Описание
Only self-managed Grafana instances with Auth Proxy authentication and identity caching enabled (sync_ttl greater than zero) are affected. The Auth Proxy cache key concatenated the username and forwarded identity attributes without a delimiter, so distinct identities could collide on one key. An authenticated user who shapes their own attributes to collide with a higher-privileged user's, while that user's cache entry is live, is authenticated as that user, up to Administrator (authentication bypass by spoofing).
On instances using Auth Proxy header authentication ([auth.proxy]) with identity caching enabled (sync_ttl > 0), two distinct user identities could produce the same cache key. An authenticated low-privileged user able to influence their own forwarded identity attributes could be served a higher-privileged user's cached session and act as that user for the duration of the cache TTL. Default configurations are not affected.
Меры по смягчению последствий
Set [auth.proxy] sync_ttl = 0 to disable the identity cache (identity is then synced on every request), or upgrade to a fixed version: 11.0.0+, 12.4.10+ (12.4.x), 13.0.8+ (13.0.x), 13.1.5+ (13.1.x), or 13.2.1+ (13.2.x and newer — 13.2.0 itself is still vulnerable).
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Multicluster Global Hub | multicluster-globalhub/multicluster-globalhub-grafana-rhel9 | Affected | ||
| Red Hat Advanced Cluster Management for Kubernetes 2 | rhacm2/acm-grafana-rhel9 | Affected | ||
| Red Hat Ceph Storage 5 | rhceph/rhceph-5-dashboard-rhel8 | Under investigation | ||
| Red Hat Ceph Storage 6 | rhceph/rhceph-6-dashboard-rhel9 | Affected | ||
| Red Hat Ceph Storage 7 | rhceph/grafana-rhel9 | Affected | ||
| Red Hat Ceph Storage 8 | rhceph/grafana-rhel9 | Affected | ||
| Red Hat Ceph Storage 9 | rhceph/grafana-rhel10 | Affected | ||
| Red Hat Enterprise Linux 10 | grafana | Not affected | ||
| Red Hat Enterprise Linux 8 | grafana | Not affected | ||
| Red Hat Enterprise Linux 9 | grafana | Not affected |
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Дополнительная информация
Статус:
EPSS
7.1 High
CVSS3
Связанные уязвимости
Only self-managed Grafana instances with Auth Proxy authentication and identity caching enabled (sync_ttl greater than zero) are affected. The Auth Proxy cache key concatenated the username and forwarded identity attributes without a delimiter, so distinct identities could collide on one key. An authenticated user who shapes their own attributes to collide with a higher-privileged user's, while that user's cache entry is live, is authenticated as that user, up to Administrator (authentication bypass by spoofing).
Only self-managed Grafana instances with Auth Proxy authentication and identity caching enabled (sync_ttl greater than zero) are affected. The Auth Proxy cache key concatenated the username and forwarded identity attributes without a delimiter, so distinct identities could collide on one key. An authenticated user who shapes their own attributes to collide with a higher-privileged user's, while that user's cache entry is live, is authenticated as that user, up to Administrator (authentication bypass by spoofing).
EPSS
7.1 High
CVSS3