========================================================================== Ubuntu Security Notice USN-7926-1 December 11, 2025
keystone vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 22.04 LTS Summary: Several security issues were fixed in OpenStack Keystone. 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. (CVE-2025-65073) It was discovered that OpenStack Keystone only validated the first 72 bytes of an application secret. An attacker could possibly use this issue to bypass password complexity. (CVE-2021-3563) It was discovered that OpenStack Keystone had a time lag before a token should be revoked by the security policy. A remote administrator could use this issue to maintain access for longer than expected. (CVE-2022-2447) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 22.04 LTS keystone 2:21.0.1-0ubuntu2.1 python3-keystone 2:21.0.1-0ubuntu2.1 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-7926-1 CVE-2021-3563, CVE-2022-2447, CVE-2025-65073 Package Information: https://launchpad.net/ubuntu/+source/keystone/2:21.0.1-0ubuntu2.1
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