Seungkyun Han (Chungnam National University), Jinsoo Jang (Chungnam National University)

We propose a solution, MyTEE, that enables a trusted execution environment (TEE) to be built even in worst-case environments wherein major hardware security primitives (e.g., ARM TrustZone extensions for memory access control) are absent. Crafting page tables for memory isolation, filtering DMA packets, and enabling secure IO exist at the core of MyTEE. Particularly for secure IO, we shield the IO buffers and memory-mapped registers of the controllers and securely escalate the privilege of the partial code block of the device drivers to provide permission to access the protected objects. By doing so, the need to host the device driver in the TEE (in whole or in part), which can potentially introduce a new attack surface, is exempted. The proof-of-concept (PoC) of MyTEE is implemented on the Raspberry Pi 3 board, which does not support most of the important security primitives for building the TEE. Additionally, three secure IO examples with the hardware TPM, framebuffer, and USB keyboard are demonstrated to show the feasibility of our approach.

View More Papers

WIP: The Feasibility of High-performance Message Authentication in Automotive...

Evan Allen (Virginia Tech), Zeb Bowden (Virginia Tech Transportation Institute), Randy Marchany (Virginia Tech), J. Scot Ransbottom (Virginia Tech)

Read More

Access Your Tesla without Your Awareness: Compromising Keyless Entry...

Xinyi Xie (Shanghai Fudan Microelectronics Group Co., Ltd.), Kun Jiang (Shanghai Fudan Microelectronics Group Co., Ltd.), Rui Dai (Shanghai Fudan Microelectronics Group Co., Ltd.), Jun Lu (Shanghai Fudan Microelectronics Group Co., Ltd.), Lihui Wang (Shanghai Fudan Microelectronics Group Co., Ltd.), Qing Li (State Key Laboratory of ASIC & System, Fudan University), Jun Yu (State Key…

Read More

Location Spoofing Attacks on Autonomous Fleets

Jinghan Yang, Andew Estornell, Yevgeniy Vorobeychik (Washington University in St. Louis)

Read More

MetaWave: Attacking mmWave Sensing with Meta-material-enhanced Tags

Xingyu Chen (University of Colorado Denver), Zhengxiong Li (University of Colorado Denver), Baicheng Chen (University of California San Diego), Yi Zhu (SUNY at Buffalo), Chris Xiaoxuan Lu (University of Edinburgh), Zhengyu Peng (Aptiv), Feng Lin (Zhejiang University), Wenyao Xu (SUNY Buffalo), Kui Ren (Zhejiang University), Chunming Qiao (SUNY at Buffalo)

Read More