CVE-2021-36044 : 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) are affected by an improper input validation vulnerability. An unauthenticated attacker could abuse this vulnerability to cause a server-side denial-of-service using a GraphQL field.

Understanding CVE-2021-36044

This CVE involves an improper input validation vulnerability in Magento Commerce versions, potentially leading to a denial-of-service attack.

What is CVE-2021-36044?

Magento Commerce versions 2.4.2, 2.4.2-p1, and 2.3.7 are susceptible to a security flaw that allows unauthenticated attackers to exploit a GraphQL field for server-side denial-of-service.

The Impact of CVE-2021-36044

The impact of this vulnerability is rated as high with a CVSS base score of 7.5. It can result in a server-side denial-of-service attack without requiring any special user privileges.

Technical Details of CVE-2021-36044

This section covers the technical aspects of the vulnerability.

Vulnerability Description

The vulnerability arises from improper input validation, allowing attackers to disrupt service availability through a GraphQL field.

Affected Systems and Versions

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

Exploitation Mechanism

An unauthenticated attacker can exploit the vulnerability by manipulating input through the GraphQL field, resulting in a denial-of-service condition.

Mitigation and Prevention

To address CVE-2021-36044, follow these security practices.

Immediate Steps to Take

Update Magento Commerce to a patched version that addresses the input validation issue.
Monitor network traffic for any suspicious activity.

Long-Term Security Practices

Regularly update and patch software to mitigate known vulnerabilities.
Implement proper input validation mechanisms in web applications to prevent similar exploits.

Patching and Updates

Refer to the provided link for specific patches and updates for Magento Commerce: Magento Commerce Security Update.