CVE-2022-24420 : What You Need to Know

Dell BIOS contains a critical vulnerability due to improper input validation, allowing a local authenticated malicious user to execute arbitrary code during System Management Mode (SMM).

Understanding CVE-2022-24420

This CVE record highlights a security flaw in Dell BIOS that poses a high risk to the confidentiality, integrity, and availability of affected systems.

What is CVE-2022-24420?

The CVE-2022-24420 vulnerability in Dell BIOS stems from insufficient input validation, enabling a local authenticated attacker to leverage System Management Interrupts (SMI) for unauthorized code execution during SMM.

The Impact of CVE-2022-24420

With a CVSS base score of 8.2 (High), this vulnerability can have severe consequences, allowing attackers to potentially compromise system integrity, confidentiality, and availability, leading to arbitrary code execution.

Technical Details of CVE-2022-24420

By exploiting this vulnerability, attackers can execute malicious code in the SMM environment, circumventing security controls and gaining unauthorized access to critical system functions.

Vulnerability Description

The improper input validation vulnerability in Dell BIOS facilitates unauthorized code execution during System Management Mode, posing a significant security risk to affected systems.

Affected Systems and Versions

This vulnerability affects Dell systems running CPG BIOS versions less than 1.16.

Exploitation Mechanism

A local authenticated malicious user can exploit this vulnerability by utilizing System Management Interrupts (SMI) to execute arbitrary code during SMM.

Mitigation and Prevention

To mitigate the risks associated with CVE-2022-24420, immediate action is required to secure affected systems against potential attacks.

Immediate Steps to Take

Users should apply patches provided by Dell to address the vulnerability in affected BIOS versions. Additionally, limiting user privileges and monitoring system activity can help reduce the risk of exploitation.

Long-Term Security Practices

Implementing robust security measures, such as network segmentation, regular security updates, and security awareness training, can enhance overall system resilience and protect against similar vulnerabilities.

Patching and Updates

Regularly checking for BIOS updates and promptly applying patches from trusted sources like Dell can help ensure protection against known vulnerabilities and enhance system security.