Fast VM Replication on Heterogeneous Hypervisors for Robust Fault Tolerance
Jean-Baptiste Decourcelle, Tu Dinh Ngoc, Boris Teabe, Daniel Hagimont · 2023
The reliability of virtualization infrastructures in the face of availability issues is a long-standing problem. Current fault tolerance approaches such as live VM replication are effective at addressing external, accidental issues (e.g. hardware failures, power cuts, environmental disasters); however, against an active attacker exploiting zero-day denial-of-service (DoS) vulnerabilities in the hypervisor itself, these approaches do not address the root cause of said vulnerabilities, and therefore cannot protect against these issues. This is made more relevant by the prevalence of DoS vulnerabilities among many widely used hypervisors.