Security News > 2020 > May > New Noise-Resilient Attack On Intel and AMD CPUs Makes Flush-based Attacks Effective

Modern Intel and AMD processors are susceptible to a new form of side-channel attack that makes flush-based cache attacks resilient to system noise, newly published research shared with The Hacker News has revealed.

It also works seamlessly against non-Linux Operating Systems, like macOS. "Like any other cache attacks, flush based cache attacks rely on the calibration of cache latency," Biswabandan Panda, assistant professor at IIT Kanpur, told The Hacker News.

"With DABANGG, we make a case for cache attacks that can succeed in the real world that's resilient to system noise and work perfectly even in a highly noisy environment," he added.

"We make these thresholds dynamic as a function of processor frequency which in turn make the flush based attacks resilient to system noise," Prof. Panda said.

"Generally speaking, if an attack cannot effectively target a victim's access unless all the conditions are controlled, that attack doesn't pose a real-world risk. We believe this is just the beginning in terms of pushing the cache attacks into the real world, and it will trigger better and more robust cache attacks in the future."

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