CVE-2021-28566 Explained : Impact and Mitigation

Magento Commerce versions 2.4.2 (and earlier), 2.4.1-p1 (and earlier), and 2.3.6-p1 (and earlier) are found to be vulnerable to an Information Disclosure flaw during the upload action involving a manipulated png file. This could potentially expose the document root path to an unauthorized attacker.

Understanding CVE-2021-28566

This CVE discloses an information exposure vulnerability in Magento Commerce that could lead to critical information leakage if successfully exploited.

What is CVE-2021-28566?

CVE-2021-28566 affects Magento Commerce versions 2.4.2 (and earlier), 2.4.1-p1 (and earlier), and 2.3.6-p1 (and earlier). The vulnerability arises when a modified png file is uploaded as a product image, potentially revealing sensitive system paths.

The Impact of CVE-2021-28566

Successful exploitation of this vulnerability could result in the disclosure of the document root path by an unauthenticated attacker. Access to the admin console is necessary for the exploit to be successful.

Technical Details of CVE-2021-28566

This section provides insights into the vulnerability's description, affected systems, and the exploitation mechanism.

Vulnerability Description

The vulnerability in Magento Commerce allows for the disclosure of sensitive system information when a specifically crafted png file is uploaded as a product image.

Affected Systems and Versions

Magento Commerce versions 2.4.2, 2.4.1-p1, and 2.3.6-p1 are confirmed to be impacted by this information disclosure vulnerability.

Exploitation Mechanism

To exploit CVE-2021-28566 successfully, an attacker needs to be able to upload a modified png file as a product image, necessitating access to the admin console.

Mitigation and Prevention

To enhance security and protect your system from CVE-2021-28566, consider implementing the following measures:

Immediate Steps to Take

Update Magento Commerce to the latest version available.
Restrict access to the admin console to authorized personnel only.

Long-Term Security Practices

Regularly monitor and audit file uploads on the system.
Conduct security training for personnel on safe upload practices.

Patching and Updates

Stay informed about security patches and updates released by Adobe and apply them promptly to mitigate the risk of exploitation.