CVE-2021-0155 : What You Need to Know

This article provides detailed information about CVE-2021-0155, a vulnerability affecting some Intel(R) Processors that could potentially lead to information disclosure. Read on to understand the impact, technical details, and mitigation steps related to this CVE.

Understanding CVE-2021-0155

This section delves into the specifics of the CVE-2021-0155 vulnerability.

What is CVE-2021-0155?

CVE-2021-0155 involves an unchecked return value in the BIOS firmware for certain Intel(R) Processors, which could permit a privileged user to exploit local access and potentially enable information disclosure.

The Impact of CVE-2021-0155

The vulnerability poses a risk of exposing sensitive information due to unchecked return values in the affected BIOS firmware for Intel(R) Processors.

Technical Details of CVE-2021-0155

This section outlines the technical aspects of CVE-2021-0155.

Vulnerability Description

The vulnerability arises from unchecked return values in the BIOS firmware for particular Intel(R) Processors, creating a pathway for potential information disclosure via local access.

Affected Systems and Versions

The vulnerability impacts Intel(R) Processors, and affected versions can be found in the provided references.

Exploitation Mechanism

A privileged user can exploit this vulnerability through local access and potentially obtain sensitive information.

Mitigation and Prevention

Below are the steps to mitigate and prevent exploitation of CVE-2021-0155.

Immediate Steps to Take

It is crucial to follow immediate security measures to protect systems against potential exploitation of this vulnerability.

Long-Term Security Practices

Implementing robust security practices for BIOS firmware and system access can help safeguard against information disclosure risks.

Patching and Updates

Regularly updating BIOS firmware and system patches, as well as staying informed about security advisories, can help mitigate the risks associated with CVE-2021-0155.