CVE-2021-36876 Explained : Impact and Mitigation

This article provides insights into CVE-2021-36876, a vulnerability found in the WordPress uListing plugin version <= 2.0.5, leading to multiple Cross-Site Request Forgery (CSRF) issues.

Understanding CVE-2021-36876

CVE-2021-36876 is a medium-severity vulnerability discovered on July 27, 2021, affecting the uListing WordPress plugin version <= 2.0.5. The lack of CSRF checks on plugin administration pages makes it vulnerable to exploitation.

What is CVE-2021-36876?

The vulnerability involves multiple Cross-Site Request Forgery (CSRF) flaws in the uListing plugin, enabling attackers to perform unauthorized actions on behalf of authenticated users without their consent or knowledge.

The Impact of CVE-2021-36876

With a CVSS base score of 5.4 (Medium severity), this vulnerability could result in unauthorized actions, data manipulation, and potential exposure of sensitive information on affected WordPress websites.

Technical Details of CVE-2021-36876

CVE-2021-36876 is characterized by the lack of CSRF checks on plugin administration pages in uListing WordPress plugin version <= 2.0.5.

Vulnerability Description

The presence of multiple CSRF vulnerabilities allows attackers to forge requests and perform malicious actions on the behalf of authorized users.

Affected Systems and Versions

The vulnerability affects WordPress uListing plugin version <= 2.0.5, exposing websites leveraging this plugin to CSRF attacks.

Exploitation Mechanism

By exploiting the CSRF vulnerabilities, threat actors can execute unauthorized actions, manipulate data, and compromise the integrity of the affected WordPress websites.

Mitigation and Prevention

To address CVE-2021-36876, immediate actions and long-term security practices are crucial.

Immediate Steps to Take

It is recommended to update the uListing plugin to version 2.0.6 or higher to mitigate the risk of CSRF attacks.

Long-Term Security Practices

Implement strict CSRF validation mechanisms, conduct security assessments regularly, and educate users on CSRF threats to enhance website security.

Patching and Updates

Regularly monitor security advisories, apply patches promptly, and keep all plugins and software up to date to prevent exploitation of known vulnerabilities.