CVE-2022-40080 : What You Need to Know

A stack overflow vulnerability in Aspire E5-475G's BIOS firmware has been identified, allowing local attackers to execute arbitrary code and gain escalated privileges.

Understanding CVE-2022-40080

This section provides an overview of the critical vulnerability present in the BIOS firmware of Aspire E5-475G.

What is CVE-2022-40080?

CVE-2022-40080 is a stack overflow vulnerability in the FpGui module of the Aspire E5-475G's BIOS firmware. It allows local attackers to execute arbitrary code in the UEFI DXE phase, enabling them to gain escalated privileges.

The Impact of CVE-2022-40080

The exploitation of this vulnerability can lead to unauthorized code execution by attackers, potentially resulting in complete system compromise and unauthorized access to sensitive information.

Technical Details of CVE-2022-40080

In this section, we delve into the technical specifics of CVE-2022-40080.

Vulnerability Description

The vulnerability arises due to a stack overflow issue in the FpGui module, triggered by a second call to GetVariable services within the BIOS firmware of Aspire E5-475G.

Affected Systems and Versions

At present, all versions of Aspire E5-475G's BIOS firmware are affected by CVE-2022-40080, leaving these systems vulnerable to exploitation.

Exploitation Mechanism

Local attackers can exploit this vulnerability by executing arbitrary code in the UEFI DXE phase after leveraging the stack overflow issue in the FpGui module of the targeted BIOS firmware.

Mitigation and Prevention

Here, we discuss the necessary steps to mitigate and prevent the exploitation of CVE-2022-40080.

Immediate Steps to Take

Disable any unnecessary services or functionalities that could potentially be leveraged by attackers to exploit the vulnerability.
Monitor for any suspicious activities within the BIOS firmware to detect potential exploitation attempts.

Long-Term Security Practices

Regularly update the BIOS firmware of Aspire E5-475G to receive patches addressing the identified vulnerability.
Implement strict access controls and authentication mechanisms to prevent unauthorized access to the system.

Patching and Updates

It is crucial to apply patches released by the vendor to address CVE-2022-40080. Stay informed about security updates and promptly apply them to secure your system.