CVE-2022-34393 : Security Advisory and Response
Learn about CVE-2022-34393, a high-severity vulnerability in Dell BIOS that allows arbitrary code execution by local authenticated attackers. Find mitigation strategies and affected versions.
A local authenticated malicious user may exploit an improper input validation vulnerability in Dell BIOS to execute arbitrary code in SMRAM. Learn about the impact, technical details, and mitigation strategies for this CVE.
Understanding CVE-2022-34393
This section dives into the details of the CVE-2022-34393 vulnerability affecting Dell BIOS.
What is CVE-2022-34393?
Dell BIOS is susceptible to an improper input validation flaw, allowing a local authenticated attacker to execute arbitrary code in SMRAM.
The Impact of CVE-2022-34393
The vulnerability poses a high risk, with a CVSS base severity score of 7.5. Attackers can achieve arbitrary code execution, impacting confidentiality, integrity, and availability.
Technical Details of CVE-2022-34393
Explore the technical aspects of the CVE-2022-34393 vulnerability in Dell BIOS.
Vulnerability Description
The flaw arises from improper input validation, enabling attackers to trigger arbitrary code execution using an SMI in SMRAM.
Affected Systems and Versions
Dell BIOS versions up to and including 2.17.0 are vulnerable to this exploit.
Exploitation Mechanism
A local authenticated malicious user can leverage the SMI to exploit the vulnerability and gain arbitrary code execution in SMRAM.
Mitigation and Prevention
Understand the steps to mitigate the risks associated with CVE-2022-34393 in Dell BIOS.
Immediate Steps to Take
Users should apply security updates promptly to address the vulnerability and enhance system security.
Long-Term Security Practices
Regularly monitor vendor advisories and security bulletins for updates and patches to safeguard against potential exploits.
Patching and Updates
Ensure that BIOS updates provided by Dell are regularly installed to protect systems from known vulnerabilities.