Title

Efficient Virtualization-based Application Protection against Untrusted Operating System

Publication Type

Conference Proceeding Article

Publication Date

4-2015

Abstract

Commodity monolithic operating systems are abundant with vulnerabilities that lead to rootkit attacks. Once an operating system is subverted, the data and execution of user applications are fully exposed to the adversary, regardless whether they are designed and implemented with security considerations. Existing application protection schemes have various drawbacks, such as high performance overhead, large Trusted Computing Base (TCB), or hardware modification. In this paper, we present the design and implementation of AppShield, a hypervisor-based approach that reliably safeguards code, data and execution integrity of a critical application, in a more efficient way than existing systems. The protection overhead is localized to the protected application only, so that unprotected applications and the operating system run without any performance loss. In addition to the performance advantage, AppShield tackles several newly identified threats in this paper which are not systematically addressed previously. We build a prototype of AppShield with a tiny hypervisor, and experiment with AppShield by running several off-the-shelf applications on a Linux platform. The results testify to AppShield's low performance costs in terms of CPU computation, disk I/O and network I/O.

Keywords

application protection, isolated execution environment, address space isolation, untrusted OS

Discipline

Computer Sciences | Information Security

Publication

AsiaCCS'15: Proceedings of the 10th ACM Symposium on Information, Computer and Communications Security: April 14-17, 2015, Singapore

First Page

345

Last Page

356

ISBN

9781450332453

Identifier

10.1145/2714576.2714618

Publisher

ACM

City or Country

New York

Additional URL

http://dx.doi.org/10.1145/2714576.2714618

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