CVE-2021-21023 : Security Advisory and Response

Magento versions 2.4.1, 2.4.0-p1, and 2.3.6 are susceptible to a stored cross-site scripting vulnerability. Exploitation could allow arbitrary JavaScript execution in the victim's browser.

Understanding CVE-2021-21023

This CVE pertains to a stored cross-site scripting vulnerability in Magento Commerce versions 2.4.1 and earlier, 2.4.0-p1 and earlier, and 2.3.6 and earlier, posing a risk of arbitrary code execution.

What is CVE-2021-21023?

Magento Commerce versions mentioned are vulnerable to stored cross-site scripting, potentially enabling attackers to execute arbitrary JavaScript within the victim's browser after a successful exploit via the admin console.

The Impact of CVE-2021-21023

Successful exploitation can lead to unauthorized code execution and compromise the integrity of the affected system, necessitating immediate action to prevent potential attacks.

Technical Details of CVE-2021-21023

The vulnerability in Magento exposes a stored cross-site scripting flaw that could allow threat actors to launch arbitrary code execution attacks through the admin console.

Vulnerability Description

Magento versions 2.4.1, 2.4.0-p1, and 2.3.6 are plagued by a stored cross-site scripting vulnerability, requiring access to the admin console for exploitation.

Affected Systems and Versions

Magento Commerce versions 2.4.1, 2.4.0-p1, and 2.3.6 are confirmed to be impacted by this vulnerability, making them susceptible to potential attacks.

Exploitation Mechanism

The exploitation of this vulnerability involves injecting malicious scripts into the admin console, triggering arbitrary JavaScript execution in the victim's browser upon successful exploitation.

Mitigation and Prevention

To safeguard against CVE-2021-21023, it is crucial to take immediate measures to mitigate risks and enhance the security posture of affected Magento installations.

Immediate Steps to Take

Organizations using vulnerable Magento versions should restrict access to the admin console, apply security patches promptly, and monitor for any signs of unauthorized activity.

Long-Term Security Practices

Implementing secure coding practices, conducting regular security audits, and educating personnel on identifying and reporting potential security threats can help prevent similar vulnerabilities.

Patching and Updates

Regularly check for security updates and patches released by Adobe for Magento Commerce to address known vulnerabilities and enhance the platform's overall security.