CVE-2023-4640 : What You Need to Know

This CVE record was assigned by Yugabyte on August 30, 2023, and was published on the same day. The vulnerability affects YugabyteDB Anywhere versions 2.0.0 through 2.17.3. It is related to an authentication bypass issue in the logging level controller.

Understanding CVE-2023-4640

This section delves into the details of CVE-2023-4640, outlining what the vulnerability entails and its potential impacts.

What is CVE-2023-4640?

The CVE-2023-4640 vulnerability revolves around the controller responsible for setting the logging level within YugabyteDB Anywhere. The issue arises from the lack of authorization checks to ensure user authentication. The controller does not include any checks to verify the user's authenticated status, leading to a potential security vulnerability. This vulnerability affects versions 2.0.0 through 2.17.3 of YugabyteDB Anywhere.

The Impact of CVE-2023-4640

The impact of CVE-2023-4640 is classified under CAPEC-115, which is an "Authentication Bypass" threat. This means that unauthorized users may exploit this vulnerability to bypass authentication controls, potentially gaining unauthorized access to the logging level settings in YugabyteDB Anywhere.

Technical Details of CVE-2023-4640

In this section, a detailed overview of the technical aspects of CVE-2023-4640 is provided, including the vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability arises from the logging level controller in YugabyteDB Anywhere lacking proper authorization checks, allowing unauthenticated users to manipulate logging settings without being verified.

Affected Systems and Versions

YugabyteDB Anywhere versions 2.0.0 through 2.17.3 are impacted by this vulnerability. Users utilizing these versions may be susceptible to the authentication bypass issue in the logging level controller.

Exploitation Mechanism

By exploiting the lack of authentication checks in the logging level controller, attackers can potentially manipulate logging settings and gain unauthorized access to sensitive information within YugabyteDB Anywhere.

Mitigation and Prevention

This section provides insights into how organizations and users can mitigate the risks associated with CVE-2023-4640 and prevent potential exploitation of the vulnerability.

Immediate Steps to Take

Immediate actions include applying security patches provided by Yugabyte for the affected versions. Organizations should also consider restricting access to the logging level controller to authenticated users only and monitoring for any unauthorized changes.

Long-Term Security Practices

Implementing strong access control mechanisms, regular security audits, and ensuring authentication requirements are enforced across all controllers can help prevent similar vulnerabilities in the future.

Patching and Updates

Regularly updating YugabyteDB Anywhere to the latest secure versions and promptly applying patches released by the vendor is crucial to addressing known vulnerabilities and enhancing the overall security posture of the system.