A Fuzzy Escape: From Fuzzing to VM Breakouts

In the blog post “A Fuzzy Escape: A tale of vulnerability research on hypervisors,” Google Bug Hunters recount the intensive—and often messy—journey of uncovering a virtual machine escape flaw. The narrative walks through the iterative process of designing and refining fuzzing techniques, supplemented by static analysis, to probe hypervisor behavior. The researchers detail how initial fuzzing revealed unexpected behaviors, how they adjusted fuzz targets and instrumentation accordingly, and how a combination of persistence, tooling innovation, and deep dives into debugging eventually uncovered a serious vulnerability that could allow code execution outside a guest VM’s isolation boundary.  

https://bughunters.google.com/blog/5800341475819520/a-fuzzy-escape-a-tale-of-vulnerability-research-on-hypervisors

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