Описание
A flaw was found in Keycloak. An authenticated administrator with the manage-clients role can exploit a Time-of-check to time-of-use (TOCTOU) vulnerability in the name-based admin role checks. This allows the attacker to escalate their privileges to realm-admin for all users within the realm, granting them extensive control over the system. The composite role relationship persists even after the attacker's own permissions are revoked and across system reboots.
Отчет
A Moderate privilege escalation flaw exists in Keycloak where an authenticated administrator with manage-clients privileges can exploit a Time-of-Check to Time-of-Use (TOCTOU) vulnerability. This allows them to escalate their privileges to realm-admin for all users within the realm, impacting the integrity of role-based access control.
Меры по смягчению последствий
Mitigation for this issue is either not available or the currently available options do not 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-rhel9 | Will not fix | ||
| Red Hat build of Keycloak 26.6 | rhbk/keycloak-operator-bundle | Fixed | RHSA-2026:56524 | 18.08.2026 |
| Red Hat build of Keycloak 26.6 | rhbk/keycloak-rhel9 | Fixed | RHSA-2026:56524 | 18.08.2026 |
| Red Hat build of Keycloak 26.6 | rhbk/keycloak-rhel9-operator | Fixed | RHSA-2026:56524 | 18.08.2026 |
| Red Hat build of Keycloak 26.6.6 | rhbk-keycloak-rhel9/rhbk-keycloak-rhel9 | Fixed | RHSA-2026:56523 | 18.08.2026 |
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Дополнительная информация
Статус:
6.5 Medium
CVSS3
Связанные уязвимости
A flaw was found in Keycloak. An authenticated administrator with the `manage-clients` role can exploit a Time-of-check to time-of-use (TOCTOU) vulnerability in the name-based admin role checks. This allows the attacker to escalate their privileges to `realm-admin` for all users within the realm, granting them extensive control over the system. The composite role relationship persists even after the attacker's own permissions are revoked and across system reboots.
A flaw was found in Keycloak. An authenticated administrator with the ...
Keycloak has a Time-of-check Time-of-use (TOCTOU) Race Condition
ALT-PU-2026-11043: package `keycloak` update to version 26.7.0-alt1
ALT-PU-2026-10844: package `keycloak` update to version 26.7.0-alt1
6.5 Medium
CVSS3