CVE-2022-26859 : Exploit Details and Defense Strategies

Dell BIOS contains a race condition vulnerability that could be exploited by a local attacker to bypass security checks during SMM via SMI.

Understanding CVE-2022-26859

This CVE involves a race condition vulnerability in Dell BIOS that poses a risk to system security.

What is CVE-2022-26859?

The CVE-2022-26859 vulnerability in Dell BIOS allows a local attacker to manipulate SMI inputs to evade security verifications during System Management Mode (SMM).

The Impact of CVE-2022-26859

The impact of this vulnerability is rated as medium with a CVSS base score of 6.1. It has a high integrity impact and low confidentiality impact.

Technical Details of CVE-2022-26859

This section delves into the specific technical aspects of the CVE.

Vulnerability Description

The vulnerability involves a race condition in Dell BIOS that could be leveraged by a local attacker to send malicious input via SMI to circumvent security checks during SMM.

Affected Systems and Versions

The Dell CPG BIOS of all versions are affected by this vulnerability.

Exploitation Mechanism

An attacker with high privileges can exploit this vulnerability locally by manipulating the SMI inputs during SMM.

Mitigation and Prevention

Understanding the mitigation strategies and preventive measures against CVE-2022-26859.

Immediate Steps to Take

Users should apply patches and updates released by Dell to address the race condition vulnerability in the BIOS. Additionally, monitoring system behavior for any suspicious activities is recommended.

Long-Term Security Practices

Implementing a comprehensive security policy, regular security audits, and ensuring timely application of security patches can enhance the overall security posture of the system.

Patching and Updates

Regularly check for BIOS updates and security advisories from Dell to stay protected from potential vulnerabilities.