CVE-2023-2992 : Vulnerability Insights and Analysis

This CVE-2023-2992 was published by Lenovo on June 26, 2023, highlighting a denial of service vulnerability in the System Management Module (SMM) and Fan Power Controller (FPC) products. Attackers can exploit this vulnerability under specific conditions, causing an unauthenticated denial of service. However, rebooting the affected modules can restore access to the management web server.

Understanding CVE-2023-2992

This section provides insights into the nature of CVE-2023-2992, its impact, technical details, and mitigation strategies.

What is CVE-2023-2992?

CVE-2023-2992 refers to an unauthenticated denial of service vulnerability found in the SMM v1, SMM v2, and FPC management web server of Lenovo products. This vulnerability can be triggered under crafted conditions but can be resolved by rebooting the affected modules.

The Impact of CVE-2023-2992

The impact of CVE-2023-2992 is rated as high, with a CVSS base score of 7.5. It affects the availability of the systems but does not compromise confidentiality or integrity. The attack vector is through the network with low attack complexity and requires no special privileges from the user.

Technical Details of CVE-2023-2992

Delve into the vulnerability description, affected systems, and exploitation mechanism to understand the technical aspects of CVE-2023-2992.

Vulnerability Description

The vulnerability resides in the SMM v1, SMM v2, and FPC management web servers, allowing unauthenticated denial of service attacks. Crafted conditions can trigger this vulnerability, impacting the availability of the affected systems.

Affected Systems and Versions

The SMM v1, SMM v2, and FPC modules from Lenovo are impacted by CVE-2023-2992. Various versions of these modules are affected, emphasizing the importance of timely mitigation.

Exploitation Mechanism

Attackers can exploit CVE-2023-2992 by triggering the denial of service vulnerability in the SMM and FPC management web servers under specific conditions. This can disrupt the access to the management interface until the modules are rebooted.

Mitigation and Prevention

Understanding the steps to mitigate and prevent CVE-2023-2992 is crucial to secure Lenovo systems effectively.

Immediate Steps to Take

To address CVE-2023-2992, users should upgrade to the firmware version indicated for their model in the Lenovo Product Security advisory. Following recommended security practices and promptly applying updates is essential to reduce the risk associated with this vulnerability.

Long-Term Security Practices

In the long term, organizations should prioritize regular security assessments, firmware updates, and monitoring of Lenovo products to ensure vulnerabilities like CVE-2023-2992 are promptly addressed and mitigated.

Patching and Updates

Lenovo provides a solution to CVE-2023-2992 by recommending users upgrade to the specified firmware version, as outlined in their Product Security advisory. Implementing timely updates and patches is critical to maintaining the security of SMM and FPC modules against known vulnerabilities.