RT-Sniper: A Low-Overhead Defense Mechanism Pinpointing Cache Side-Channel Attacks
Since cache side-channel attacks have been serious security threats to multi-tenant systems, there have been several studies to protect systems against the attacks. However, the prior studies have limitations in determining only the existence of the attack and/or occupying too many computing resourc...
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| Autores principales: | , , , |
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| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
MDPI AG
2021
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/dff2245456c54f99a22288648a9d4940 |
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| Sumario: | Since cache side-channel attacks have been serious security threats to multi-tenant systems, there have been several studies to protect systems against the attacks. However, the prior studies have limitations in determining only the existence of the attack and/or occupying too many computing resources in runtime. We propose a low-overhead pinpointing solution, called RT-Sniper, to overcome such limitations. RT-Sniper employs a two-level filtering mechanism to minimize performance overhead. It first monitors hardware events per core and isolates a suspected core to run a malicious process. Then among the processes running on the selected core, RT-Sniper pinpoints a malicious process through a per-process monitoring approach. With the core-level filtering, RT-Sniper has an advantage in overhead compared to the previous works. We evaluate RT-Sniper against Flush+Reload and Prime+Probe attacks running SPEC2017, LMBench, and PARSEC benchmarks on multi-core systems. Our evaluation demonstrates that the performance overhead by RT-Sniper is negligible (0.3% for single-threaded applications and 2.05% for multi-threaded applications). Compared to the previous defense solutions against cache side-channel attacks, RT-Sniper exhibits better detection performance with lower performance overhead. |
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