CVE-2021-25021 Explained : Impact and Mitigation

A security vulnerability has been identified in the OMGF | Host Google Fonts Locally WordPress plugin before version 4.5.12. This vulnerability allows high privilege users to delete arbitrary folders via a path traversal vector when uninstalling the plugin.

Understanding CVE-2021-25021

This CVE discloses a flaw in the cache directory setting validation of the OMGF WordPress plugin, enabling malicious users to perform unauthorized folder deletion.

What is CVE-2021-25021?

The CVE-2021-25021 vulnerability exists in versions of the OMGF | Host Google Fonts Locally plugin prior to 4.5.12. It arises due to the plugin's failure to properly validate the cache directory setting.

The Impact of CVE-2021-25021

Exploitation of this vulnerability could lead to the deletion of essential folders on the host system by authenticated attackers with elevated privileges, compromising the integrity and availability of data.

Technical Details of CVE-2021-25021

This section delves into the specific technical aspects of the CVE, outlining the vulnerability, affected systems, and the exploitation mechanism.

Vulnerability Description

The vulnerability stems from the lack of cache directory setting validation in the OMGF | Host Google Fonts Locally WordPress plugin, allowing high privilege users to delete arbitrary folders during the uninstallation process.

Affected Systems and Versions

The issue affects versions of the OMGF plugin preceding 4.5.12. Users with administrative capabilities can exploit this flaw to delete directories outside of the plugin's designated scope.

Exploitation Mechanism

By manipulating the cache directory setting, attackers with admin privileges can traverse paths beyond the intended scope, causing unauthorized folder deletions on the server.

Mitigation and Prevention

To safeguard against potential exploitation of CVE-2021-25021, immediate actions and long-term security practices are recommended.

Immediate Steps to Take

Users are advised to update the OMGF plugin to version 4.5.12 or later to mitigate the vulnerability. Additionally, review and restrict user privileges to minimize the impact of such exploits.

Long-Term Security Practices

Implementing secure coding practices, conducting regular security audits, and staying informed about plugin updates and security patches are essential for maintaining a secure WordPress environment.

Patching and Updates

Regularly monitor for plugin updates and security advisories. Promptly apply patches and updates released by plugin vendors to address known vulnerabilities and enhance the security posture of WordPress websites.