CVE-2021-24881 Explained : Impact and Mitigation

Passster < 3.5.5.9 - Protection Bypass & Arbitrary Post Access.

Understanding CVE-2021-24881

This CVE involves a vulnerability in the Passster WordPress plugin that allows unauthenticated users to bypass protection and access arbitrary posts.

What is CVE-2021-24881?

The Passster WordPress plugin before 3.5.5.9 fails to properly validate passwords and post visibility, enabling unauthorized users to view private content through a specially crafted request.

The Impact of CVE-2021-24881

This vulnerability poses a serious risk as it allows unauthorized access to sensitive information that should be restricted to authenticated users only.

Technical Details of CVE-2021-24881

The following technical aspects are relevant to understand this CVE:

Vulnerability Description

Passster plugin version less than 3.5.5.9 lacks adequate password validation and does not properly verify the visibility status of posts, enabling unauthorized access.

Affected Systems and Versions

The vulnerability affects Passster plugin versions prior to 3.5.5.9, leaving websites utilizing these versions exposed to the security risk.

Exploitation Mechanism

Exploiting this vulnerability involves crafting a specific request to the Passster plugin, allowing unauthenticated users to view private content.

Mitigation and Prevention

Taking immediate action is crucial to mitigate the risks associated with CVE-2021-24881.

Immediate Steps to Take

Website administrators should update Passster plugin to version 3.5.5.9 or newer to patch the vulnerability and prevent unauthorized access to private content.

Long-Term Security Practices

Implementing strong authentication mechanisms and regular security audits can enhance the overall security posture of WordPress websites.

Patching and Updates

Regularly monitoring for plugin updates and promptly applying patches is essential to prevent security vulnerabilities like CVE-2021-24881.