CVE-2022-32492 : Vulnerability Insights and Analysis
Learn about CVE-2022-32492, a Dell BIOS vulnerability allowing local attackers to execute arbitrary code through SMI. Discover impact, mitigation, and patch details.
Dell BIOS contains an improper input validation vulnerability that allows a local authenticated malicious user to execute arbitrary code in SMRAM using an SMI. This CVE was published on September 22, 2022, with a CVSS base score of 7.5.
Understanding CVE-2022-32492
This section provides insight into the nature of the vulnerability and its impact.
What is CVE-2022-32492?
CVE-2022-32492 is a security vulnerability found in Dell's CPG BIOS, where a local authenticated attacker could exploit improper input validation to execute arbitrary code in SMRAM through SMI.
The Impact of CVE-2022-32492
The vulnerability poses a high risk as an attacker with local access can achieve arbitrary code execution, potentially leading to confidentiality, integrity, and availability compromise of the affected system.
Technical Details of CVE-2022-32492
Detailed information on the vulnerability and its technical aspects.
Vulnerability Description
The vulnerability arises from improper input validation in Dell's CPG BIOS, enabling an authenticated user to trigger arbitrary code execution within SMRAM through System Management Interrupts (SMI).
Affected Systems and Versions
Dell CPG BIOS versions prior to 2.21.0 are impacted by this vulnerability, with the specific version listed as 'unspecified'.
Exploitation Mechanism
An authenticated local user can leverage an SMI to exploit the improper input validation flaw, allowing them to execute arbitrary code within the SMRAM area.
Mitigation and Prevention
Guidelines to prevent and mitigate the risks associated with CVE-2022-32492.
Immediate Steps to Take
Users are advised to apply security patches promptly, restrict unauthorized access to system configurations, monitor BIOS integrity, and implement secure boot mechanisms.
Long-Term Security Practices
Regularly update BIOS versions, enforce strong authentication mechanisms, conduct security training for users, and maintain system logs for anomaly detection.
Patching and Updates
Dell has released BIOS version 2.21.0 or later to address this vulnerability. Users should update their BIOS to the patched version to mitigate the risk of exploitation.