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MassanuttenComputerFlag for United States of America asked on

Virtual Machine Security

I'm running a VM which connects to a wireless network completely separate from my office LAN. (i.e., I've disabled the wired NIC on the VM and the connection is not bridged... I use a USB WiFi adapter which provides the VM with an internet connection. The question of security came up today - if my VM were to become infected, could it also infect my host? (From what I've read this is a rather debatable question, so I'm excited about what discussions may arise.)
VirtualizationVulnerabilitiesOS Security

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MassanuttenComputer

8/22/2022 - Mon
arzka

As long as they share no drives or network interfaces, it shouldn't be possible for the host system to be infected. If you make backups you are able to access on the host system and actually do so, you obviously risk infecting the host system too, but that's not really within the scope of this question.

I assume you configured the VM itself not to have a network interface instead of just disabling it from the VM operating system. If not, and if we assume the possibilities are endless, you might be infected with a virus that'd re-enable the network interface, sniffed the traffic enough to configure it properly and proceed to infecting your system.

..and if that was an issue to you, you would've made sure there's no way for that to happen - or would probably have set the system up in a completely isolated machine in the first place.

One possible issue is of course another machine at your location connecting to the said WLAN by accident(?), being infected and then spreading the virus when reconnected to the proper network. Not very probable assuming you bothered to protect the WLAN and made sure nobody else has access to it at your location.  
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Tolomir

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MassanuttenComputer

Thanks for the research info - excellent article and exactly what I was looking for.
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