CVE-2023-39283 : Security Advisory and Response
Learn about CVE-2023-39283, a memory corruption flaw in Insyde InsydeH2O allowing attackers to manipulate SMM, potentially leading to privilege escalation. Find mitigation steps here.
A memory corruption vulnerability in the SMM driver of InsydeH2O allows attackers to send arbitrary data to SMM, potentially leading to privilege escalation.
Understanding CVE-2023-39283
This CVE involves an SMM memory corruption vulnerability in the SMM driver (SMRAM write) in Insyde InsydeH2O with kernel versions 5.0 through 5.5.
What is CVE-2023-39283?
CVE-2023-39283 refers to a security vulnerability in Insyde InsydeH2O that enables attackers to manipulate SMM memory, posing a risk of privilege escalation.
The Impact of CVE-2023-39283
The vulnerability allows malicious actors to inject arbitrary data into the System Management Mode (SMM), potentially leading to privilege escalation on affected systems.
Technical Details of CVE-2023-39283
This section delves into the specifics of the vulnerability, including affected systems, exploitation mechanisms, and potential risks.
Vulnerability Description
The vulnerability originates in the SMM driver (SMRAM write) in Insyde InsydeH2O with kernel versions 5.0 through 5.5, permitting unauthorized data manipulation in the System Management Mode.
Affected Systems and Versions
All systems running Insyde InsydeH2O with kernel versions 5.0 through 5.5 are susceptible to this memory corruption vulnerability.
Exploitation Mechanism
Attackers can exploit this vulnerability by sending malicious data to the SMM, thereby gaining unauthorized access and potentially escalating privileges.
Mitigation and Prevention
Discover the immediate steps and long-term security practices to mitigate the risks posed by CVE-2023-39283.
Immediate Steps to Take
System administrators should monitor for security updates, apply patches promptly, and implement protective measures to safeguard against potential exploits.
Long-Term Security Practices
Implement strict access controls, conduct regular security audits, and stay informed about emerging threats to maintain a secure system environment.
Patching and Updates
Stay vigilant for security advisories from Insyde and apply recommended patches and updates to address the vulnerability effectively.