CVE-2023-45077 : Vulnerability Insights and Analysis

A memory leakage vulnerability in the 534D0740 DXE driver has been reported in Lenovo BIOS, potentially allowing a local attacker with elevated privileges to manipulate NVRAM variables.

Understanding CVE-2023-45077

This section will delve into the details of the CVE-2023-45077 vulnerability.

What is CVE-2023-45077?

CVE-2023-45077 is a memory leakage vulnerability in the 534D0740 DXE driver, impacting Lenovo BIOS. It enables a local attacker with elevated privileges to modify NVRAM variables.

The Impact of CVE-2023-45077

The vulnerability poses a medium severity risk, with high impacts on confidentiality, integrity, and availability of affected systems.

Technical Details of CVE-2023-45077

This section will provide technical insights into CVE-2023-45077.

Vulnerability Description

The vulnerability allows malicious actors with enhanced privileges to manipulate NVRAM variables, potentially leading to unauthorized system modifications.

Affected Systems and Versions

Lenovo BIOS versions across various products are affected by this vulnerability, making them susceptible to exploitation.

Exploitation Mechanism

The vulnerability can be exploited by local attackers with elevated privileges to write to NVRAM variables, potentially compromising system integrity.

Mitigation and Prevention

Here we will discuss the necessary steps to mitigate and prevent the exploitation of CVE-2023-45077.

Immediate Steps to Take

Users are advised to update their system firmware to the recommended version or newer as detailed on Lenovo's security advisory page.

Long-Term Security Practices

Implement regular system updates and security patches to safeguard against potential vulnerabilities and threats.

Patching and Updates

Stay informed about firmware updates and security advisories from Lenovo to address and prevent vulnerabilities like CVE-2023-45077.