CVE-2023-28050 : What You Need to Know

This CVE record was assigned by Dell and published on June 23, 2023. It pertains to an improper input validation vulnerability in Dell BIOS that could be exploited by a local authenticated malicious user with administrator privileges to modify a UEFI variable.

Understanding CVE-2023-28050

This section delves into the details of CVE-2023-28050, highlighting its significance and potential impact.

What is CVE-2023-28050?

CVE-2023-28050 involves an improper input validation vulnerability in Dell BIOS, which could be abused by a local authenticated malicious user with administrator privileges to tamper with a UEFI variable.

The Impact of CVE-2023-28050

The impact of this vulnerability could lead to unauthorized modifications to the UEFI variable, potentially compromising the integrity of the system. It poses a medium severity risk with a CVSS base score of 5.1.

Technical Details of CVE-2023-28050

In this section, we will explore the technical aspects of CVE-2023-28050, including the vulnerability description, affected systems and versions, and exploitation mechanism.

Vulnerability Description

The vulnerability in Dell BIOS results from improper input validation, allowing an attacker to manipulate UEFI variables, potentially leading to unauthorized system changes.

Affected Systems and Versions

The vulnerability impacts all versions of CPG BIOS by Dell, making them susceptible to exploitation by a local authenticated malicious user with elevated privileges.

Exploitation Mechanism

To exploit CVE-2023-28050, a local authenticated malicious user with administrator privileges needs to leverage the improper input validation vulnerability in Dell BIOS to modify UEFI variables.

Mitigation and Prevention

This section outlines the steps to mitigate and prevent the exploitation of CVE-2023-28050, focusing on immediate actions and long-term security practices.

Immediate Steps to Take

Dell recommends applying the security update provided to address the improper input validation vulnerability in Dell BIOS promptly.
Limit access to system administration privileges to reduce the risk of local authenticated users exploiting the vulnerability.

Long-Term Security Practices

Regularly update BIOS and firmware to patch known vulnerabilities and enhance system security.
Implement robust access control policies to restrict privileged access and minimize the impact of potential exploits.

Patching and Updates

Dell has released a security update (DSA-2023-099) to address the multiple improper input validation vulnerabilities in Dell client BIOS. Ensure you apply this update promptly to secure your system against CVE-2023-28050.