CVE-2023-0273 : Security Advisory and Response

This CVE, assigned by WPScan, involves a vulnerability in the Custom Content Shortcode WordPress plugin version 4.0.2 and below. The flaw could allow users with contributor privileges or higher to execute Stored Cross-Site Scripting attacks.

Understanding CVE-2023-0273

This section delves into the specifics of the CVE-2023-0273 vulnerability.

What is CVE-2023-0273?

CVE-2023-0273 is a vulnerability in the Custom Content Shortcode WordPress plugin, allowing users with specific roles to carry out Stored Cross-Site Scripting attacks. This could lead to malicious code execution in the context of a user's browser.

The Impact of CVE-2023-0273

The impact of this vulnerability is significant as it enables attackers with contributor-level access or higher to inject malicious scripts into pages or posts, potentially leading to unauthorized actions on the website and harm to users.

Technical Details of CVE-2023-0273

This section provides technical insights into the CVE-2023-0273 vulnerability.

Vulnerability Description

The Custom Content Shortcode plugin version 4.0.2 and earlier fails to properly validate and escape certain shortcode attributes, creating an opening for stored Cross-Site Scripting attacks by privileged users.

Affected Systems and Versions

The affected system is the Custom Content Shortcode WordPress plugin with versions ranging from 0 to 4.0.2. Users utilizing these versions are at risk of exploitation if the vulnerability is not addressed.

Exploitation Mechanism

Exploiting CVE-2023-0273 involves crafting malicious input within the plugin's shortcode attributes, which, when executed, can lead to the injection of harmful scripts on pages or posts.

Mitigation and Prevention

Understanding how to mitigate the CVE-2023-0273 vulnerability is crucial to maintaining the security of WordPress websites.

Immediate Steps to Take

Website administrators should promptly update the Custom Content Shortcode plugin to a secure version beyond 4.0.2, implement web application firewalls, and monitor for any suspicious activities on their websites.

Long-Term Security Practices

Establishing regular security audits, educating users about safe content creation practices, and keeping abreast of plugin updates and security patches are essential for preventing similar vulnerabilities in the future.

Patching and Updates

To address CVE-2023-0273, it is imperative to install the latest patched version of the Custom Content Shortcode plugin, ensuring that the vulnerability is remediated and the website is safeguarded against potential attacks.