![]() In opposite, it may be an additional attack vector especially in the case you create a shared folder with the default read AND write option. When sharing folders between the host and guest, you still have the option (at least with VirtualBox and VMWare Player that I use) to force the guest to access the shared folders in read only mode (you can copy data from the shared folder to your virtual machine but not in the opposite direction).Īs for your question's title, no, shared folders do not add any security layer regarding the possibility of infection of your host. To map a shared folder to a virtual machine, use these steps: After you complete the steps, the folder will mount as a drive on the virtual machine. As long as this has not been possible (AFAIK) it is not strange to read many cases on the Internet of hypervisors being escaped by malware ( IBM X-Force ® 2010 Mid-Year Trend and Risk Report). The only way to be sure a virtual machine won't infect its host is to develop an architecture that isolates the virtual machine from its hosts as if it separates them physically. A shared folder is implemented like pseudo-network redirector. Notice that it has both the pathname and the 'shortname'. Following that, choose the shared folder you want to remove and click on the remove button. ![]() Second, you can open the virtual machine setting > go to the Shared Folders, where it contains all the shared folders. Prerequisites: Host: Create a shared folder (using the UI or the vboxmanage command). First, you can remove the original shared folder you created on your host computer. ![]() The system drive (Windows C:) is especially helpful for file sharing. In reality, the virtual machine uses a special file system driver in the Guest Addition to talk to the host. OK, just experimented with Debian Wheezy guest on a Windows XP host (VirtualBox 4.3.8). From there you can select the devices youd like to share with the virtual machine. A virtual machine does not access directly the memory of the host in case of shared folders.
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