CVE-2021-24433 : Security Advisory and Response

A stored cross-site scripting vulnerability in Simple Sort&Search <= 0.0.3 plugin can allow users with low roles to execute malicious scripts, impacting WordPress sites.

Understanding CVE-2021-24433

This CVE identifies a security flaw in the Simple Sort&Search WordPress plugin, potentially leading to stored cross-site scripting attacks.

What is CVE-2021-24433?

The vulnerability in the Simple Sort&Search plugin allows unauthorized users, like Contributors, to inject and store malicious scripts, posing a risk to website security.

The Impact of CVE-2021-24433

The impact of this CVE is significant as it enables attackers to execute harmful scripts within the context of the vulnerable WordPress site, compromising its integrity.

Technical Details of CVE-2021-24433

This section outlines the specific technical aspects of the CVE.

Vulnerability Description

The vulnerability arises from inadequate validation of the indexurl parameter in certain shortcodes, making it possible for attackers to inject malicious scripts.

Affected Systems and Versions

The vulnerability affects the Simple Sort&Search plugin versions up to and including 0.0.3.

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating the indexurl parameter in specific shortcodes to execute stored cross-site scripting attacks.

Mitigation and Prevention

To safeguard your website from CVE-2021-24433, follow these mitigation strategies.

Immediate Steps to Take

Update the Simple Sort&Search plugin to the latest version to eliminate the vulnerability.
Restrict user permissions to minimize the risk of unauthorized script injections.

Long-Term Security Practices

Regularly audit and review plugins for known vulnerabilities.
Educate users about safe practices to prevent XSS attacks.

Patching and Updates

Stay informed about plugin updates and security patches to promptly address any emerging vulnerabilities.