CVE-2021-23267 : Vulnerability Insights and Analysis

A vulnerability has been discovered in Crafter Studio of Crafter CMS that allows authenticated developers to execute OS commands. Here is all you need to know about CVE-2021-23267.

Understanding CVE-2021-23267

This section provides an overview of the CVE-2021-23267 vulnerability in Crafter Studio.

What is CVE-2021-23267?

CVE-2021-23267 is an Improper Control of Dynamically-Managed Code Resources vulnerability in Crafter Studio of Crafter CMS. This flaw enables authenticated developers to execute OS commands via FreeMarker static methods.

The Impact of CVE-2021-23267

The vulnerability has a CVSS base score of 7.6, making it a high-severity issue. It has a significant impact on confidentiality, integrity, and availability, with high privileges required for exploitation and user interaction.

Technical Details of CVE-2021-23267

This section dives into the technical aspects of the CVE-2021-23267 vulnerability.

Vulnerability Description

The vulnerability arises from improper control of dynamically-managed code resources, allowing for the execution of OS commands.

Affected Systems and Versions

Crafter CMS version 3.1 with a version less than or equal to 3.1.17 is affected by this vulnerability.

Exploitation Mechanism

Authenticated developers can exploit this vulnerability by leveraging FreeMarker static methods to execute malicious OS commands.

Mitigation and Prevention

To safeguard systems from CVE-2021-23267, immediate actions must be taken followed by long-term security practices.

Immediate Steps to Take

Update Crafter CMS to version 3.1.17 or higher to patch the vulnerability.
Restrict access to the affected system to authorized personnel only.
Monitor system logs for any suspicious activity.

Long-Term Security Practices

Regularly audit and update software dependencies to prevent vulnerabilities.
Conduct security training for developers on secure coding practices.
Implement least privilege access controls to limit the impact of potential breaches.

Patching and Updates

Stay informed about security advisories and updates from Crafter Software to address emerging threats effectively. Perform regular vulnerability scans and apply patches promptly.