CVE-2022-24421 Explained : Impact and Mitigation
Learn about CVE-2022-24421 affecting Dell BIOS. Explore impact, mitigation steps, affected systems, and exploitation details. Stay secure with timely updates.
Dell BIOS contains an improper input validation vulnerability that allows a local authenticated malicious user to exploit an SMI to execute arbitrary code during SMM.
Understanding CVE-2022-24421
This section provides insights into the impact and technical details of the CVE.
What is CVE-2022-24421?
The CVE-2022-24421 vulnerability in Dell BIOS arises due to improper input validation, enabling a local authenticated attacker to execute arbitrary code using SMI during SMM.
The Impact of CVE-2022-24421
With a CVSS base score of 8.2, this high-severity vulnerability can result in high confidentiality, integrity, and availability impacts. It requires high privileges for exploitation and can lead to arbitrary code execution.
Technical Details of CVE-2022-24421
Explore the specifics of the vulnerability, affected systems, and the exploitation mechanism.
Vulnerability Description
The vulnerability stems from improper input validation in Dell BIOS, providing an opening for local attackers to trigger arbitrary code execution via SMI in SMM.
Affected Systems and Versions
The vulnerability affects Dell's CPG BIOS version unspecified with a version less than 1.16, with a custom version type.
Exploitation Mechanism
A local authenticated malicious user can leverage the SMI to exploit the improper input validation vulnerability in Dell BIOS, gaining arbitrary code execution during SMM.
Mitigation and Prevention
Discover the necessary steps to mitigate and prevent the CVE-2022-24421 vulnerability.
Immediate Steps to Take
Users are advised to apply security updates provided by Dell promptly to address the vulnerability. Implementing least privilege access can also mitigate potential risks.
Long-Term Security Practices
Maintain regular security monitoring and awareness to detect and respond to similar vulnerabilities promptly. Consider security training for users to enhance overall security posture.
Patching and Updates
Stay informed about security advisories from Dell and promptly apply BIOS updates to secure affected systems against known vulnerabilities.