CVE-2022-26858 : Security Advisory and Response
Learn about CVE-2022-26858, a significant Dell BIOS vulnerability allowing local authenticated attackers to bypass security controls. Understand the impact, affected systems, and mitigation steps.
Dell BIOS versions contain a significant security vulnerability that allows locally authenticated malicious users to bypass security controls through an Improper Authentication flaw in the SMI mechanism.
Understanding CVE-2022-26858
This section will delve into the details of the CVE-2022-26858 vulnerability affecting Dell BIOS versions.
What is CVE-2022-26858?
CVE-2022-26858 refers to an Improper Authentication vulnerability present in Dell BIOS versions. This vulnerability enables a locally authenticated attacker to exploit the SMI mechanism.
The Impact of CVE-2022-26858
The existence of this vulnerability poses a medium-level threat, with a CVSS base score of 6.1. It can lead to a high impact on confidentiality and a low impact on integrity.
Technical Details of CVE-2022-26858
In this section, we will explore the technical aspects of CVE-2022-26858.
Vulnerability Description
The flaw in Dell BIOS versions allows a locally authenticated user to launch attacks by injecting malicious input through the SMI in order to circumvent security measures.
Affected Systems and Versions
All versions of Dell CPG BIOS are affected by this vulnerability, leaving a wide range of systems at risk of exploitation.
Exploitation Mechanism
The vulnerability can be exploited by a high-privileged user with local access, leveraging the SMI interface to execute unauthorized actions.
Mitigation and Prevention
To safeguard systems from the CVE-2022-26858 vulnerability, immediate actions and long-term security practices are crucial.
Immediate Steps to Take
Users should apply relevant security patches provided by Dell and closely monitor system access to detect any suspicious activities.
Long-Term Security Practices
Implementing strict access controls, regular security updates, and security training for users can enhance the overall protection of systems.
Patching and Updates
Regularly checking for BIOS updates and applying them promptly is vital to mitigate the risk associated with CVE-2022-26858.