Описание
A flaw was identified in the Docker v2 authentication endpoint of Keycloak, where tokens continue to be issued even after a Docker registry client has been administratively disabled. This means that turning the client “Enabled” setting to OFF does not fully prevent access. As a result, previously valid credentials can still be used to obtain authentication tokens. This weakens administrative controls and could allow unintended access to container registry resources.
Отчет
The security impact of this vulnerability is rated as Low because successful exploitation requires valid user credentials and knowledge of the Docker client ID. While the issue does not allow privilege escalation beyond the authenticated user’s permissions, it undermines an important administrative control. By continuing to issue tokens for a disabled client, the system fails to properly enforce authorization state, potentially resulting in unintended access to protected container images.
Меры по смягчению последствий
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Build of Keycloak | rhbk/keycloak-operator-bundle | Fix deferred | ||
| Red Hat Build of Keycloak | rhbk/keycloak-rhel9-operator | Fix deferred | ||
| Red Hat JBoss Enterprise Application Platform 8 | keycloak-services | Fix deferred | ||
| Red Hat JBoss Enterprise Application Platform Expansion Pack | keycloak-services | Fix deferred | ||
| Red Hat Single Sign-On 7 | keycloak-services | Fix deferred | ||
| Red Hat build of Keycloak 26.4 | rhbk/keycloak-operator-bundle | Fixed | RHSA-2026:3948 | 05.03.2026 |
| Red Hat build of Keycloak 26.4 | rhbk/keycloak-rhel9 | Fixed | RHSA-2026:3948 | 05.03.2026 |
| Red Hat build of Keycloak 26.4 | rhbk/keycloak-rhel9-operator | Fixed | RHSA-2026:3948 | 05.03.2026 |
| Red Hat build of Keycloak 26.4.10 | rhbk/keycloak-rhel9 | Fixed | RHSA-2026:3947 | 05.03.2026 |
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Дополнительная информация
Статус:
EPSS
3.8 Low
CVSS3
Связанные уязвимости
A flaw was identified in the Docker v2 authentication endpoint of Keycloak, where tokens continue to be issued even after a Docker registry client has been administratively disabled. This means that turning the client “Enabled” setting to OFF does not fully prevent access. As a result, previously valid credentials can still be used to obtain authentication tokens. This weakens administrative controls and could allow unintended access to container registry resources.
A flaw was identified in the Docker v2 authentication endpoint of Keyc ...
Keycloak: Missing Check on Disabled Client for Docker Registry Protocol
EPSS
3.8 Low
CVSS3