keystone vulnerability

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

* Ubuntu 19.10

Summary

OpenStack Keystone could be made to expose sensitive information
over the network.

Software Description

* keystone - OpenStack identity service

Details

Daniel Preussker discovered that OpenStack Keystone incorrectly
handled the list credentials API. A user with a role on the
project could use this issue to view any other user's credentials.

Update instructions

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

Ubuntu 19.10
keystone - 2:16.0.0-0ubuntu1.1
python3-keystone - 2:16.0.0-0ubuntu1.1

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

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

References

* CVE-2019-19687

--- Mystic BBS v1.12 A43 (Linux/64)
* Origin: BZ&BZ BBS (21:4/110)