Document Title:
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Magento Commerce T2 - (attr) Persistent Web Vulnerability
References (Source):
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http://www.vulnerability-lab.com/get_content.php?id=1459
Release Date:
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2018-02-06
Vulnerability Laboratory ID (VL-ID):
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1459
Common Vulnerability Scoring System:
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4.3
Vulnerability Class:
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Cross Site Scripting - Persistent
Current Estimated Price:
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1.000€ - 2.000€
Product & Service Introduction:
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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:
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The Vulnerability Laboratory Research Team discovered an application-side vulnerability in the official Magento Commerce web-application.
Vulnerability Disclosure Timeline:
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2018-02-06: Public Disclosure (Vulnerability Laboratory)
Discovery Status:
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Published
Affected Product(s):
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Ebay Inc.
Product: Magento - Connect Web Application 2015 Q2
Exploitation Technique:
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Remote
Severity Level:
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Medium
Authentication Type:
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Restricted authentication (user/moderator) - User privileges
User Interaction:
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Low User Interaction
Disclosure Type:
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Bug Bounty Program
Technical Details & Description:
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A persistent input validation web vulnerability has been discovered in the official Magento xCommerce web-application.
The vulnerability allows remote attackers to inject own script code on the application-side of the affected service module.
The vulnerability is located in the `attr` value of the `magento-connect/message/message/create/ ` module. The attacker needs
to create a `New Message` and tampers the POST method request. Then he changes the vulnerable attr value with a malicious payload.
The execution occurs in the same modules context. The request method to inject is POST and the attack vector of the vulnerability
is located on the application-side of the magento service.
The security risk of the persistent web vulnerability is estimated as medium with a cvss (common vulnerability scoring system) count of 3.9.
Exploitation of the persistent web vulnerability requires a low privileged web-application user account and low or medium user interaction.
Successful exploitation of the application-side vulnerability results in session hijacking, persistent phishing, persistent external redirects
and persistent manipulation affected or connected module context.
Vulnerable Domain(s):
[+] www.magentocommerce.com/ (Magento Connect)
Request Method(s):
[+] POST
Vulnerable Module(s):
[+] New Message
Vulnerable Parameter(s):
[+] attr
Proof of Concept (PoC):
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The application-side input validation web vulnerability can be exploited by remote attackers with low privileged web-application user account and
low or medium 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. Open the following url of magento commerce (https://www.magentocommerce.com/magento-connect/message/message/create/)
2. Click
Magento send message
3. Tamper the session to intercept the attr value to bypass the filter
4. Application-side script code (html or js) execution occurs in the followup request of the same module page
5. Successful reproduce of the filter bypass issue and application-side input validation vulnerability!
POC: Execution Point