CVE-2022-34376 Explained : Impact and Mitigation
Get insights into CVE-2022-34376 affecting Dell PowerEdge and Dell Precision BIOS. Learn about the impact, technical details, affected systems, and mitigation steps.
A detailed overview of CVE-2022-34376 highlighting the vulnerability in Dell PowerEdge and Dell Precision BIOS.
Understanding CVE-2022-34376
This section sheds light on the impact and technical aspects of the vulnerability.
What is CVE-2022-34376?
Dell PowerEdge BIOS and Dell Precision BIOS are affected by an improper input validation vulnerability. This flaw could be exploited by a local authenticated malicious user through SMI manipulation to cause a denial of service during SMM.
The Impact of CVE-2022-34376
The vulnerability has a CVSS v3.1 base score of 3.9 (Low severity) with high attack complexity. The attack vector is local, and the privileges required are high. While the confidentiality impact is none, the integrity impact is low, and availability impact is low.
Technical Details of CVE-2022-34376
Explore the vulnerability description, affected systems, and the exploitation mechanism in detail.
Vulnerability Description
The improper input validation vulnerability in Dell PowerEdge BIOS and Dell Precision BIOS allows a local authenticated malicious user to exploit it through SMI manipulation, leading to a denial of service during SMM.
Affected Systems and Versions
The Dell PowerEdge Platform versions 14G and 15G are impacted by this vulnerability.
Exploitation Mechanism
By manipulating the System Management Interrupt (SMI), a local authenticated malicious user can trigger a denial of service in System Management Mode (SMM).
Mitigation and Prevention
Discover the immediate steps to take and the long-term security practices to enhance cybersecurity.
Immediate Steps to Take
It is recommended to apply the patches provided by Dell promptly to mitigate the vulnerability. Additionally, monitoring SMI interactions can help detect and prevent unauthorized manipulations.
Long-Term Security Practices
Implementing regular security updates, conducting security awareness training, and enforcing the principle of least privilege can enhance the overall security posture.
Patching and Updates
Stay informed about security updates from Dell and ensure timely installation to protect the BIOS from potential exploits.