CVE-2023-22614 : Exploit Details and Defense Strategies

This CVE record highlights an issue discovered in ChipsetSvcSmm in Insyde InsydeH2O with kernel versions 5.0 through 5.5. The vulnerability stems from insufficient input validation in BIOS Guard updates, potentially leading to memory corruption in System Management Mode (SMM) by manipulating inputs to the BIOS Guard System Management Interrupt (SMI) handler.

Understanding CVE-2023-22614

This section delves deeper into the nature of the CVE-2023-22614 vulnerability and its impact on affected systems.

What is CVE-2023-22614?

CVE-2023-22614 is a vulnerability found in the ChipsetSvcSmm component of Insyde InsydeH2O firmware with kernel versions ranging from 5.0 to 5.5. It specifically involves inadequate input validation in BIOS Guard updates, enabling potential memory corruption in SMM when malformed inputs are supplied to the BIOS Guard SMI handler.

The Impact of CVE-2023-22614

The impact of CVE-2023-22614 can be severe as it allows an attacker to exploit the vulnerability to induce memory corruption in SMM, potentially leading to unauthorized access, privilege escalation, or system compromise.

Technical Details of CVE-2023-22614

In this section, we will explore the vulnerability description, affected systems and versions, as well as the exploitation mechanism of CVE-2023-22614.

Vulnerability Description

The vulnerability in ChipsetSvcSmm in Insyde InsydeH2O firmware arises from the lack of proper input validation in BIOS Guard updates, creating an avenue for attackers to manipulate input data and cause memory corruption in System Management Mode.

Affected Systems and Versions

The issue impacts systems utilizing Insyde InsydeH2O firmware with kernel versions between 5.0 and 5.5. As of the latest information available, specific vendor, product, and versions affected by the vulnerability are not disclosed.

Exploitation Mechanism

Exploiting CVE-2023-22614 involves supplying malformed inputs to the BIOS Guard System Management Interrupt (SMI) handler, potentially triggering memory corruption in System Management Mode and allowing attackers to execute malicious actions.

Mitigation and Prevention

Understanding how to mitigate and prevent CVE-2023-22614 is crucial for ensuring the security of vulnerable systems.

Immediate Steps to Take

Immediate steps to mitigate the vulnerability may include monitoring for security updates from Insyde or relevant vendors, implementing security best practices, and restricting unauthorized access to critical system components.

Long-Term Security Practices

In the long term, organizations should prioritize regular security assessments, conducting thorough penetration testing, and ensuring timely firmware updates to address known vulnerabilities that could be exploited by attackers.

Patching and Updates

It is essential for affected users to apply relevant security patches and updates provided by Insyde or respective vendors to remediate the vulnerability and strengthen the overall security posture of the system.