CVE-2021-36039 : Exploit Details and Defense Strategies

Magento Commerce versions 2.4.2 (and earlier), 2.4.2-p1 (and earlier), and 2.3.7 (and earlier) have been identified with an improper input validation vulnerability through the

quoteId

parameter. This vulnerability could potentially lead to the disclosure of sensitive information.

Understanding CVE-2021-36039

This section delves into the details regarding CVE-2021-36039.

What is CVE-2021-36039?

The vulnerability affects Magento Commerce versions 2.4.2, 2.4.2-p1, and 2.3.7, where an error in input validation in the

quoteId

parameter could allow malicious actors to expose confidential data.

The Impact of CVE-2021-36039

The impact of this vulnerability is rated as medium severity with a CVSS base score of 6.5. It could result in high confidentiality impact if exploited.

Technical Details of CVE-2021-36039

In this section, we explore the technical aspects of CVE-2021-36039.

Vulnerability Description

The vulnerability arises from improper input validation via the

quoteId

parameter in Magento Commerce, enabling attackers to access sensitive information.

Affected Systems and Versions

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

Exploitation Mechanism

By manipulating the

quoteId

parameter, threat actors can exploit this vulnerability to reveal critical data.

Mitigation and Prevention

Here's how you can address the CVE-2021-36039 vulnerability.

Immediate Steps to Take

Update Magento Commerce to a secure version and validate user inputs to mitigate potential risks.

Long-Term Security Practices

Implement security best practices, conduct regular security audits, and educate your team on identifying and addressing vulnerabilities.

Patching and Updates

Stay informed about security advisories from Adobe regarding Magento Commerce and apply patches promptly to shield your systems from exploitation.