[Openstack-security] [Bug 1456228] Re: Trusted vm can be powered on untrusted host
Wei Wang
wei.w.wang at gmail.com
Mon Sep 7 16:01:02 UTC 2015
I understand that it has been conclude that nova is not the place to
address this security issue from above discussions.. However documenting
will not make this issue goes away, while it actually probable give a
clue to people who really want to compromise a trusted host..
Can anyone shed some lights on, which component should perform such
check so a VM that are supposed on trusted host only can't not be
powered on on a compromised host, especially in this case attestation
server has already figured out the hose is no longer trusted?
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https://bugs.launchpad.net/bugs/1456228
Title:
Trusted vm can be powered on untrusted host
Status in OpenStack Compute (nova):
Invalid
Status in OpenStack Security Advisory:
Won't Fix
Status in OpenStack Security Notes:
Confirmed
Bug description:
This is related to the trusted compute.
I recently setup trusted compute pool in my company and have observed
that although new trusted vm is not able to be launched from an
untrusted host, but if an trusted vm that have launched earlier on a
trusted host which is compromised later on, that VM can still be
powered on.
1. Exact version of Nova/Openstack:
[root at grunt2 ~]# rpm -qa | grep nova
python-nova-2014.1.2-100+45c2cbc.fc20.noarch
openstack-nova-network-2014.1.2-100+45c2cbc.fc20.noarch
openstack-nova-compute-2014.1.2-100+45c2cbc.fc20.noarch
openstack-nova-conductor-2014.1.2-100+45c2cbc.fc20.noarch
openstack-nova-2014.1.2-100+45c2cbc.fc20.noarch
openstack-nova-cells-2014.1.2-100+45c2cbc.fc20.noarch
openstack-nova-api-2014.1.2-100+45c2cbc.fc20.noarch
openstack-nova-console-2014.1.2-100+45c2cbc.fc20.noarch
python-novaclient-2.17.0-2.fc21.noarch
openstack-nova-cert-2014.1.2-100+45c2cbc.fc20.noarch
openstack-nova-scheduler-2014.1.2-100+45c2cbc.fc20.noarch
openstack-nova-objectstore-2014.1.2-100+45c2cbc.fc20.noarch
openstack-nova-common-2014.1.2-100+45c2cbc.fc20.noarch
openstack-nova-novncproxy-2014.1.2-100+45c2cbc.fc20.noarch
openstack-nova-doc-2014.1.2-100+45c2cbc.fc20.noarch
2. Relevant log files:
this is not a error, don't think logs will help..
3. Reproduce steps:
* create trusted compute pool with only one compute node
* create an trusted VM on that compute node
* compromise the trusted compute node by changing the boot order
* power on the trusted Vm created earlier.
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