CVE-2022-1777 : Vulnerability Insights and Analysis

This article provides insights into CVE-2022-1777, a vulnerability in the Filr WordPress plugin version before 1.2.2.1 that allows unauthorized AJAX actions by authenticated users, such as subscribers.

Understanding CVE-2022-1777

This section delves into the details of the security vulnerability present in the Filr Secure Document Library WordPress plugin.

What is CVE-2022-1777?

The Filr WordPress plugin version before 1.2.2.1 lacks proper authorization checks in certain AJAX actions, enabling any authenticated user, including subscribers, to execute these actions. Although protected with a nonce, the nonce is leaked on the dashboard, potentially enabling the upload of arbitrary HTML files and the deletion of files.

The Impact of CVE-2022-1777

The vulnerability in the Filr plugin can be exploited by authenticated users to perform unauthorized actions, compromising the security and integrity of the WordPress site.

Technical Details of CVE-2022-1777

In this section, we explore the technical aspects of CVE-2022-1777, including the vulnerability description, affected systems, and exploitation mechanism.

Vulnerability Description

The absence of proper authorization checks in certain AJAX actions of the Filr plugin version before 1.2.2.1 allows authenticated users to perform unauthorized actions, posing a security risk to the WordPress site.

Affected Systems and Versions

The vulnerability affects Filr - Secure Document Library plugin versions prior to 1.2.2.1, leaving them susceptible to exploitation by authenticated users.

Exploitation Mechanism

By leveraging the leaked nonce on the dashboard, authenticated users can upload arbitrary HTML files and delete files within the WordPress site, potentially leading to data breaches and integrity issues.

Mitigation and Prevention

This section provides guidance on mitigating the risks associated with CVE-2022-1777 and safeguarding WordPress sites from such vulnerabilities.

Immediate Steps to Take

WordPress site administrators should update the Filr plugin to version 1.2.2.1 or above to patch the vulnerability and prevent unauthorized AJAX actions by authenticated users.

Long-Term Security Practices

Implementing strict authorization mechanisms, monitoring plugin updates, and conducting security audits can enhance the long-term security posture of WordPress websites.

Patching and Updates

Regularly installing plugin updates, especially security patches, is crucial in addressing known vulnerabilities and strengthening the overall security of WordPress sites.