CVE-2022-34391 Explained : Impact and Mitigation

Dell Client BIOS Versions prior to the remediated version contain an improper input validation vulnerability that could allow a local authenticated malicious user to gain arbitrary code execution in SMRAM using an SMI.

Understanding CVE-2022-34391

This article delves into the details of CVE-2022-34391, highlighting the impact, technical details, and mitigation strategies.

What is CVE-2022-34391?

The CVE-2022-34391 vulnerability exists in Dell Client BIOS Versions prior to version 1.2.15, allowing local authenticated attackers to execute arbitrary code using an SMI.

The Impact of CVE-2022-34391

The vulnerability poses a high risk, with a CVSS base score of 7.5 (High). Attackers could exploit this flaw to achieve arbitrary code execution in SMRAM.

Technical Details of CVE-2022-34391

Get insights into the vulnerability description, affected systems, and the exploitation mechanism.

Vulnerability Description

The vulnerability results from improper input validation in Dell Client BIOS, enabling attackers to trigger arbitrary code execution by utilizing an SMI.

Affected Systems and Versions

The issue affects Dell Client BIOS versions prior to 1.2.15, with a status of 'affected' for version type 'custom'.

Exploitation Mechanism

A local authenticated malicious user can exploit the vulnerability by leveraging an SMI to execute arbitrary code in SMRAM.

Mitigation and Prevention

Learn about the immediate steps and long-term security practices to safeguard your systems.

Immediate Steps to Take

Users are advised to update their Dell Client BIOS to version 1.2.15 to mitigate the vulnerability and enhance system security.

Long-Term Security Practices

Implementing strict access controls and monitoring system activity can help prevent unauthorized users from exploiting similar vulnerabilities in the future.

Patching and Updates

Regularly check for security patches and updates from Dell to stay protected against emerging threats.