CVE-2022-1393 : Security Advisory and Response

WordPress Subtitle plugin before version 3.4.1 is affected by a stored Cross-Site Scripting (XSS) vulnerability that allows authenticated users with low roles like contributors to exploit it. The plugin adds a subtitle field and displays it using a shortcode, leaving the subtitle vulnerable when updating directly from the post meta update button.

Understanding CVE-2022-1393

WordPress Subtitle plugin version < 3.4.1 is susceptible to Cross-Site Scripting attacks due to improper sanitization of the subtitle field, making it exploitable by authenticated users with low privileges.

What is CVE-2022-1393?

The CVE-2022-1393 vulnerability in the WP Subtitle WordPress plugin before version 3.4.1 enables authenticated low-privileged users to execute Cross-Site Scripting attacks via a specially crafted subtitle field.

The Impact of CVE-2022-1393

The impact of CVE-2022-1393 allows malicious contributors or similar low-privileged users to inject and execute arbitrary scripts, leading to potential website defacement, data theft, or unauthorized actions.

Technical Details of CVE-2022-1393

The technical details of CVE-2022-1393 include a vulnerable version (< 3.4.1) of the WP Subtitle plugin, where the subtitle field is not sanitized during direct updates, exposing the site to Cross-Site Scripting attacks.

Vulnerability Description

The vulnerability originates from the improper sanitization of the subtitle field in the WP Subtitle WordPress plugin version < 3.4.1, enabling attackers to inject malicious scripts.

Affected Systems and Versions

The WP Subtitle plugin versions earlier than 3.4.1 are affected, making websites using these versions susceptible to Cross-Site Scripting attacks.

Exploitation Mechanism

Authenticated users with low roles, such as contributors, can exploit the vulnerability by directly updating the subtitle field, bypassing the sanitization process.

Mitigation and Prevention

To mitigate the risks associated with CVE-2022-1393, immediate steps should be taken to secure the WordPress Subtitle plugin and prevent further exploitation.

Immediate Steps to Take

Website administrators should update the WP Subtitle plugin to the latest version (3.4.1) to patch the vulnerability and ensure proper sanitization of user inputs.

Long-Term Security Practices

Implement regular security audits and monitor user input fields for potential vulnerabilities to prevent similar Cross-Site Scripting issues in the future.

Patching and Updates

Stay informed about security updates released by plugin developers and apply patches promptly to protect your website from known vulnerabilities.