Once again a vulnerability in the popular Magento e-commerce platform opens at risk of hijacking attacks millions of online merchants. According to the experts at Sucuri, the Magento e-commerce platform was affected by a stored cross-site scripting (XSS) vulnerability. All the versions of Magento Community Edition and Enterprise Edition prior to 220.127.116.11 and 18.104.22.168 are affected by this vulnerability that could be easily exploited by a remote attacker.
“During our regular research audits for our Cloud-based WAF, we discovered a Stored XSS vulnerability affecting the Magento platform that can be easily exploited remotely. We notified the Magento team and worked with them to get it fixed.” states an advisory published by Sucuri.
The experts ethically reported the vulnerability to the Magento security team to give it the possibility to develop a fix.
Magento admitted the flaw and published an advisory.
“The buggy snippet is located inside Magento core libraries, more specifically within the administrator’s backend,” continues the Sucuri advisory. “Unless you’re behind a WAF or you have a very heavily modified administration panel, you’re at risk. As this is a Stored XSS vulnerability, this issue could be used by attackers to take over your site, create new administrator accounts, steal client information, anything a legitimate administrator account is allowed to do.”
The issue affects the code present in the form app/design/adminhtml/default/default/template/sales/order/view/info.phtml, in particular the experts noticed the use of the getCustomerEmail method’s that returns value to the administration panel.
This piece of code looked similar to the one Sucuri has found in the WordPress Jetpack plugin a couple months ago, the experts focused their analysis on the validation mechanism implemented by Magento.
The analysis of the code used to validate the input revealed that two different forms of emails were accepted:
Ops … this means that by using an email like “><script>alert(1);</script>”@sucuri.net as and submitting an order it was possible to trigger the XSS flaw within the Magento Core..
In this way the experts triggered an XSS in Magento Core.
There is no time to waste, Magento administrator should install the update as soon as possible.
(Security Affairs – Magento, stored cross-site scripting (XSS))