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Date: Tue, 6 Mar 2018 13:32:48 +0100
From: Defense Code <>
Subject: DefenseCode Security Advisory: Magento Multiple Stored Cross-Site
 Scripting Vulnerabilities

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:
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.


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:

User/customer first and last name information is unsanitized and
unescaped in an output resulted from a direct request to the
following urls:

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

5. Credits
Discovered by Bosko Stankovic (

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

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 .

E-mail: defensecode[at]


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