CVE-2021-39312 : Vulnerability Insights and Analysis

True Ranker plugin version 2.2.2 for WordPress has a vulnerability that allows arbitrary file access through a specific parameter. This article provides insights into the CVE-2021-39312 vulnerability.

Understanding CVE-2021-39312

CVE-2021-39312 affects the True Ranker plugin versions up to 2.2.2 for WordPress, enabling attackers to read sensitive files, such as wp-config.php, using a certain parameter in the examples.php file.

What is CVE-2021-39312?

The CVE-2021-39312 vulnerability in the True Ranker plugin <= 2.2.2 for WordPress allows unauthorized access to critical configuration files by manipulating the src parameter.

The Impact of CVE-2021-39312

The exploitation of CVE-2021-39312 can lead to severe consequences:

Confidential information disclosure
Unauthorized access to sensitive files
Risk of data manipulation and site takeover

Technical Details of CVE-2021-39312

This section dives deeper into the technical aspects of the CVE-2021-39312 vulnerability.

Vulnerability Description

The vulnerability arises from improper handling of file access requests, allowing attackers to traverse directories and read files they shouldn't have access to.

Affected Systems and Versions

Affected Product: True Ranker
Affected Version: <= 2.2.2

Exploitation Mechanism

Attackers exploit a specific parameter in the examples.php file to access files like wp-config.php, gaining unauthorized information.

Mitigation and Prevention

To safeguard your system from CVE-2021-39312, follow these mitigation strategies.

Immediate Steps to Take

Update the True Ranker plugin to version 2.2.4 or later
Monitor system logs for any unusual file access
Restrict access to sensitive configuration files

Long-Term Security Practices

Conduct regular security audits and vulnerability scans
Implement least privilege access controls
Educate users about safe configuration practices

Patching and Updates

Stay vigilant for security patches and updates from True Ranker to address CVE-2021-39312 and other potential vulnerabilities.