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Ubuntu Security Notice USN-3448-1
October 11, 2017

keystone vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 16.04 LTS

Summary:

OpenStack Keystone would allow unintended access over the network.

Software Description:
- keystone: OpenStack identity service

Details:

Boris Bobrov discovered that OpenStack Keystone incorrectly handled
federation mapping when there are rules in which group-based assignments
are not used. A remote authenticated user may receive all the roles
assigned to a project regardless of the federation mapping, contrary to
expectations.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 16.04 LTS:
  keystone                        2:9.3.0-0ubuntu3.1
  python-keystone                 2:9.3.0-0ubuntu3.1

In general, a standard system update will make all the necessary changes.

References:
  https://www.ubuntu.com/usn/usn-3448-1
  CVE-2017-2673

Package Information:
  https://launchpad.net/ubuntu/+source/keystone/2:9.3.0-0ubuntu3.1