openstack/security-doc
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Add OSSN-0063

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Add OSSN-0063 which discuss a bug in the Barbican key manager that
is part of Nova and Cinder.  This bug has been patched to affected
versions that are still supported.

Closes-Bug: #1523646
Change-Id: I649c0d817d96d0dc89367d69c73483b45d8e626f
This commit is contained in:
Dave McCowan
2016-01-14 14:18:22 -06:00
committed by Darren Chan
parent c86f87bf88
commit f7df1f4041
1 changed files with 53 additions and 0 deletions
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Nova and Cinder key manager for Barbican misuses cached credentials
---
### Summary ###
During the Icehouse release the Cinder and Nova projects added a
feature that supports storage volume encryption using keys stored in
Barbican. The Barbican key manager, that is part of Nova and
Cinder, had a bug that could cause an authorized user to lose access to an
encryption key or allow the wrong user to gain access to an encryption key.
### Affected Services / Software ###
Cinder: Icehouse, Juno, Kilo, Liberty
Nova: Juno, Kilo, Liberty
### Discussion ###
The Barbican key manager is a feature that is part of Nova and Cinder to
allow those projects to create and retrieve keys in Barbican. The key
manager includes a cache function that allows for a copy_key() operation
to work while only validating the token once with Keystone.
This cache function had a bug such that the cached token was used for
operations where it was no longer valid. The symptoms of this error vary, but
include a user not being able to access their key or the wrong user being
able to access a key.
An affected user would see an error similar to this in their cinder log.
---- begin cinder.log sample snippet ----
2015-12-03 09:09:03.648 TRACE cinder.volume.api Unauthorized: The request you
have made requires authentication. (Disable debug mode to suppress these
details.) (HTTP 401) (Request-ID: req-d2c52e0b-c16d-43ec-a7a0-7611113f1270)
---- end cinder.log sample snippet ----
### Recommended Actions ###
Users wishing to use the Barbican key manager to provided keys for volume
encryption with Nova and Cinder should ensure they are using a patched
version.
A specification for a fix has been merged for the Mitaka
release of both Nova and Cinder. Additionally these patches have been
backported to stable/kilo and stable/liberty.
### Contacts / References ###
This OSSN : https://wiki.openstack.org/wiki/OSSN/OSSN-0063
Original LaunchPad Bug : https://bugs.launchpad.net/glance/+bug/1523646
OpenStack Security ML : openstack-security@lists.openstack.org
OpenStack Security Group : https://launchpad.net/~openstack-ossg
Nova patch for Mitaka : https://review.openstack.org/254358/
Nova patch for stable/liberty: https://review.openstack.org/288490
Cinder patch for Mitaka : https://review.openstack.org/254357/
Cinder patch for stable/liberty: https://review.openstack.org/266678
Cinder patch for stable/kilo: https://review.openstack.org/266680
CVE : N/A