Security Advisory Moderate: openstack-keystone security update

Advisory: RHSA-2014:0368-1
Type: Security Advisory
Severity: Moderate
Issued on: 2014-04-03
Last updated on: 2014-04-03
Affected Products: Red Hat OpenStack 3.0
CVEs (cve.mitre.org): CVE-2013-6391
CVE-2014-2237

Details

Updated openstack-keystone packages that fix two security issues are now
available for Red Hat Enterprise Linux OpenStack Platform 3.0.

The Red Hat Security Response Team has rated this update as having Moderate
security impact. Common Vulnerability Scoring System (CVSS) base scores,
which give detailed severity ratings, are available for each vulnerability
from the CVE links in the References section.

The OpenStack Identity service (keystone) authenticates and authorizes
OpenStack users by keeping track of users and their permitted activities.
The Identity service supports multiple forms of authentication including
user name and password credentials, token-based systems, and
AWS-style logins.

It was found that the ec2token API in keystone, which is used to generate
EC2-style (Amazon Elastic Compute Cloud) credentials, could generate a
token not scoped to a particular trust when creating a token from a
received trust-scoped token. A remote attacker could use this flaw to
retrieve a token that elevated their privileges to all of the trustor's
roles. Note that only OpenStack Identity setups that have EC2-style
authentication enabled were affected. (CVE-2013-6391)

It was found that the the memcache token back end of OpenStack Identity did
not correctly invalidate a revoked trust token, allowing users with revoked
tokens to retain access to services they should no longer be able to
access. Note that only OpenStack Identity setups using the memcache back
end for tokens were affected. (CVE-2014-2237)

Red Hat would like to thank Jeremy Stanley of the OpenStack Project for
reporting CVE-2013-6391. Upstream acknowledges Steven Hardy of Red Hat as
the original reporter of CVE-2013-6391.

All openstack-keystone users are advised to upgrade to these updated
packages, which correct these issues.


Solution

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/site/articles/11258

Updated packages

Red Hat OpenStack 3.0

SRPMS:
openstack-keystone-2013.1.5-2.el6ost.src.rpm
File outdated by:  RHSA-2014:0994
    MD5: 561e5b36efa0ec8a9a5836f96fda4ed0
SHA-256: 72d3d7ff65bc9c38f314a4cbcffa264f87895fb7c66ecce074f0dd0790ae9863
 
x86_64:
openstack-keystone-2013.1.5-2.el6ost.noarch.rpm
File outdated by:  RHSA-2014:0994
    MD5: 6233dc937175a07676c4ff6068de5d24
SHA-256: 7963f3269cc132d230b4477edde61945723217da59d5e8bd8994a15c24115447
openstack-keystone-doc-2013.1.5-2.el6ost.noarch.rpm
File outdated by:  RHSA-2014:0994
    MD5: 097ce5762cc38b994249a44bc6e0872d
SHA-256: 0f41727acfd4491021f0b67ba5f370825c699f471d9f0f84896b48662ff8dd8e
python-keystone-2013.1.5-2.el6ost.noarch.rpm
File outdated by:  RHSA-2014:0994
    MD5: e2763add55c5cf70cde12fcb69469acf
SHA-256: 324aeaa2ec3d66368783326dfa0add49b4d0898777318a1664b38a244e9e1431
 
(The unlinked packages above are only available from the Red Hat Network)

Bugs fixed (see bugzilla for more information)

1039164 - CVE-2013-6391 OpenStack Keystone: trust circumvention through EC2-style tokens
1071434 - CVE-2014-2237 openstack-keystone: trustee token revocation does not work with memcache backend


References



These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from:
https://www.redhat.com/security/team/key/#package

The Red Hat security contact is secalert@redhat.com. More contact details at http://www.redhat.com/security/team/contact/