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Hardware assisted hypervisor introspection.

Jiangyong Shi1, Yuexiang Yang1, Chuan Tang2

  • 1College of Computing, NUDT, Deya Road, Changsha, 410072 China.

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Summary
This summary is machine-generated.

We developed hypervisor introspection to monitor hypervisor execution, enhancing cloud security. This method effectively detects hypercall-based attacks, even when the hypervisor is compromised, with minimal performance impact.

Keywords:
Hypercall interceptionHypervisor introspectionNested virtualizationSecurityVMI

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Area of Science:

  • Computer Science
  • Cybersecurity
  • Systems Security

Background:

  • Cloud security relies on hypervisors, which are vulnerable to compromise.
  • Existing virtual machine introspection tools may be deployed within vulnerable components.
  • Protecting hypervisors is crucial for overall cloud infrastructure integrity.

Purpose of the Study:

  • Introduce a novel hypervisor introspection technique for monitoring hypervisor execution.
  • Develop a method to protect hypervisors from compromise, enhancing cloud security.
  • Evaluate the effectiveness and performance of the proposed hypervisor introspection system.

Main Methods:

  • Utilize hardware support including nested virtualization, EPT protection, and breakpoint exceptions (#BP).
  • Monitor all hypercalls originating from virtual machines, including privileged ones.
  • Employ a hypercall injection method to simulate and test hypercall-based attacks.

Main Results:

  • The hypervisor introspection method effectively detects hypercall-based attacks.
  • The system demonstrates capability even when the hypervisor itself is compromised.
  • Performance evaluation indicates a manageable performance cost associated with the introspection.

Conclusions:

  • Hypervisor introspection offers a viable out-of-box solution for hypervisor security.
  • Future work will focus on reducing performance overhead and enhancing stealth.
  • The system has potential for application in various cloud security scenarios.