CVE-2021-24216 Explained : Impact and Mitigation

The All-in-One WP Migration WordPress plugin before 7.41 allows administrators to upload PHP files on their site due to lack of extension validation.

Understanding CVE-2021-24216

This CVE highlights a vulnerability in the All-in-One WP Migration WordPress plugin that could lead to Admin+ Arbitrary File Upload to Remote Code Execution.

What is CVE-2021-24216?

The vulnerability in All-in-One WP Migration before version 7.41 allows site administrators to upload PHP files even on multisite installations as it does not validate uploaded files' extensions properly.

The Impact of CVE-2021-24216

This security flaw could be exploited by attackers to upload malicious PHP files, leading to full site compromise and potential remote code execution.

Technical Details of CVE-2021-24216

This section delves deeper into the technical aspects of the vulnerability.

Vulnerability Description

The vulnerability arises from the plugin's failure to validate file extensions on upload, enabling the uploading of PHP files.

Affected Systems and Versions

All-in-One WP Migration versions less than 7.41 are affected, creating a risk for all users using versions below this.

Exploitation Mechanism

Attackers can exploit this issue by uploading malicious PHP files, which can then be used to execute arbitrary remote code commands on the server.

Mitigation and Prevention

Protecting your WordPress site from CVE-2021-24216 is crucial to maintain site security.

Immediate Steps to Take

Update the All-in-One WP Migration plugin to version 7.41 or later. Validate file extensions and implement file upload restrictions.

Long-Term Security Practices

Regularly monitor for plugin updates and security patches. Educate administrators on safe file upload practices and conduct security audits.

Patching and Updates

Stay informed about security advisories related to the All-in-One WP Migration plugin and promptly apply patches released by the plugin developer.