CVE-2023-28027 : Vulnerability Insights and Analysis

This CVE-2023-28027 article provides detailed information about a vulnerability found in Dell BIOS, which could be exploited by a local authenticated malicious user with administrator privileges to modify a UEFI variable.

Understanding CVE-2023-28027

This section will delve into the specifics of CVE-2023-28027, including the vulnerability description, impact, affected systems, and mitigation strategies.

What is CVE-2023-28027?

The CVE-2023-28027 vulnerability is related to an improper input validation flaw within Dell BIOS. This flaw allows a local authenticated malicious user with administrator privileges to potentially exploit the vulnerability to modify a UEFI variable, which could lead to unauthorized changes in the system.

The Impact of CVE-2023-28027

The impact of CVE-2023-28027 is considered medium severity with a base score of 5.1. The integrity impact is rated as high, while the confidentiality impact is assessed as none. This vulnerability could be exploited locally, with a low attack complexity and impact on availability being low.

Technical Details of CVE-2023-28027

This section will provide more technical insights into CVE-2023-28027, including vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The Dell BIOS vulnerability in CVE-2023-28027 stems from improper input validation, allowing unauthorized modification of UEFI variables by a local authenticated malicious user with administrator privileges.

Affected Systems and Versions

The vulnerability affects all versions of the CPG BIOS designed by Dell. Users utilizing these BIOS versions are susceptible to exploitation by malicious actors with the appropriate credentials.

Exploitation Mechanism

To exploit CVE-2023-28027, a local authenticated malicious user with administrator privileges needs to leverage the improper input validation vulnerability present in Dell BIOS. This exploitation could potentially result in unauthorized modification of UEFI variables.

Mitigation and Prevention

This section outlines the steps that users and administrators can take to mitigate the risks associated with CVE-2023-28027 and prevent potential exploitation.

Immediate Steps to Take

Users should promptly apply the security update provided by Dell to address the improper input validation vulnerability in the BIOS. It is crucial to ensure that systems are patched to prevent unauthorized modifications to UEFI variables.

Long-Term Security Practices

To enhance overall system security, organizations should practice regular security assessments, implement least privilege access controls, and promote user awareness regarding potential vulnerabilities and exploitation techniques.

Patching and Updates

Regularly monitoring vendor advisories and applying security patches promptly is essential to mitigate the risks posed by vulnerabilities such as CVE-2023-28027. Maintaining up-to-date security measures can prevent unauthorized access and modifications to critical system components.