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Magento Patches Critical Vulnerability in eCommerce Platforms

Magento this week released updates for Magento Commerce and Open Source 2.1.9 and 2.0.16 to address numerous vulnerabilities, including a remote code execution bug rated Critical severity.

Magento this week released updates for Magento Commerce and Open Source 2.1.9 and 2.0.16 to address numerous vulnerabilities, including a remote code execution bug rated Critical severity.

Featuring a CVSSv3 score of 8.2, the remote code execution flaw impacts content management system (CMS) and layouts. The vulnerability allows an administrator with limited privileges to introduce malicious code when creating a new CMS page, which would potentially result in arbitrary remote code execution.

The bug affects Magento Open Source prior to 1.9.3.6, Magento Commerce prior to 1.14.3.6, Magento 2.0 prior to 2.0.16, and Magento 2.1 prior to 2.1.9 and has been addressed in Magento Open Source 1.9.3.6, Magento Commerce 1.14.3.6, SUPEE-10266, Magento 2.0.16, and Magento 2.1.9, the company notes in an advisory.

The new patches also address three High severity vulnerabilities affecting Magento 2.0 prior to 2.0.16 and Magento 2.1 prior to 2.1.9. These bugs are an information leak in the theme creation function, and arbitrary delete issue, and a remote code execution caused by arbitrary file delete and lack of input sanitization in the Magento functional tests.

The update also resolves a total of 28 Medium risk vulnerabilities, including abuse of functionality, information leak, Cross-Site Request Forgery (CSRF), Cross-Site Scripting (XSS, stored), unvalidated redirection, remote code execution, insufficient session expiration, Denial of Service (DoS), and Insecure Direct Object Reference (IDOR).

Some of the flaws could be exploited by an attacker to obtain order information, exploit other vulnerabilities, redirect users to an external site, launch Man-in-the-middle attacks, retrieve information about past orders, or re-use cookies.

Other bugs, however, can be exploited by local admins to arbitrarily overwrite sensitive files; create URLs for CSRF attacks; inject code or executable scripts; inject code for an XSS attack; add files containing injected code; or modify page counter to prevent the creation of new pages.

Magento also addressed two Low risk vulnerabilities, namely a bug in account lockout mechanism, which leaks a Magento site’s contact e-mail, and an IDOR that allows a logged-in user to modify order fields that they do not have permission to view.

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Related: Unpatched Magento Flaw Exposes Online Stores to Attacks

Related: Cybercriminals Hijack Magento Extension to Steal Card Data

Related: Self-Healing Malware Hits Magento Stores

Written By

Ionut Arghire is an international correspondent for SecurityWeek.

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