Denial-of-Service Attacks on Shared Cache in Multicore: Analysis and Prevention

03/04/2019
by   Michael G Bechtel, et al.
0

In this paper we investigate the feasibility of denial-of-service (DoS) attacks on shared caches in multicore platforms. With carefully engineered attacker tasks, we are able to cause more than 300X execution time increases on a victim task running on a dedicated core on a popular embedded multicore platform, regardless of whether we partition its shared cache or not. Based on careful experimentation on real and simulated multicore platforms, we identify an internal hardware structure of a non-blocking cache, namely the cache writeback buffer, as a potential target of shared cache DoS attacks. We propose an OS-level solution to prevent such DoS attacks by extending a state-of-the-art memory bandwidth regulation mechanism. We implement the proposed mechanism in Linux on a real multicore platform and show its effectiveness in protecting against cache DoS attacks.

READ FULL TEXT
research
05/21/2020

Memory-Aware Denial-of-Service Attacks on Shared Cache in Multicore Real-Time Systems

In this paper, we identify that memory performance plays a crucial role ...
research
04/23/2021

ClepsydraCache – Preventing Cache Attacks with Time-Based Evictions

Both the shift towards attacks on the microarchitectural CPU level and t...
research
12/19/2017

DeepPicar: A Low-cost Deep Neural Network-based Autonomous Car

We present DeepPicar, a low-cost deep neural network based autonomous ca...
research
03/22/2019

A WCET-aware cache colouring technique for reducing interference in real-time systems

The predictability of a system is the condition to give saferbound on wo...
research
02/23/2021

CBP: Coordinated management of cache partitioning, bandwidth partitioning and prefetch throttling

Reducing the average memory access time is crucial for improving the per...
research
12/14/2020

Cross Layer Attacks and How to Use Them (for DNS Cache Poisoning, Device Tracking and More)

We analyze the prandom pseudo random number generator (PRNG) in use in t...
research
06/03/2023

BandwidthBreach: Unleashing Covert and Side Channels through Cache Bandwidth Exploitation

In the modern CPU architecture, enhancements such as the Line Fill Buffe...

Please sign up or login with your details

Forgot password? Click here to reset