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CVE-2023-28029 : Exploit Details and Defense Strategies

Learn about CVE-2023-28029 affecting Dell BIOS, allowing local authenticated users to manipulate UEFI variables. Mitigation steps included.

This CVE-2023-28029 vulnerability involves an improper input validation issue in Dell BIOS that could be exploited by a local authenticated malicious user with administrator privileges to manipulate a UEFI variable.

Understanding CVE-2023-28029

This section delves into the details of the CVE-2023-28029 vulnerability, its impact, technical aspects, and mitigation strategies.

What is CVE-2023-28029?

The CVE-2023-28029 vulnerability is present in Dell BIOS and stems from improper input validation. This flaw could allow a local authenticated malicious user, possessing administrator privileges, to potentially modify a UEFI variable, posing a security risk to affected systems.

The Impact of CVE-2023-28029

With a CVSS v3.1 base score of 5.1, this vulnerability has a medium severity rating. It has a low attack complexity, requires high privileges, and impact integrity significantly. Although it poses a low availability impact and doesn't compromise confidentiality, the potential for unauthorized modification of UEFI variables can lead to unauthorized system changes and compromise system integrity.

Technical Details of CVE-2023-28029

This section provides detailed technical insights into the vulnerability.

Vulnerability Description

The vulnerability arises from improper input validation in Dell BIOS, enabling a local authenticated malicious user to manipulate a UEFI variable. This flaw could potentially lead to unauthorized system alterations and compromise system integrity.

Affected Systems and Versions

The vulnerability affects all versions of the CPG BIOS by Dell, putting systems with this configuration at risk of exploitation.

Exploitation Mechanism

Exploiting this vulnerability requires a local authenticated malicious user with administrator privileges, making it essential for organizations to implement security measures to prevent unauthorized access to systems.

Mitigation and Prevention

To address the CVE-2023-28029 vulnerability, organizations should take immediate steps, implement long-term security practices, and ensure timely patching and updates.

Immediate Steps to Take

Organizations should restrict access to authorized personnel only, monitor system changes, and investigate potential security breaches to prevent exploitation of the vulnerability.

Long-Term Security Practices

Implementing a robust security policy, conducting regular security audits, and providing security awareness training to employees can strengthen the overall security posture of organizations and mitigate the risks associated with such vulnerabilities.

Patching and Updates

It is crucial for organizations to stay informed about security updates and patches released by Dell to address the CVE-2023-28029 vulnerability. Promptly applying these patches can help eliminate the vulnerability and enhance system security.

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