USN-7857-1: OpenStack Keystone vulnerability

Publication date

4 November 2025

Overview

OpenStack Keystone could allow unintended access to network services.


Packages

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.

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.

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
25.10 questing keystone –  2:28.0.0-0ubuntu1.1
python3-keystone –  2:28.0.0-0ubuntu1.1
25.04 plucky keystone –  2:27.0.0-0ubuntu1.1
python3-keystone –  2:27.0.0-0ubuntu1.1
24.04 LTS noble keystone –  2:25.0.0-0ubuntu1.1
python3-keystone –  2:25.0.0-0ubuntu1.1

Reduce your security exposure

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Have additional questions?

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