CVE-2020-25803 : Security Advisory and Response

Crafter CMS versions 3.0.27 and below, and 3.1.7 and below, are affected by an Improper Control of Dynamically-Managed Code Resources vulnerability that allows authenticated developers to execute OS commands via FreeMarker template exposed objects.

Understanding CVE-2020-25803

This CVE involves a security issue in Crafter Studio of Crafter CMS that enables attackers with developer privileges to run OS commands through deep inspection of FreeMarker template exposed objects.

What is CVE-2020-25803?

The vulnerability in Crafter CMS allows authenticated developers to execute OS commands via FreeMarker template exposed objects due to improper control of dynamically-managed code resources.

The Impact of CVE-2020-25803

The impact of this vulnerability is rated as MEDIUM with a CVSS base score of 4.2. The attack complexity is HIGH, requiring network access and high privileges, with a significant impact on availability.

Technical Details of CVE-2020-25803

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability arises from improper control of dynamically-managed code resources in Crafter Studio, enabling authenticated developers to execute OS commands.

Affected Systems and Versions

Affected Product: Crafter CMS
Vendor: Crafter Software
Versions:
3.0 versions prior to 3.0.27
3.1 versions prior to 3.1.7

Exploitation Mechanism

The vulnerability allows authenticated developers to execute OS commands by exploiting FreeMarker template exposed objects.

Mitigation and Prevention

Protect your systems from CVE-2020-25803 with these mitigation strategies.

Immediate Steps to Take

Update Crafter CMS to version 3.0.27 or 3.1.7 to patch the vulnerability.
Restrict developer privileges to minimize the risk of unauthorized OS command execution.

Long-Term Security Practices

Regularly monitor and audit code resources for any vulnerabilities.
Educate developers on secure coding practices to prevent similar issues in the future.

Patching and Updates

Apply security patches promptly to ensure your systems are protected against known vulnerabilities.