CVE-2023-32005 : What You Need to Know

A vulnerability has been identified in Node.js version 20, affecting users of the experimental permission model when the --allow-fs-read flag is used with a non-* argument.

Understanding CVE-2023-32005

This CVE highlights a flaw in the permission model that results in unauthorized retrieval of file stats through the

fs.statfs

API in Node.js 20.

What is CVE-2023-32005?

The vulnerability in CVE-2023-32005 stems from an inadequate permission model in Node.js 20, allowing malicious actors to access file stats without proper read access.

The Impact of CVE-2023-32005

This vulnerability affects all users utilizing the experimental permission model in Node.js version 20, potentially leading to unauthorized access to file statistics.

Technical Details of CVE-2023-32005

In this section, we will delve into the vulnerability description, affected systems, and the exploitation mechanism.

Vulnerability Description

The flaw allows unauthorized users to retrieve file stats through the

fs.statfs

API in Node.js 20, even without explicit read access to the files.

Affected Systems and Versions

Node.js version 20, specifically up to version 20.5.0, is impacted by this vulnerability when the experimental permission model is in use.

Exploitation Mechanism

Malicious actors exploit this vulnerability by leveraging the --allow-fs-read flag with a non-* argument in the experimental permission model.

Mitigation and Prevention

To secure your systems from CVE-2023-32005, follow these mitigation and prevention measures.

Immediate Steps to Take

Disable the experimental permission model in Node.js 20 and avoid using the --allow-fs-read flag with arbitrary arguments to prevent unauthorized access to file stats.

Long-Term Security Practices

Regularly update Node.js to the latest stable version, implement least privilege access, and monitor for unauthorized file stat retrievals.

Patching and Updates

Keep abreast of security advisories from Node.js and apply patches promptly to address security vulnerabilities.