Hypervisor Secure Launch Verification Beyond UEFI Trust
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Solution Overview
Problem
Existing hypervisor launch processes are insecure, relying heavily on Unified Extensible Firmware Interface (UEFI) code, which can be compromised, compromising the integrity of virtual machines and the host system.
Innovation Solution
A secure launch process for hypervisors that involves authenticating and executing hypervisor loaders before non-secure code, using hardware-based root of trust, and verifying security credentials to ensure the hypervisor is launched securely, with platform details being obtained and stored in memory.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If UEFI code is used for hypervisor launch, then ease of operation is improved, but security reliability deteriorates
Solution Approach 1:
A secure launch verification mechanism is introduced as an intermediary between the UEFI code and the hypervisor launch process. This intermediary validates security credentials and measures during initialization, ensuring that even if UEFI code is compromised, the hypervisor will not execute unless security requirements are met. The verification process acts as a mediator that blocks malicious execution while allowing legitimate hypervisor launches.
2Reliability
If security verification is performed during hypervisor initialization, then security reliability is improved, but device complexity increases
Solution Approach 1:
Security verification actions are performed preliminarily during the hypervisor initialization phase, before the hypervisor fully loads or executes. The system checks for security credentials, validates measurements, and verifies trustworthiness early in the boot process. This preliminary security validation prevents the need for complex runtime security checks, as the security state is established before the hypervisor becomes operational.
3Reliability
If secure launch process is implemented, then security reliability is improved, but loss of time increases
Solution Approach 1:
The secure launch verification process is designed to rapidly validate security credentials and measurements during initialization by skipping unnecessary verification steps for trusted components. The system performs targeted security checks only on critical security-relevant code and data, rather than进行全面 verification of all system components. This selective verification approach reduces the time overhead while maintaining security reliability.
Data Source
AI summary
This disclosure generally relates to securely launching a hypervisor and subsequently validating that the hypervisor was securely launched. As is described herein, once a hypervisor has been initialized or has otherwise launched, a verification operation is performed. The verification operation may be used to ensure that the hypervisor was securely launched. When it is determined that the hypervisor was securely launched, one or more platform details are obtained. These platform details may then be stored in a memory device.