Re: [Libguestfs] [guestfs-tools PATCH 2/2] sysprep: advise against cloning VMs with internal full disk encryption

On Thu, Jul 14, 2022 at 12:40:05PM +0200, Laszlo Ersek wrote: > This is relevant for sysprep because we recommend sysprep for facilitating > cloning. > > Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2106286 > Signed-off-by: Laszlo Ersek <lersek(a)redhat.com&gt; > --- > sysprep/virt-sysprep.pod | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/sysprep/virt-sysprep.pod b/sysprep/virt-sysprep.pod > index deeb5341e57c..232b9f24ba27 100644 > --- a/sysprep/virt-sysprep.pod > +++ b/sysprep/virt-sysprep.pod > @@ -519,6 +519,13 @@ Either or both options can be used multiple times on the command line. > > =head1 SECURITY > > +Virtual machines that employ full disk encryption I<internally to the > +guest> should not be considered for cloning and distribution, as it > +provides multiple parties with the same internal volume key, enabling > +any one such party to decrypt all the other clones. Refer to the L<LUKS > +FAQ|https://gitlab.com/cryptsetup/cryptsetup/-/blob/main/FAQ.md> for > +details. > + > Although virt-sysprep removes some sensitive information from the > guest, it does not pretend to remove all of it. You should examine > the L</OPERATIONS> above and the guest afterwards. > -- For the whole series: Reviewed-by: Richard W.M. Jones <rjones(a)redhat.com&gt;