CVE-2023-28061 Explained : Impact and Mitigation

This CVE-2023-28061 article provides details about a vulnerability found in Dell BIOS, which could allow a local authenticated malicious user to modify a UEFI variable, posing a risk to system security.

Understanding CVE-2023-28061

The vulnerability identified as CVE-2023-28061 affects Dell BIOS, leading to improper input validation that could be exploited by a local authenticated malicious user with administrator privileges to manipulate a UEFI variable.

What is CVE-2023-28061?

CVE-2023-28061 refers to an improper input validation vulnerability in Dell BIOS. This security flaw could be leveraged by a local authenticated malicious user to potentially modify a UEFI variable, impacting the integrity of the system.

The Impact of CVE-2023-28061

The impact of CVE-2023-28061 is categorized as having a medium severity level. With a base score of 5.1, the vulnerability's integrity impact is considered high, while the privileges required for exploitation are also high. The attack complexity is low, and the attack vector is local.

Technical Details of CVE-2023-28061

This section delves into the specific technical aspects of CVE-2023-28061, including the vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability in Dell BIOS stems from improper input validation, allowing a local authenticated malicious user with administrator privileges to potentially alter a UEFI variable, posing a security risk.

Affected Systems and Versions

The vulnerability impacts all versions of CPG BIOS by Dell, making them susceptible to exploitation by local authenticated malicious users seeking to manipulate UEFI variables.

Exploitation Mechanism

To exploit CVE-2023-28061, a local authenticated malicious user with administrator privileges needs to input crafted data via the vulnerability in Dell BIOS, enabling them to modify UEFI variables and potentially compromise system integrity.

Mitigation and Prevention

In light of CVE-2023-28061, implementing mitigation strategies and preventive measures is crucial to safeguard systems against potential exploitation and security breaches.

Immediate Steps to Take

Users are advised to apply security updates provided by Dell promptly to address the vulnerability in BIOS and prevent unauthorized manipulation of UEFI variables by malicious entities.

Long-Term Security Practices

Establishing strong access controls, regularly monitoring system activity, and conducting security assessments can enhance overall system security and reduce the likelihood of successful exploitation of vulnerabilities like CVE-2023-28061.

Patching and Updates

Ensuring that systems are regularly updated with the latest security patches and firmware updates from Dell is essential to mitigate the risk posed by vulnerabilities such as CVE-2023-28061 and enhance system security posture.