CVE-2023-45807 : Vulnerability Insights and Analysis

An OpenSearch issue with tenant read-only permissions has been identified, potentially allowing unauthorized users to perform certain operations on index metadata in OpenSearch Dashboards. This article provides an overview of CVE-2023-45807, its impact, technical details, and mitigation strategies.

Understanding CVE-2023-45807

OpenSearch, a community-driven open-source fork of Elasticsearch and Kibana, contains a vulnerability related to tenant read-only permissions that could lead to unauthorized actions on index metadata.

What is CVE-2023-45807?

OpenSearch Dashboards has a flaw where users with read-only access to a tenant can manipulate index metadata, affecting the availability of dashboards and visualizations. The issue does not impact index data but can disrupt dashboard functionality.

The Impact of CVE-2023-45807

Authenticated users with read-only access could perform create, edit, and delete operations on index metadata, potentially making dashboards and visualizations unavailable. However, this vulnerability does not expose additional data beyond the user's existing read permissions.

Technical Details of CVE-2023-45807

The vulnerability is related to an improper implementation of tenant permissions within OpenSearch Dashboards, allowing unauthorized actions on index metadata.

Vulnerability Description

The issue enables users with read-only access to manipulate index metadata, affecting the availability of dashboards and visualizations while not compromising actual index data.

Affected Systems and Versions

Versions prior to 1.3.14.0 and between 2.0.0.0 and 2.11.0.0 of OpenSearch security are affected by this vulnerability.

Exploitation Mechanism

Authenticated users with read-only access exploit the flaw to perform unauthorized operations on index metadata within specific tenants.

Mitigation and Prevention

To address CVE-2023-45807, take immediate steps to secure your OpenSearch deployment and prevent unauthorized actions.

Immediate Steps to Take

Disable the tenants functionality for the cluster to mitigate the risk of unauthorized operations on index metadata. Consider applying the available patches to secure your system.

Long-Term Security Practices

Regularly update your OpenSearch security software to the latest version to ensure protection against known vulnerabilities. Monitor security advisories and apply security best practices to safeguard your environment.

Patching and Updates

Versions 1.3.14 and 2.11.0 include fixes for CVE-2023-45807. Ensure timely application of patches and updates to maintain the security of your OpenSearch deployment.