CVE-2021-24623 : Security Advisory and Response

WordPress Advanced Ticket System plugin before version 1.0.64 is vulnerable to Authenticated Stored Cross-Site Scripting (XSS) attacks due to unsanitized form values. This allows privileged users to execute malicious scripts even with restricted capabilities.

Understanding CVE-2021-24623

This CVE relates to a security vulnerability found in the WordPress Advanced Ticket System plugin, enabling XSS attacks by high privilege users.

What is CVE-2021-24623?

The WordPress Advanced Ticket System plugin, specifically versions below 1.0.64, fails to properly sanitize form values. This oversight permits attackers with elevated privileges to launch XSS attacks, circumventing restrictions.

The Impact of CVE-2021-24623

The vulnerability exposes websites to potential compromise by allowing attackers to inject and execute malicious scripts through the plugin, posing a risk to data integrity and user security.

Technical Details of CVE-2021-24623

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

Vulnerability Description

The issue arises from the plugin's failure to sanitize form inputs, enabling the injection of malicious scripts by authenticated users with high privileges.

Affected Systems and Versions

The WordPress Advanced Ticket System plugin versions prior to 1.0.64 are affected by this vulnerability.

Exploitation Mechanism

Attackers leverage the lack of input sanitization in the plugin to embed harmful scripts, ultimately executing unauthorized actions on the targeted website.

Mitigation and Prevention

To address and mitigate the risks associated with CVE-2021-24623, users and administrators should take immediate and long-term security measures.

Immediate Steps to Take

Update the plugin to version 1.0.64 or newer to patch the security flaw.
Monitor user interactions and suspicious activities on the website.
Implement strict content security policies to mitigate XSS risks.

Long-Term Security Practices

Regularly audit and review plugins for security vulnerabilities.
Educate users on safe browsing practices and recognizing potential threats.
Employ web application firewalls to filter and block malicious traffic.

Patching and Updates

Stay informed about security updates for the WordPress Advanced Ticket System plugin to promptly apply patches and enhance website security.