We introduce Flip Feng Shui (FFS), a new exploitation vector which allows an attacker to induce bit flips overarbitrary physical memory in a fully controlled way. FFS relies on hardware bugs to induce bit flips over memoryand on the ability to surgically control the physical memory layout to corrupt attacker-targeted data anywhere inthe software stack. We show FFS is possible today with very few constraints on the target data, by implementingan instance using the Rowhammer bug and memory deduplication (an OS feature widely deployed in production).Memory deduplication allows an attacker to reverse-map any physical page into a virtual page she owns as long as the page’s contents are known. Rowhammer, in turn, allows an attacker to flip bits in controlled (initially unknown) locations in the target page. -(PDF) Usenix via Schneier on Security
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Back in 2010, when the term “cloud computing” was still laden with peril and mystery for many users in enterprise and high performance computing, HPC cloud startup, Nimbix, stepped out to tackle that perceived risk for some of the most challenging, latency-sensitive applications.
At the time, there were only a handful of small companies catering to the needs of high performance computing applications and those that existed were developing clever middleware to hook into AWS infrastructure. There were a few companies offering true “HPC as a service” (distinct datacenters designed to fit such workloads that could be accessed via a …
Specialized Supercomputing Cloud Turns Eye to Machine Learning was written by Nicole Hemsoth at The Next Platform.