CVE-2022-35896 Explained : Impact and Mitigation
Learn about CVE-2022-35896 affecting Insyde InsydeH2O firmware versions 5.0 through 5.5. Find out the impact, technical details, and mitigation steps for this SMM memory leak vulnerability.
Insyde InsydeH2O with kernel versions 5.0 through 5.5 is affected by an SMM memory leak vulnerability in the SMM driver. This vulnerability allows an attacker to dump SMRAM contents and access sensitive information.
Understanding CVE-2022-35896
This CVE refers to a security vulnerability in Insyde InsydeH2O firmware that can be exploited to leak sensitive information through the SMM driver.
What is CVE-2022-35896?
The vulnerability in the SMM driver of Insyde InsydeH2O allows attackers to read the contents of SMRAM, leading to information disclosure.
The Impact of CVE-2022-35896
The impact of this vulnerability is the potential exposure of sensitive information stored in SMRAM, posing a risk of data leakage and confidentiality breaches.
Technical Details of CVE-2022-35896
This section discusses the technical aspects of the CVE, including the vulnerability description, affected systems, and exploitation mechanism.
Vulnerability Description
The SMM memory leak vulnerability in the SMM driver of Insyde InsydeH2O firmware permits unauthorized access to SMRAM contents, enabling attackers to extract sensitive data.
Affected Systems and Versions
Insyde InsydeH2O firmware versions 5.0 through 5.5 are confirmed to be impacted by this security flaw.
Exploitation Mechanism
Attackers can exploit this vulnerability by utilizing the software SMI provided by the FvbServicesRuntimeDxe driver to dump SMRAM contents and retrieve stored information.
Mitigation and Prevention
To safeguard systems from potential exploits related to CVE-2022-35896, immediate actions and long-term security measures are crucial.
Immediate Steps to Take
It is recommended to apply security patches or updates released by Insyde to mitigate the vulnerability. Additionally, monitoring system activities for unauthorized access attempts is advisable.
Long-Term Security Practices
Implementing robust access control policies, conducting regular security audits, and ensuring timely installation of firmware updates are essential for enhancing long-term security posture.
Patching and Updates
Stay informed about security advisories from Insyde and promptly apply recommended patches or updates to address known vulnerabilities.