CVE-2023-3775 : What You Need to Know

This CVE involves a vulnerability in Vault Enterprise's Sentinel RGP Policies that allowed for Cross-Namespace Denial of Service. The issue was discovered and published by HashiCorp on July 19, 2023, with the details made public on September 28, 2023.

Understanding CVE-2023-3775

This section delves into the specifics of CVE-2023-3775 and its implications.

What is CVE-2023-3775?

A Vault Enterprise Sentinel Role Governing Policy created to restrict access to resources in one namespace could be misapplied to requests in an unrelated namespace, potentially leading to a denial of service attack.

The Impact of CVE-2023-3775

The vulnerability could be exploited to disrupt services, affecting the availability of the affected systems running vulnerable versions of Vault Enterprise.

Technical Details of CVE-2023-3775

Let's explore the technical aspects of CVE-2023-3775 to gain a deeper understanding of the issue.

Vulnerability Description

The improper implementation of Sentinel RGP Policies in Vault Enterprise allowed for the unauthorized application of access restrictions across different namespaces, opening the door to potential denial of service attacks.

Affected Systems and Versions

Vendor: HashiCorp
Product: Vault Enterprise
Platforms: Windows, MacOS, Linux, x86, ARM, 64-bit, 32-bit
Affected Versions:
Version 1.14.0 (less than 1.14.4)
Version 1.13.0 (less than 1.13.8)
Version 0.11.0 (less than 1.13.0)

Exploitation Mechanism

The vulnerability could be exploited by malicious actors to bypass namespace restrictions, leading to denial of service scenarios within the affected Vault Enterprise instances.

Mitigation and Prevention

Understanding how to mitigate and prevent CVE-2023-3775 is crucial for ensuring system security.

Immediate Steps to Take

Upgrade Vault Enterprise to versions 1.15.0, 1.14.4, or 1.13.8 to address the vulnerability.
Implement proper access controls and review Sentinel RGP policies to prevent unauthorized application across namespaces.

Long-Term Security Practices

Regularly update and patch Vault Enterprise to stay protected from known vulnerabilities. Enhance monitoring and auditing of access controls to detect and prevent unauthorized policy applications.

Patching and Updates

Ensure prompt installation of security patches and updates provided by HashiCorp for Vault Enterprise to address security vulnerabilities and enhance system security.