CVE-2021-43408 : Security Advisory and Response

The "Duplicate Post" WordPress plugin up to and including version 1.1.9 is vulnerable to SQL Injection. This vulnerability can be exploited by any authenticated user granted access to use the plugin. Learn more about the impact, technical details, and mitigation steps below.

Understanding CVE-2021-43408

The vulnerability in the Duplicate Post WordPress Plugin could allow an authenticated user to perform SQL Injection attacks, potentially compromising confidentiality and integrity.

What is CVE-2021-43408?

SQL Injection occurs when client-supplied data is included within an SQL query insecurely, enabling attackers to read, modify, and delete table data and access the local file system.

The Impact of CVE-2021-43408

Confidentiality Impact: High
Integrity Impact: High
Privileges Required: High
The vulnerability can be exploited by any authenticated user granted access to the plugin.

Technical Details of CVE-2021-43408

The following technical details provide insights into the specific aspects of this vulnerability.

Vulnerability Description

The vulnerability lies in the handling of user-supplied data in SQL queries within the plugin, allowing for SQL Injection attacks.

Affected Systems and Versions

Affected Product: Duplicate Post WordPress Plugin
Vendor: Copy Delete Posts
Vulnerable Versions: Up to and including 1.1.9

Exploitation Mechanism

Any authenticated user with access to the plugin can exploit this vulnerability, potentially gaining unauthorized access or performing malicious actions.

Mitigation and Prevention

Protect your systems against CVE-2021-43408 with the following mitigation strategies.

Immediate Steps to Take

Update the Duplicate Post plugin to version 1.2.0 or above to eliminate the vulnerability.
Limit plugin access to essential accounts and roles to reduce the attack surface.

Long-Term Security Practices

Regularly monitor and audit plugins for security vulnerabilities.
Educate users on safe practices and the importance of updating plugins promptly.

Patching and Updates

Stay informed about security advisories from plugin providers and apply patches promptly to secure your WordPress installations.