CVE-2022-34400 : What You Need to Know
Learn about CVE-2022-34400, a Dell BIOS heap buffer overflow vulnerability that allows local attackers to write to SMRAM during SMM. Understand the impact, affected systems, and mitigation steps.
A heap buffer overflow vulnerability in Dell BIOS could allow a local attacker with admin privileges to write to SMRAM during SMM.
Understanding CVE-2022-34400
This section delves into the details of the CVE-2022-34400 vulnerability.
What is CVE-2022-34400?
Dell BIOS is impacted by a heap buffer overflow vulnerability that could be exploited by a local attacker with admin privileges to write to SMRAM during SMM.
The Impact of CVE-2022-34400
The vulnerability poses a high severity risk, with a CVSS base score of 7.1, indicating a potential for arbitrary write to SMRAM during SMM.
Technical Details of CVE-2022-34400
Explore the technical aspects of the CVE-2022-34400 vulnerability below.
Vulnerability Description
The vulnerability lies in the heap buffer overflow within Dell BIOS, enabling unauthorized write access to SMRAM during SMM.
Affected Systems and Versions
Affected systems include Dell products with BIOS version 2.15.2 or lower, exposing them to exploitation by local attackers with admin privileges.
Exploitation Mechanism
A local attacker can exploit this vulnerability to execute arbitrary write operations to SMRAM during SMM due to the heap buffer overflow in Dell BIOS.
Mitigation and Prevention
Learn how to address and mitigate the CVE-2022-34400 vulnerability.
Immediate Steps to Take
Owners of affected Dell systems should take immediate actions to secure their devices against potential exploits.
Long-Term Security Practices
Implement robust security measures, such as regular security updates and monitoring, to safeguard systems from similar vulnerabilities.
Patching and Updates
Stay informed about security patches and updates from Dell to address the identified heap buffer overflow vulnerability in BIOS.