=========================================================================Ubuntu Security Notice USN-6073-8
May 23, 2023

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

- Ubuntu 23.04
- Ubuntu 22.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

Summary:

USN-6073-3 introduced a regression in Nova.

Software Description:
- nova: OpenStack Compute cloud infrastructure

Details:

USN-6073-3 fixed a vulnerability in Nova. Unfortunately the update
introduced a regression with detaching volumes. The security fix has been
removed pending further investigation.

We apologize for the inconvenience.

Original advisory details:

  Jan Wasilewski and Gorka Eguileor discovered that Nova incorrectly
  handled deleted volume attachments. An authenticated user or attacker could
  possibly use this issue to gain access to sensitive information.
   This update may require configuration changes to be completely effective,
  please see the upstream advisory for more information:
   https://security.openstack.org/ossa/OSSA-2023-003.html

Update instructions:

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

Ubuntu 23.04:
   python3-nova                    3:27.0.0-0ubuntu1.2

Ubuntu 22.10:
   python3-nova                    3:26.1.0-0ubuntu2.2

Ubuntu 22.04 LTS:
   python3-nova                    3:25.1.0-0ubuntu2.2

Ubuntu 20.04 LTS:
   python3-nova                    2:21.2.4-0ubuntu2.5

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

References:
   https://ubuntu.com/security/notices/USN-6073-8
   https://ubuntu.com/security/notices/USN-6073-1
   https://launchpad.net/bugs/2020111

Package Information:
   https://launchpad.net/ubuntu/+source/nova/3:27.0.0-0ubuntu1.2
   https://launchpad.net/ubuntu/+source/nova/3:26.1.0-0ubuntu2.2
   https://launchpad.net/ubuntu/+source/nova/3:25.1.0-0ubuntu2.2
   https://launchpad.net/ubuntu/+source/nova/2:21.2.4-0ubuntu2.5