CVE-2021-36042 : Vulnerability Insights and Analysis

Magento Commerce versions 2.4.2, 2.4.2-p1, and 2.3.7 are affected by an improper input validation vulnerability in the API File Option Upload Extension, potentially leading to remote code execution.

Understanding CVE-2021-36042

This CVE relates to a critical vulnerability in Magento Commerce that could allow an attacker with Admin privileges to upload malicious files and execute remote code.

What is CVE-2021-36042?

The vulnerability in Magento Commerce versions 2.4.2, 2.4.2-p1, and 2.3.7 arises from improper input validation in the API File Option Upload Extension. This flaw could be exploited by an attacker to achieve unrestricted file upload, leading to potential remote code execution.

The Impact of CVE-2021-36042

With a CVSS base score of 9.1 (Critical), the impact of this vulnerability is severe. Attackers with Admin privileges can exploit this flaw to upload malicious files, compromising confidentiality, integrity, and availability of the affected systems.

Technical Details of CVE-2021-36042

This section outlines the specific technical details of the vulnerability.

Vulnerability Description

The vulnerability arises from improper input validation in the API File Option Upload Extension in Magento Commerce versions 2.4.2, 2.4.2-p1, and 2.3.7.

Affected Systems and Versions

Magento Commerce versions 2.4.2, 2.4.2-p1, and 2.3.7 are affected by this vulnerability.

Exploitation Mechanism

An attacker with Admin privileges can exploit this vulnerability to achieve unrestricted file upload and potentially execute remote code on the targeted system.

Mitigation and Prevention

To address CVE-2021-36042 and enhance security, the following steps are recommended:

Immediate Steps to Take

Update Magento Commerce to a patched version that addresses the vulnerability.
Restrict Admin privileges and access to critical system functionalities.

Long-Term Security Practices

Regularly monitor and audit file uploads on the system.
Implement strong input validation mechanisms to prevent similar vulnerabilities.

Patching and Updates

Apply all security patches and updates released by Magento Commerce to mitigate the risk of exploitation.