CVE-2021-24824 : Exploit Details and Defense Strategies

WordPress plugin Custom Content Shortcode before version 4.0.1 allows authenticated users with a role as low as contributor to access arbitrary post metadata, potentially leading to sensitive data disclosure.

Understanding CVE-2021-24824

This CVE describes an authorization vulnerability in the Custom Content Shortcode plugin for WordPress.

What is CVE-2021-24824?

The vulnerability in the Custom Content Shortcode WordPress plugin before version 4.0.1 enables authenticated users, starting from the contributor role, to retrieve arbitrary post metadata. This flaw could result in the exposure of sensitive data, such as email addresses from orders when integrated with WooCommerce.

The Impact of CVE-2021-24824

The impact of this vulnerability is significant as it allows users with limited privileges to access confidential information stored within WordPress post metadata. This could lead to data breaches, especially when combined with other plugins like WooCommerce.

Technical Details of CVE-2021-24824

This section provides more insights into the technical aspects of the CVE.

Vulnerability Description

The vulnerability lies in the [field] shortcode of the Custom Content Shortcode plugin, which fails to enforce proper authorization checks, allowing lower-privileged users to access and potentially exploit post metadata.

Affected Systems and Versions

The affected version is Custom Content Shortcode plugin before version 4.0.1. Users using versions prior to this are at risk of data exposure.

Exploitation Mechanism

Exploitation of this vulnerability involves utilizing the [field] shortcode with the plugin to access post metadata without proper authorization, leading to unauthorized data disclosure.

Mitigation and Prevention

To safeguard systems and data, immediate actions and long-term security measures are crucial.

Immediate Steps to Take

Users are advised to update the Custom Content Shortcode plugin to version 4.0.1 or newer to mitigate the vulnerability. It is also recommended to review and restrict user roles to prevent unauthorized access.

Long-Term Security Practices

Implement routine security audits, stay informed about plugin updates, and enforce the principle of least privilege to minimize the risk of unauthorized data access.

Patching and Updates

Regularly check for security patches and updates for all installed plugins, including Custom Content Shortcode, to address security vulnerabilities and enhance overall system security.