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LWRM: A lightweight response mechanism for TCG TOCTOU attack

Authors Chang, X.
Xing, B.
Liu, J.
Muppala, J.K. View this author's profile
Issue Date 2009
Source 2009 IEEE 28th International Performance Computing and Communications Conference, IPCCC 2009 , 2009, p. 200-207
Summary The current TCG architecture suffers from the Time-of-Check-To-Time-of-Use (TOCTOU) attacks in commodity PC operating systems (OS), in which kernel rootkits can get unrestricted access to OS resources. VMM-based approaches running at a privilege level higher than that of virtual machine (VM) kernel can effectively detect dynamic or static data attacks occurring in VMs. This paper proposes a lightweight response mechanism (LWRM) for TCG TOCTOU attacks occurring in VMs. LWRM has the following features: (1) compared to the existing response mechanism, LWRM is more effective in defeating the TCG TOCTOU attacks; (2) LWRM imposes less overhead on the system during normal execution; (3) LWRM is transparent to the kernel rootkits; and (4) LWRM can work in the scenarios with more than one run-time trusted virtual machine. We describe the design idea and the implementation by using the Xen virtual machine monitor (VMM) and the virtual TPM facility shipped with the Xen. © 2009 IEEE.
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Language English
Format Conference paper
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