CVE-2022-3743 : Security Advisory and Response

A potential vulnerability was discovered in LCFC BIOS for some Lenovo consumer notebook models that could allow a local attacker with elevated privileges under certain conditions the ability to enumerate Embedded Controller (EC) commands.

Understanding CVE-2022-3743

This CVE identifier refers to a vulnerability found in the LCFC BIOS of certain Lenovo consumer notebook models, granting local attackers with escalated privileges the ability to list Embedded Controller commands.

What is CVE-2022-3743?

CVE-2022-3743 highlights a security flaw in Lenovo's LCFC BIOS, enabling local attackers to retrieve Embedded Controller commands under specific conditions with elevated privileges.

The Impact of CVE-2022-3743

The vulnerability poses a medium severity risk with a base CVSSv3.1 score of 4.4, exposing sensitive information to unauthorized actors and affecting confidentiality.

Technical Details of CVE-2022-3743

This section presents detailed technical insights into the CVE.

Vulnerability Description

The vulnerability in LCFC BIOS allows local attackers to enumerate EC commands, potentially leading to unauthorized access to sensitive information.

Affected Systems and Versions

The impacted systems include various Lenovo consumer notebook models running the vulnerable LCFC BIOS.

Exploitation Mechanism

Attackers with elevated privileges can exploit the vulnerability to retrieve EC commands under specific conditions.

Mitigation and Prevention

Learn how to mitigate the risks associated with CVE-2022-3743.

Immediate Steps to Take

Update your system firmware to the recommended version mentioned in the Product Impact section on Lenovo's security advisory LEN-103710.

Long-Term Security Practices

Regularly monitor security updates from Lenovo and apply patches promptly to safeguard against potential vulnerabilities.

Patching and Updates

Stay informed about firmware updates and security advisories released by Lenovo to address vulnerabilities like CVE-2022-3743.