DriverGuard: a fine-grained protection on I/O flows

  • Authors:
  • Yueqiang Cheng;Xuhua Ding;Robert H. Deng

  • Affiliations:
  • School of Information Systems, Singapore Management University;School of Information Systems, Singapore Management University;School of Information Systems, Singapore Management University

  • Venue:
  • ESORICS'11 Proceedings of the 16th European conference on Research in computer security
  • Year:
  • 2011

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Abstract

Most commodity peripheral devices and their drivers are geared to achieve high performance with security functions being opted out. The absence of security measures invites attacks on the I/O data and consequently threats those applications feeding on them, such as biometric authentication. In this paper, we present the design and implementation of DriverGuard, a hypervisor based protection mechanism which dynamically shields I/O flows such that I/O data are not exposed to the malicious kernel. Our design leverages a composite of cryptographic and virtualization techniques to achieve fine-grained protection. DriverGuard is lightweight as it only needs to protect around 2% of the driver code's execution. We have tested DriverGuard with three input devices and two output devices. The experiments show that DriverGuard induces negligible overhead to the applications.