CVE-2023-43066 Explained : Impact and Mitigation

Dell Unity prior to version 5.3.0.0.5.120 is affected by a Restricted Shell Bypass vulnerability. An authenticated, local attacker could exploit this vulnerability by authenticating to the device CLI and issuing certain commands.

Understanding CVE-2023-43066

This section will cover the details of CVE-2023-43066, including the impact, vulnerability description, affected systems, exploitation mechanism, mitigation, and prevention strategies.

What is CVE-2023-43066?

CVE-2023-43066 refers to a Restricted Shell Bypass vulnerability in Dell Unity versions prior to 5.3.0.0.5.120. This vulnerability could be exploited by an authenticated, local attacker through specific CLI commands.

The Impact of CVE-2023-43066

The impact of this vulnerability is rated as medium severity with a CVSS v3.1 base score of 5.1. It poses a risk to the integrity of affected systems, requiring high privileges but has a low availability impact.

Technical Details of CVE-2023-43066

Below are the technical details associated with CVE-2023-43066:

Vulnerability Description

The vulnerability involves a Restricted Shell Bypass issue in Dell Unity versions prior to 5.3.0.0.5.120, enabling authenticated local attackers to execute unauthorized commands.

Affected Systems and Versions

Dell Unity versions before 5.3.0.0.5.120 are susceptible to this vulnerability, while version 5.3.0.0.5.120 and above are considered unaffected.

Exploitation Mechanism

An authenticated, local attacker can exploit CVE-2023-43066 by authenticating to the device CLI and issuing specific commands that bypass the shell restrictions.

Mitigation and Prevention

To mitigate the risks associated with CVE-2023-43066, the following steps can be taken:

Immediate Steps to Take

Update Dell Unity to version 5.3.0.0.5.120 or later to prevent exploitation of the vulnerability.
Monitor and restrict CLI access to authorized personnel only.

Long-Term Security Practices

Regularly review and apply security updates provided by Dell for Unity systems.
Conduct security awareness training to educate users on best practices for managing and securing systems.

Patching and Updates

Refer to the Dell Security Advisory for CVE-2023-43066 to access the necessary security updates and patches.