Security in hardware assisted virtualization for cloud computing-State of the art issues and challenges

摘要

The advantages of virtualization technology have resulted in its wide spread adoption in cloud computing infrastructures. However it has also introduced a new set of security threats that are serious in nature. Many of these threats are unique in virtualized environments and not pertinent in the traditional computing scenarios. Hence these threats have been less studied and thus less addressed by most of the security application vendors. For this reason, it becomes important to carefully analyze the various threats arising at different components of virtualization and thus effectively create solutions to defend the systems against them. This survey attempts to highlight the significant vulnerabilities and expose the readers to the various existing attacks related to Hardware assisted virtualization, as it has become the most widely used form of virtualization in building modern day massive data centers and cloud infrastructures. A Bayesian attack graph model is presented for evaluating the risks associated with the identified threats. A detailed discussion of various countermeasures proposed against the identified threats is presented along with the enumeration of challenges in adopting them. (C) 2019 Elsevier B.V. All rights reserved.