CVE-2021-34654 : Exploit Details and Defense Strategies

The Custom Post Type Relations WordPress plugin version 1.0 and below is susceptible to Reflected Cross-Site Scripting (XSS) through the cptr[name] parameter in the ~/pages/admin-page.php file. Attackers can exploit this vulnerability to inject malicious web scripts.

Understanding CVE-2021-34654

This section will delve into the details of CVE-2021-34654.

What is CVE-2021-34654?

The CVE-2021-34654 flaw is a Reflected Cross-Site Scripting (XSS) vulnerability in the Custom Post Type Relations WordPress plugin versions up to and including 1.0. It allows malicious actors to insert arbitrary web scripts.

The Impact of CVE-2021-34654

The impact of this vulnerability can lead to unauthorized script execution, potentially compromising the security and integrity of the affected WordPress websites.

Technical Details of CVE-2021-34654

In this section, we will explore the technical aspects of CVE-2021-34654.

Vulnerability Description

The vulnerability arises due to inadequate input validation of the cptr[name] parameter in the admin-page.php file, enabling attackers to execute XSS attacks.

Affected Systems and Versions

Custom Post Type Relations plugin versions up to and including 1.0 are affected by this XSS vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious scripts through the vulnerable cptr[name] parameter in the admin-page.php file.

Mitigation and Prevention

Learn how to mitigate and prevent the exploitation of CVE-2021-34654.

Immediate Steps to Take

To mitigate the risk, users are advised to uninstall the vulnerable Custom Post Type Relations plugin.

Long-Term Security Practices

Implementing secure coding practices and security audits can help prevent XSS vulnerabilities in WordPress plugins.

Patching and Updates

Regularly update and patch all installed plugins to safeguard against known vulnerabilities.