CVE-2021-25101 Explained : Impact and Mitigation

A detailed overview of CVE-2021-25101, a vulnerability in the Anti-Malware Security and Brute-Force Firewall WordPress plugin before version 4.20.94 that can lead to a Reflected Cross-Site Scripting (XSS) attack.

Understanding CVE-2021-25101

This section provides insights into the nature and impact of the CVE-2021-25101 vulnerability.

What is CVE-2021-25101?

The Anti-Malware Security and Brute-Force Firewall WordPress plugin before version 4.20.94 is vulnerable to a Reflected Cross-Site Scripting (XSS) due to improper sanitization and escaping of POST data.

The Impact of CVE-2021-25101

The presence of a specific parameter value, accessible to admin users, enables an admin to exploit this vulnerability against another admin user.

Technical Details of CVE-2021-25101

This section delves into the technical aspects of CVE-2021-25101.

Vulnerability Description

The vulnerability lies in how the plugin handles POST data, allowing for the injection of malicious scripts, potentially compromising the security of admin pages.

Affected Systems and Versions

The Anti-Malware Security and Brute-Force Firewall plugin versions prior to 4.20.94 are affected by this XSS vulnerability.

Exploitation Mechanism

Admin users with access to the specific parameter can exploit the vulnerability to execute malicious scripts on other admin user accounts.

Mitigation and Prevention

Discover how to secure your systems against CVE-2021-25101.

Immediate Steps to Take

Immediately update the Anti-Malware Security and Brute-Force Firewall plugin to version 4.20.94 or higher to mitigate the XSS risk.

Long-Term Security Practices

Implement regular security audits and educate users about safe practices to prevent XSS attacks.

Patching and Updates

Stay informed about security patches and updates for the plugin to ensure ongoing protection against vulnerabilities.