CVE-2021-32759 : Exploit Details and Defense Strategies

In this article, you will learn about CVE-2021-32759, a vulnerability in OpenMage magento-lts that allowed admin users to upload arbitrary executable files due to missing data flow sanitation.

Understanding CVE-2021-32759

This section will provide an overview of the vulnerability and its impact.

What is CVE-2021-32759?

CVE-2021-32759 is a data flow sanitation issue in OpenMage magento-lts versions prior to 19.4.15 and 20.0.13, allowing admin users to upload arbitrary executable files to the server.

The Impact of CVE-2021-32759

The vulnerability had a CVSSv3.1 base score of 7.2, with high severity impact on confidentiality, integrity, and availability of affected systems.

Technical Details of CVE-2021-32759

This section will delve into the specific technical details of the vulnerability.

Vulnerability Description

The issue stemmed from missing sanitation in data flow, enabling admin users to bypass security controls and upload malicious files.

Affected Systems and Versions

OpenMage magento-lts versions prior to 19.4.15 and 20.0.13 were affected by this vulnerability.

Exploitation Mechanism

Admin users with high privileges could exploit the lack of input validation to upload executable files, posing a significant security risk.

Mitigation and Prevention

Here, we outline the necessary steps to mitigate the impact of CVE-2021-32759 and prevent similar vulnerabilities in the future.

Immediate Steps to Take

Ensure all OpenMage magento-lts installations are updated to versions 19.4.15 and 20.0.13 to patch the data flow sanitation issue.

Long-Term Security Practices

Implement strict input validation mechanisms and regularly update security patches to prevent potential exploitation.

Patching and Updates

Stay informed about security advisories and promptly apply patches released by OpenMage to address known vulnerabilities.