Subverting Linux On-the-Fly Using Hardware Virtualization Technology

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Executive Summary

In this paper, the authors address the problem faced by modern operating systems due to the exploitation of Hardware-Assisted Full-Virtualization technology by attackers. Virtualization technology has been of growing importance these days. With the help of such a technology, multiple operating systems can be run on a single piece of hardware, with little or no modification to the operating system. Both Intel and AMD have contributed to x86 full-virtualization through their respective instruction set architectures. Hardware virtualization extensions can be found in almost all x86 processors these days. Hardware virtualization technologies have opened a whole new frontier for a new kind of attack.

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