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Ubuntu: OpenStack Keystone Critical Access Issue USN-7857-1

ubuntu
Calendar Grey November 4, 2025
Dist Ubuntu Esm H88
OpenStack Keystone vulnerability allows unauthorized access to network services. Update required for Ubuntu systems.
OpenStack Keystone could allow unintended access to network services.

Summary

OpenStack Keystone could allow unintended access to network services.

Software Description:

- keystone: OpenStack identity service

Details:

Kay discovered that OpenStack Keystone incorrectly handled the ec2tokens

and s3tokens APIs. A remote attacker could possibly use this issue to

obtain unauthorized access and escalate privileges.

Topics%20covered

Topics Covered

security advisory critical access issue Ubuntu openstack Keystone

Update Instructions

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

Ubuntu 25.10
  keystone                        2:28.0.0-0ubuntu1.1
  python3-keystone                2:28.0.0-0ubuntu1.1

Ubuntu 25.04
  keystone                        2:27.0.0-0ubuntu1.1
  python3-keystone                2:27.0.0-0ubuntu1.1

Ubuntu 24.04 LTS
  keystone                        2:25.0.0-0ubuntu1.1
  python3-keystone                2:25.0.0-0ubuntu1.1

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

References

https://ubuntu.com/security/notices/USN-7857-1

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7857-1

Topics%20covered

Topics Covered

security advisory critical access issue Ubuntu openstack Keystone

Package Information

https://launchpad.net/ubuntu/+source/keystone/2:28.0.0-0ubuntu1.1

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