CVE-2021-24282 : Vulnerability Insights and Analysis

Redirection for Contact Form 7 plugin before version 2.3.4 is vulnerable to Unprotected AJAX Actions, allowing authenticated users to execute malicious actions. Learn about the impact, technical details, and mitigation steps below.

Understanding CVE-2021-24282

This CVE affects the Redirection for Contact Form 7 WordPress plugin before version 2.3.4 due to incorrect authorization, potentially leading to unauthorized actions by authenticated users.

What is CVE-2021-24282?

The vulnerability in the plugin allows any authenticated user, like a subscriber, to exploit various AJAX actions for malicious purposes, such as manipulating plugin settings and form actions.

The Impact of CVE-2021-24282

An attacker could abuse the vulnerability to reset plugin settings and add unauthorized actions to forms, compromising the integrity and security of the affected WordPress sites.

Technical Details of CVE-2021-24282

The technical aspects of the CVE include:

Vulnerability Description

In Redirection for Contact Form 7 plugin before 2.3.4, various AJAX actions can be misused by authenticated users, posing a risk of unauthorized access and manipulation.

Affected Systems and Versions

The vulnerability affects versions of the plugin prior to 2.3.4, implying that sites running outdated versions are at risk of exploitation.

Exploitation Mechanism

Attackers can leverage AJAX actions like wpcf7r_reset_settings to alter plugin configurations, potentially leading to unauthorized activities on the affected WordPress instances.

Mitigation and Prevention

To safeguard your WordPress site from CVE-2021-24282, consider the following measures:

Immediate Steps to Take

Update the Redirection for Contact Form 7 plugin to version 2.3.4 to patch the vulnerability and prevent exploitation.
Monitor user actions on the site for any suspicious activities that could indicate unauthorized access.

Long-Term Security Practices

Regularly update all installed plugins and themes to mitigate the risk of known vulnerabilities.
Implement strict access control mechanisms to limit the privileges of authenticated users and prevent unauthorized actions.

Patching and Updates

Stay informed about security updates for WordPress plugins and apply patches promptly to address vulnerabilities and enhance the overall security posture of your website.