CVE-2022-0403 : Security Advisory and Response

The Library File Manager WordPress plugin before version 5.2.3 is affected by a vulnerability that allows authenticated users, even subscribers, to perform arbitrary file creation, upload, and deletion. The plugin uses an outdated version of the elFinder library, lacking proper authorization and CSRF checks.

Understanding CVE-2022-0403

This CVE describes a security issue in the Library File Manager WordPress plugin that could be exploited by authenticated users with low privileges.

What is CVE-2022-0403?

The CVE-2022-0403 vulnerability in the Library File Manager plugin allows subscribers and other authenticated users to create, upload, and delete files and folders due to missing authorization and CSRF checks.

The Impact of CVE-2022-0403

The impact of this vulnerability is significant as it enables unauthorized users to manipulate files and folders within the WordPress installation, potentially leading to data loss or unauthorized access.

Technical Details of CVE-2022-0403

This section details the vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability arises from the outdated elFinder library used by the plugin, coupled with the absence of authorization and CSRF checks in its connector AJAX action, allowing low-privileged authenticated users to perform file manipulation.

Affected Systems and Versions

The affected system is the Library File Manager WordPress plugin version less than 5.2.3.

Exploitation Mechanism

Exploiting this vulnerability involves leveraging the lack of proper authorization and CSRF protection in the plugin to manipulate files and folders.

Mitigation and Prevention

To secure your system against CVE-2022-0403, immediate steps, long-term security practices, and patching instructions are crucial.

Immediate Steps to Take

Immediately update the Library File Manager plugin to version 5.2.3 or higher to mitigate the vulnerability. Monitor user activities for suspicious behavior.

Long-Term Security Practices

Implement proper authorization and CSRF protection mechanisms in all plugins and regularly audit user privileges to prevent unauthorized file manipulation.

Patching and Updates

Regularly check for plugin updates and apply patches promptly to address known security issues and protect your WordPress installation.