CVE-2023-23632 : Vulnerability Insights and Analysis

This CVE-2023-23632 pertains to a vulnerability found in BeyondTrust Privileged Remote Access (PRA) versions 22.2.x to 22.4.x, posing a risk of local authentication bypass. Attackers may exploit this flaw in the BYOT shell jump sessions, enabling unauthorized access by guessing solely the first character of the secret.

Understanding CVE-2023-23632

This section delves into the specifics of CVE-2023-23632 regarding its nature and impact.

What is CVE-2023-23632?

The CVE-2023-23632 vulnerability is centered around a local authentication bypass in BeyondTrust Privileged Remote Access (PRA) versions 22.2.x to 22.4.x. It involves a flawed secret verification process within the BYOT shell jump sessions, empowering attackers to gain unauthorized access by accurately guessing only the first character of the secret.

The Impact of CVE-2023-23632

The impact of CVE-2023-23632 is significant as it exposes systems utilizing the vulnerable versions of BeyondTrust PRA to the risk of unauthorized access. This exploitation could lead to potential security breaches and compromise sensitive information, emphasizing the critical need for mitigation strategies.

Technical Details of CVE-2023-23632

In this section, we delve deeper into the technical aspects of CVE-2023-23632, outlining the vulnerability description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The vulnerability in BeyondTrust Privileged Remote Access (PRA) versions 22.2.x to 22.4.x allows for a local authentication bypass through a flawed secret verification process in the BYOT shell jump sessions. This flaw enables unauthorized access by correctly guessing only the first character of the secret, bypassing the intended authentication controls.

Affected Systems and Versions

The affected systems include all installations running BeyondTrust Privileged Remote Access (PRA) versions 22.2.x to 22.4.x. Users utilizing these versions are at risk of exploitation and unauthorized access due to the identified vulnerability.

Exploitation Mechanism

Attackers can exploit CVE-2023-23632 by leveraging the flawed secret verification process in the BYOT shell jump sessions of BeyondTrust PRA versions 22.2.x to 22.4.x. By accurately guessing the first character of the secret, unauthorized access to jump items can be achieved, compromising system security.

Mitigation and Prevention

To address CVE-2023-23632 and enhance system security, the following mitigation and prevention measures are recommended:

Immediate Steps to Take

Immediately update BeyondTrust Privileged Remote Access (PRA) to a patched version that resolves the local authentication bypass vulnerability.
Implement additional layers of authentication and access controls to mitigate unauthorized access attempts.
Monitor system logs and user activity for any signs of unauthorized access or unusual behavior.

Long-Term Security Practices

Regularly conduct security assessments and audits to identify and address potential vulnerabilities within the system.
Educate users on secure authentication practices and the importance of maintaining strong passwords and access controls.
Stay informed about security updates and patches released for BeyondTrust PRA to promptly address any known vulnerabilities.

Patching and Updates

Ensure timely application of security patches and updates provided by BeyondTrust for Privileged Remote Access (PRA) to address CVE-2023-23632 and other known security vulnerabilities. Regularly check for new patches and updates to maintain a secure system environment.