TY  - JOUR
T1  - Protection on WebAssembly JIT-Compiled Code with Randomized Memory Protection Key
AU  - Won, Shin Chae 
AU  - Seo, Jeong Yun 
AU  - Jin, Bae Myeong 
AU  - Hyun, Kwon Dong 
JO  - The Transactions of the Korea Information Processing Society
PY  - 2024
DA  - 2024/2/28
DO  - https://doi.org/10.3745/TKIPS.2024.13.11.597
KW  - JIT Compiler
KW  - Wasm
KW  - Intel MPK
KW  - Memory Protection
AB  - WebAssembly(Wasm) is a powerful platform that enables compiled code in various programming languages to be executed in web 
browser and in varied runtime environments. Specifically, for performance optimization, Wasm runtime provides Just-in-Time (JIT) 
compilation, but this poses a new security threat that violates the W^X policy in terms of memory security. In this study, we proposed 
a technique to improve the memory protection of JIT compiled code using Intel MPK and applied it to Wasm Micro Runtime (WAMR) 
to conduct experiments. We designed a code space protection algorithm that safely manages code space through diversification and 
randomization of protection keys and memory access control. As a result of benchmarking with CoreMark and PolyBench, the WAMR 
with memory protection showed performance improvement of about 1.59% in CoreMark and performance improvement of about 12% 
in PolyBench compared to the WAMR without memory protection.