Bug 1489360 (CVE-2017-12155)

Summary:	CVE-2017-12155 openstack-tripleo-heat-templates: Ceph client keyring is world-readable when deployed by director
Product:	[Other] Security Response	Reporter:	Adam Mariš <amaris>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	apevec, athomas, chrisw, dbecker, emacchi, gfidente, gmollett, jefbrown, jjoyce, johfulto, jomurphy, jschluet, kbasil, kschinck, lhh, lpeer, markmc, mburns, morazi, rbryant, rhel-osp-director-maint, rhos-maint, sclewis, seb, security-response-team, slinaber, slong, sparks, tbarron, tdecacqu, tsedovic, tvignaud, ykawada
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	puppet-tripleo-7.4.7, puppet-tripleo-6.5.7	Doc Type:	If docs needed, set a value
Doc Text:	A resource-permission flaw was found in the openstack-tripleo-heat-templates package where ceph.client.openstack.keyring is created as world-readable. A local attacker with access to the key could read or modify data on Ceph cluster pools for OpenStack as though the attacker were the OpenStack service, thus potentially reading or modifying data in an OpenStack Block Storage volume. To exploit this flaw, the attacker must have local access to an overcloud node. However by default, access to overcloud nodes is restricted and accessible only from the management undercloud server on an internal network. Follow good security principles in your networking environment to ensure that network access is properly controlled.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-08 03:24:49 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1491467, 1491468, 1491469, 1491470, 1491471, 1491472, 1491473, 1493311, 1518029, 1518030
Bug Blocks:	1489366

Description Adam Mariš 2017-09-07 09:25:29 UTC

When deploying overcloud by Director, it was found that ceph client keyring is created as world-readable potentially allowing local attackers to read or modify data of guests.

Product bug:

https://bugzilla.redhat.com/show_bug.cgi?id=1462657

Comment 6 Summer Long 2017-09-14 06:24:33 UTC

Acknowledgments:

Name: Katuya Kawakami (NEC)

Comment 8 Summer Long 2017-09-19 06:11:23 UTC

Mitigation:

To mitigate the flaw, use an overcloud post-deploy script[1] to do the following on all overcloud nodes:

key=/etc/ceph/ceph.client.openstack.keyring
chown root:root $key
chmod 600 $key
setfacl -m u:glance:r $key 
setfacl -m u:cinder:r $key
setfacl -m u:nova:r $key
setfacl -m u: gnocchi:r $key

If not using Red Hat OpenStack Platform director, then run the commands above manually on each overcloud node, 
Warning: Only running 'chmod 600 $key' alone (without an ACL) will prevent OpenStack from reading the key.

[1] https://access.redhat.com/documentation/en-us/red_hat_openstack_platform/11/html-single/advanced_overcloud_customization/#sect-Customizing_Overcloud_PostConfiguration_All

Comment 9 Summer Long 2017-09-19 22:11:54 UTC

Created openstack-tripleo-heat-templates tracking bugs for this issue:

Affects: openstack-rdo [bug 1493311]

Comment 12 Summer Long 2017-11-27 23:27:00 UTC

Upstream: https://bugs.launchpad.net/tripleo/+bug/1720787
puppet-tripleo 
  https://review.openstack.org/519531
tripleo-heat-templates
  https://review.openstack.org/508975
  https://review.openstack.org/522024

Comment 14 Eric Christensen 2018-02-19 16:44:27 UTC

In reply to comment 13:
I reformatted the security part of the erratum to meet the new criteria.  Thanks for the heads up.

Comment 21 Summer Long 2018-02-21 22:07:11 UTC

Thanks Jason. Will do, and will pass on to the team. Thanks!

Comment 25 errata-xmlrpc 2018-03-28 17:14:27 UTC

This issue has been addressed in the following products:

  Red Hat OpenStack Platform 12.0 (Pike)

Via RHSA-2018:0602 https://access.redhat.com/errata/RHSA-2018:0602

Comment 26 errata-xmlrpc 2018-05-17 15:40:31 UTC

This issue has been addressed in the following products:

  Red Hat OpenStack Platform 10.0 (Newton)

Via RHSA-2018:1593 https://access.redhat.com/errata/RHSA-2018:1593

Comment 27 errata-xmlrpc 2018-05-18 17:02:51 UTC

This issue has been addressed in the following products:

  Red Hat OpenStack Platform 11.0 (Ocata)

Via RHSA-2018:1627 https://access.redhat.com/errata/RHSA-2018:1627