Security warning: Virt-viewer leaks copy&pasted passwords to inactive instances

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  • Just discovered it. So when you have an untrusted vm in a virtviewer window and leave that window in the background, still all clipboard content is shared with it. Here's a ticket on the gitlab repo. Please upvote that, if you have a gitlab account and think this situation is not ideal too.

  • virt-manager

    Desktop tool for managing virtual machines via libvirt

  • Yeah, it's bad, see also. A workarround is to disable clipboard sharing with SPICE_MAX_CLIPBOARD=0 env. var. on the client, or in VM's config with args: -spice disable-copy-paste=on.

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