CVE-2023-28054 : Exploit Details and Defense Strategies

This CVE record details a vulnerability found in Dell BIOS that can be exploited by a local authenticated malicious user with administrator privileges to modify a UEFI variable.

Understanding CVE-2023-28054

This section provides an overview of the vulnerability, its impact, technical details, and mitigation strategies.

What is CVE-2023-28054?

CVE-2023-28054 is a vulnerability in Dell BIOS that arises from improper input validation. It allows a local authenticated malicious user with administrator privileges to potentially exploit the vulnerability to modify a UEFI variable.

The Impact of CVE-2023-28054

The impact of this vulnerability is classified as medium severity with a base score of 5.1. It poses a risk to the integrity of affected systems, as an attacker with high privileges can manipulate UEFI variables. The confidentiality impact is none, and the availability impact is low.

Technical Details of CVE-2023-28054

This section delves into the specifics of the vulnerability, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The vulnerability in Dell BIOS is due to improper input validation, which can be leveraged by a local authenticated malicious user to modify a UEFI variable. This can lead to unauthorized system changes and potential security risks.

Affected Systems and Versions

The vulnerability impacts all versions of CPG BIOS by Dell. Users of affected systems should take immediate action to mitigate the risk posed by this vulnerability.

Exploitation Mechanism

To exploit CVE-2023-28054, a local authenticated malicious user with administrator privileges needs to manipulate the UEFI variable through the vulnerability present in Dell BIOS. This unauthorized modification can compromise system integrity.

Mitigation and Prevention

In response to CVE-2023-28054, users and organizations can take proactive measures to reduce the risk and safeguard their systems.

Immediate Steps to Take

Update Dell BIOS: Apply the security update provided by Dell to address the improper input validation vulnerability.
Monitor System Activity: Keep track of system changes to detect any unauthorized modifications.
Limit Administrator Privileges: Restrict access to high-privilege accounts to minimize the impact of potential exploits.

Long-Term Security Practices

Regular Security Audits: Conduct routine security audits to identify and address vulnerabilities in system configurations.
Employee Training: Educate users on best practices for system security and the risks associated with improper use of administrator privileges.

Patching and Updates

Stay informed about security advisories from Dell and other relevant sources to promptly apply patches and updates that address known vulnerabilities, reducing the risk of exploitation.