virt-bootstrap 1.1.0 allows local users to discover a root password by listing a process, because this password may be present in the --root-password option to virt_bootstrap.py.
https://www.redhat.com/archives/virt-tools-list/2019-July/msg00043.html
https://github.com/virt-manager/virt-bootstrap/releases
http://www.openwall.com/lists/oss-security/2019/07/08/3
http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00026.html
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00080.html