CVE-2021-4338 : Security Advisory and Response
Understand the impact of CVE-2021-4338 on WordPress sites and learn how to mitigate the '404 to 301' plugin authorization bypass vulnerability to protect your website.
A detailed overview of CVE-2021-4338, covering its impact, technical details, mitigation steps, and more.
Understanding CVE-2021-4338
This section delves into the specifics of CVE-2021-4338, shedding light on its implications for affected systems and users.
What is CVE-2021-4338?
The vulnerability affects the '404 to 301 – Redirect, Log and Notify 404 Errors' plugin for WordPress, enabling authenticated attackers to perform unauthorized actions due to missing capability checks.
The Impact of CVE-2021-4338
Attackers can exploit this vulnerability in plugin versions up to and including 3.0.7 to access, create, and modify redirections without proper authorization.
Technical Details of CVE-2021-4338
Explore the technical aspects of CVE-2021-4338, including how the vulnerability operates within affected systems.
Vulnerability Description
The issue arises from a lack of capability verification in the 'open_redirect' and 'save_redirect' functions, allowing attackers with authenticated access to manipulate redirection settings.
Affected Systems and Versions
The '404 to 301' plugin versions up to 3.0.7 are vulnerable to this authorization bypass, putting WordPress sites at risk of unauthorized redirection activities.
Exploitation Mechanism
By leveraging this vulnerability, malicious actors could gain inappropriate access to redirection functionalities, compromising the integrity of the affected WordPress installations.
Mitigation and Prevention
Learn how to safeguard your systems and websites from the CVE-2021-4338 vulnerability through immediate actions and long-term security strategies.
Immediate Steps to Take
Website administrators should update the '404 to 301' plugin to a secure version, actively monitor for unauthorized redirection activity, and review access controls.
Long-Term Security Practices
Implement regular security audits, educate users on safe plugin usage, and maintain timely updates to ensure ongoing protection against emerging threats.
Patching and Updates
Stay informed about security patches released by plugin developers, promptly apply updates, and proactively address any newly discovered vulnerabilities.