CVE-2021-24781 Explained : Impact and Mitigation

The Image Source Control WordPress plugin before version 2.3.1 has a vulnerability that allows users with as low as Contributor role to change post meta fields of arbitrary posts they should not edit.

Understanding CVE-2021-24781

This CVE affects the Image Source Control plugin, enabling unauthorized users to modify post meta values.

What is CVE-2021-24781?

The CVE-2021-24781 vulnerability in Image Source Control plugin permits Contributors and above to alter post meta fields.

The Impact of CVE-2021-24781

This security issue lets unauthorized users manipulate post meta values, potentially leading to unauthorized changes on the WordPress site.

Technical Details of CVE-2021-24781

The vulnerability lies in versions prior to 2.3.1 of the Image Source Control WordPress plugin.

Vulnerability Description

Users with low privileges like Contributors can edit post meta fields, posing a risk of unauthorized data alterations.

Affected Systems and Versions

The affected version is Image Source Control plugin less than 2.3.1.

Exploitation Mechanism

Unauthorized users exploit this vulnerability by accessing and changing arbitrary post meta fields.

Mitigation and Prevention

To secure your WordPress site from CVE-2021-24781, immediate action and long-term practices are crucial.

Immediate Steps to Take

Update the Image Source Control plugin to version 2.3.1 or higher, and monitor user privileges closely to prevent unauthorized access.

Long-Term Security Practices

Regularly check for plugin updates, review user roles and permissions, and implement least privilege access.

Patching and Updates

Stay vigilant for security patches from plugin vendors and promptly apply them to keep your WordPress site secure.