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CVE-2023-28423 : Security Advisory and Response

Learn about CVE-2023-28423, a Cross-Site Scripting flaw in Prism Tech Studios' Modern Footnotes plugin for WordPress. Take immediate steps to update to version 1.4.16+.

This CVE-2023-28423 involves a Cross-Site Scripting (XSS) vulnerability in the Prism Tech Studios Modern Footnotes plugin version 1.4.15 and below for WordPress websites. The vulnerability allows unauthorized users with admin privileges to store malicious scripts, potentially leading to various attacks.

Understanding CVE-2023-28423

This section delves into the specifics of CVE-2023-28423, outlining its impact and technical details.

What is CVE-2023-28423?

The CVE-2023-28423 vulnerability is classified as a Cross-Site Scripting (XSS) flaw, specifically labeled as CAPEC-592 Stored XSS. It pertains to the Modern Footnotes plugin by Prism Tech Studios, affecting versions up to 1.4.15.

The Impact of CVE-2023-28423

This vulnerability has a Medium severity rating with a CVSS v3.1 base score of 5.9. It requires high privileges for exploitation and user interaction. The potential impact includes unauthorized script execution, compromising data integrity and confidentiality.

Technical Details of CVE-2023-28423

Understanding the technical aspects of CVE-2023-28423 is crucial in addressing and mitigating the risk it poses.

Vulnerability Description

The vulnerability allows attackers to carry out Stored Cross-Site Scripting (XSS) attacks when authenticated as admin or higher on affected WordPress sites using the Modern Footnotes plugin version 1.4.15 or earlier.

Affected Systems and Versions

The Modern Footnotes plugin by Prism Tech Studios version 1.4.15 and below for WordPress installations are susceptible to this XSS vulnerability.

Exploitation Mechanism

To exploit this vulnerability, an authenticated attacker with admin or higher privileges can store malicious scripts in the plugin, potentially leading to XSS attacks on users of the affected website.

Mitigation and Prevention

Mitigating CVE-2023-28423 requires immediate action to secure the affected systems and prevent potential exploitation.

Immediate Steps to Take

Website administrators are advised to update the Modern Footnotes plugin to version 1.4.16 or higher to mitigate the XSS vulnerability and enhance website security.

Long-Term Security Practices

Implementing strong authentication measures, regular security audits, and monitoring for suspicious activities can enhance the overall security posture of WordPress websites.

Patching and Updates

Regularly updating plugins, themes, and the WordPress core to the latest versions, along with promptly applying security patches, is essential to prevent exploitation of known vulnerabilities like CVE-2023-28423.

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