CVE-2022-0779 : Exploit Details and Defense Strategies

This article provides details about CVE-2022-0779, a vulnerability in the User Meta WordPress plugin that allows low privileged users to enumerate local files on the web server via path traversal payloads.

Understanding CVE-2022-0779

This CVE impacts the User Meta WordPress plugin versions prior to 2.4.4, enabling subscribers to perform local file enumeration attacks.

What is CVE-2022-0779?

The User Meta WordPress plugin before version 2.4.4 fails to validate the filepath parameter of its um_show_uploaded_file AJAX action. This oversight allows subscribers to enumerate local files on the web server through path traversal payloads.

The Impact of CVE-2022-0779

The vulnerability poses a risk by granting low privileged users unauthorized access to sensitive files stored on the server, potentially exposing critical information.

Technical Details of CVE-2022-0779

This section delves into the specific technical aspects of the CVE.

Vulnerability Description

The flaw arises due to the lack of proper validation for the filepath parameter in the um_show_uploaded_file AJAX action, facilitating path traversal attacks.

Affected Systems and Versions

The vulnerability affects User Meta WordPress plugin versions prior to 2.4.4.

Exploitation Mechanism

By manipulating the filepath parameter in the um_show_uploaded_file AJAX action, attackers can traverse directories and access unauthorized files on the server.

Mitigation and Prevention

To address CVE-2022-0779 and enhance security measures, users are advised to take the following steps.

Immediate Steps to Take

Update the User Meta plugin to version 2.4.4 or higher to mitigate the vulnerability.
Regularly monitor server logs for any suspicious file enumeration activities.

Long-Term Security Practices

Implement least privilege access controls to restrict user permissions.
Conduct regular security audits to identify and address potential vulnerabilities.

Patching and Updates

Stay informed about security patches and updates for the User Meta plugin to stay protected against emerging threats.