Browse Definitions :
Definition

virtual machine escape

Virtual machine escape is an exploit in which the attacker runs code on a VM that allows an operating system running within it to break out and interact directly with the hypervisor.

Such an exploit could give the attacker access to the host operating system and all other virtual machines (VMs) running on that host. Although there have been no incidents reported in the wild, VM escape is considered to be the most serious threat to virtual machine security.

Virtual machines are designed to run in self-contained, isolated environments in the host. Each VM should be, in effect, a separate system, isolated from the host operating system and any other VMs running on the same machine. The hypervisor is an intermediary between the host operating system and virtual machines. It controls the host processor and allocates resources as required to each guest operating system. 

Here's Ed Skoudis' explanation of the risk:

"If the attacker can compromise the virtual machines, they will likely have control of all of the guests, since the guests are merely subsets of the program itself. Also, most virtual machines run with very high privileges on the host because a virtual machine needs comprehensive access to the host's hardware so it can then map the real hardware into virtualized hardware for the guests. Thus, compromising the virtual machine means not only that the guests are goners, but the host is also likely lost."

To minimize vulnerability to VM escape, Skoudis recommends that you:

  • Keep virtual machine software patched.
  • Install only the resource-sharing features that you really need.
  • Keep software installations to a minimum because each program brings its own vulnerabilities.
This was last updated in April 2016

Continue Reading About virtual machine escape

SearchCompliance
  • compliance risk

    Compliance risk is an organization's potential exposure to legal penalties, financial forfeiture and material loss, resulting ...

  • information governance

    Information governance is a holistic approach to managing corporate information by implementing processes, roles, controls and ...

  • enterprise document management (EDM)

    Enterprise document management (EDM) is a strategy for overseeing an organization's paper and electronic documents so they can be...

SearchSecurity
  • session key

    A session key is an encryption and decryption key that is randomly generated to ensure the security of a communications session ...

  • computer forensics (cyber forensics)

    Computer forensics is the application of investigation and analysis techniques to gather and preserve evidence from a particular ...

  • multifactor authentication (MFA)

    Multifactor authentication (MFA) is a security technology that requires more than one method of authentication from independent ...

SearchHealthIT
SearchDisasterRecovery
  • risk mitigation

    Risk mitigation is a strategy to prepare for and lessen the effects of threats faced by a business.

  • call tree

    A call tree is a layered hierarchical communication model that is used to notify specific individuals of an event and coordinate ...

  • Disaster Recovery as a Service (DRaaS)

    Disaster recovery as a service (DRaaS) is the replication and hosting of physical or virtual servers by a third party to provide ...

SearchStorage
  • cloud storage

    Cloud storage is a service model in which data is transmitted and stored on remote storage systems, where it is maintained, ...

  • cloud testing

    Cloud testing is the process of using the cloud computing resources of a third-party service provider to test software ...

  • storage virtualization

    Storage virtualization is the pooling of physical storage from multiple storage devices into what appears to be a single storage ...

Close