arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2007.05876cs.CR
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基于IoT设备的TrustZone-M可移植软件安全性研究

On Runtime Software Security of TrustZone-M based IoT Devices

Lan Luo, Yue Zhang, Cliff C. Zou, Xinhui Shao, Zhen Ling, Xinwen Fu

摘要:

物联网(IoT)设备已经越来越多地融入我们的日常生活。然而,这样的智能设备遭受广泛的攻击面。特别是,如果物联网设备使用资源受限的微控制器(MCU),则在运行时针对设备软件的攻击具有挑战性。TrustZone-M是MCU的TrustZone扩展,是一种新兴的安全技术,可增强基于MCU的物联网设备。本文首次对启用TrustZone-M的MCU中的潜在软件安全问题进行了安全分析。我们探讨了基于堆栈的缓冲区溢出(BOF)攻击的代码注入,面向返回的编程(ROP)攻击,基于堆的BOF攻击,格式字符串攻击,和攻击非安全可调用(NSC)的上下文中的TrustZone-M的功能。我们使用启用TrustZone-M的SAM L11 MCU验证这些攻击。还讨论了减轻这些软件攻击的策略。

英文摘要:

Internet of Things (IoT) devices have been increasingly integrated into our daily life. However, such smart devices suffer a broad attack surface. Particularly, attacks targeting the device software at runtime are challenging to defend against if IoT devices use resource-constrained microcontrollers (MCUs). TrustZone-M, a TrustZone extension for MCUs, is an emerging security technique fortifying MCU based IoT devices. This paper presents the first security analysis of potential software security issues in TrustZone-M enabled MCUs. We explore the stack-based buffer overflow (BOF) attack for code injection, return-oriented programming (ROP) attack, heap-based BOF attack, format string attack, and attacks against Non-secure Callable (NSC) functions in the context of TrustZone-M. We validate these attacks using the TrustZone-M enabled SAM L11 MCU. Strategies to mitigate these software attacks are also discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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