CVE-2019-7912 : Vulnerability Insights and Analysis

Magento 2 versions 2.1 before 2.1.18, 2.2 before 2.2.9, and 2.3 before 2.3.2 are vulnerable to a file upload filter bypass that could allow an authenticated user with admin privileges to upload and execute malicious files on the server.

Understanding CVE-2019-7912

This CVE involves a loophole in the file upload filter of specific Magento versions, enabling unauthorized file uploads and execution on the server.

What is CVE-2019-7912?

A vulnerability in Magento versions 2.1, 2.2, and 2.3 allows a logged-in user with administrator permissions to bypass file extension filters, potentially leading to the upload and execution of harmful files.

The Impact of CVE-2019-7912

This vulnerability could result in unauthorized users uploading and executing malicious files on the server, compromising its security and integrity.

Technical Details of CVE-2019-7912

Magento 2 versions 2.1 before 2.1.18, 2.2 before 2.2.9, and 2.3 before 2.3.2 are affected by this vulnerability.

Vulnerability Description

The flaw allows an authenticated user with admin privileges to modify configuration settings, bypass file extension filters, and upload harmful files.

Affected Systems and Versions

Product: Magento 2
Versions Affected: Magento 2.1 prior to 2.1.18, Magento 2.2 prior to 2.2.9, Magento 2.3 prior to 2.3.2

Exploitation Mechanism

An authenticated user with admin permissions can exploit the vulnerability by manipulating configuration keys to evade file extension filters.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent the exploitation of this vulnerability.

Immediate Steps to Take

Apply the security patch provided by Magento to fix the vulnerability.
Regularly monitor and review file uploads and server activities for any suspicious behavior.

Long-Term Security Practices

Implement least privilege access controls to limit user permissions.
Conduct regular security audits and penetration testing to identify and address vulnerabilities.

Patching and Updates

Ensure that Magento is updated to the latest secure version to prevent exploitation of known vulnerabilities.