommerce platform, empowering over 200,000  
online retailers.  
  
Homepage:  
http://www.magento.com  
  
  
3. Vulnerability Description  
============================  
During the security analysis of Magento Open Source 2 prior to 2.0.18  
it was discovered that the application returns unescaped and  
unsanitized user/customer controlled input on direct requests to  
several application URLs.  
  
User/customer controlled information such as customer first and last  
name, street address, city, company, shipping and billing information  
are unsanitized and unescaped in an output resulted from a direct  
request to the following url:  
  
http://website.com/admin/mui/index/render/?namespace=customer_listing&isAjax=true  
  
User/customer first and last name information is unsanitized and  
unescaped in an output resulted from a direct request to the  
following urls:  
  
http://website.com/admin/mui/index/render/?namespace=customer_online_grid&isAjax=true  
  
http://website.com/admin/mui/index/render/?namespace=sales_order_invoice_grid&isAjax=true  
  
http://website.com/admin/mui/index/render/?namespace=sales_order_grid&isAjax=true  
  
The application will return a text/html response with a json-formatted  
content. All aforementioned user-controlled input is prone to stored  
cross-site scripting.  
  
The prerequisite for this attack is that the Add Secret Key to URLs  
option is disabled. Secret keys are an additional anti-CSRF measure in  
Magento, with form keys being the primary measure (that can not be  
disabled). In a team setting this option is often disabled in order  
to be able to to pass admin links to coleagues, tickets, chat, etc.  
  
  
4. Solution  
===========  
Vendor fixed the reported security issues and released a new version.  
All users are strongly advised to update to the latest available  
version.  
  
  
5. Credits  
==========  
Discovered by Bosko Stankovic ([email protected]).  
  
  
6. Disclosure Timeline  
======================  
19/04/2017 Vendor contacted through Bugcrowd platform  
19/04/2017 Vendor responded  
28/02/2018 Vulnerability fixed  
06/03/2018 Advisory released  
  
  
7. About DefenseCode  
====================  
DefenseCode L.L.C. delivers products and services designed to analyze  
and test web, desktop and mobile applications for security  
vulnerabilities.  
  
DefenseCode ThunderScan is a SAST (Static Application Security  
Testing, WhiteBox Testing) solution for performing extensive security  
audits of application source code. ThunderScan SAST performs fast and  
accurate analyses of large and complex source code projects delivering  
precise results and low false positive rate.  
  
DefenseCode WebScanner is a DAST (Dynamic Application Security  
Testing, BlackBox Testing) solution for comprehensive security audits  
of active web applications. WebScanner will test a website's security  
by carrying out a large number of attacks using the most advanced  
techniques, just as a real attacker would.  
  
Subscribe for free software trial on our website  
http://www.defensecode.com/ .  
  
E-mail: defensecode[at]defensecode.com  
  
Website: http://www.defensecode.com  
Twitter: https://twitter.com/DefenseCode/  
`