CVE-2021-24673 : Security Advisory and Response

A detailed insight into CVE-2021-24673, addressing the Appointment Hour Booking WordPress plugin vulnerability.

Understanding CVE-2021-24673

This CVE highlights an Authenticated Stored Cross-Site Scripting vulnerability in the Appointment Hour Booking WordPress plugin.

What is CVE-2021-24673?

The Appointment Hour Booking plugin before version 1.3.16 is susceptible to Stored Cross-Site Scripting attacks, enabling high privilege users to exploit certain Calendar Form settings.

The Impact of CVE-2021-24673

The vulnerability poses a severe risk as it allows users to execute malicious scripts, compromising the security and integrity of the affected website.

Technical Details of CVE-2021-24673

Exploring the technical aspects and implications of CVE-2021-24673.

Vulnerability Description

The flaw in versions earlier than 1.3.16 permits high privilege users to conduct Stored Cross-Site Scripting attacks by bypassing security restrictions.

Affected Systems and Versions

The vulnerability affects Appointment Hour Booking plugin versions less than 1.3.16, creating a security loophole for exploitation.

Exploitation Mechanism

Attackers with elevated privileges can leverage the unfiltered_html capability to inject and execute malicious scripts, compromising the site's security.

Mitigation and Prevention

Effective strategies to mitigate the risks associated with CVE-2021-24673.

Immediate Steps to Take

Website administrators should promptly update the Appointment Hour Booking plugin to version 1.3.16 or above to patch the vulnerability.

Long-Term Security Practices

Implement strict input validation mechanisms and regularly monitor and audit user input to prevent Cross-Site Scripting attacks.

Patching and Updates

Stay vigilant for security updates and promptly apply patches released by plugin developers to shield the website against potential exploits.