CVE-2023-27593
Gravedad CVSS v3.1:
MEDIA
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
17/03/2023
Última modificación:
07/11/2023
Descripción
*** Pendiente de traducción *** Cilium is a networking, observability, and security solution with an eBPF-based dataplane. Prior to versions 1.11.15, 1.12.8, and 1.13.1, an attacker with access to a Cilium agent pod can write to `/opt/cni/bin` due to a `hostPath` mount of that directory in the agent pod. By replacing the CNI binary with their own malicious binary and waiting for the creation of a new pod on the node, the attacker can gain access to the underlying node.<br />
<br />
The issue has been fixed and the fix is available on versions 1.11.15, 1.12.8, and 1.13.1. Some workarounds are available. Kubernetes RBAC should be used to deny users and service accounts `exec` access to Cilium agent pods. In cases where a user requires `exec` access to Cilium agent pods, but should not have access to the underlying node, no workaround is possible.
Impacto
Puntuación base 3.x
5.50
Gravedad 3.x
MEDIA
Productos y versiones vulnerables
| CPE | Desde | Hasta |
|---|---|---|
| cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:* | 1.11.15 (excluyendo) | |
| cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:* | 1.12.0 (incluyendo) | 1.12.8 (excluyendo) |
| cpe:2.3:a:cilium:cilium:*:*:*:*:*:*:*:* | 1.13.0 (incluyendo) | 1.13.1 (excluyendo) |
Para consultar la lista completa de nombres de CPE con productos y versiones, ver esta página
Referencias a soluciones, herramientas e información
- https://github.com/cilium/cilium/pull/24075
- https://github.com/cilium/cilium/releases/tag/v1.11.15
- https://github.com/cilium/cilium/releases/tag/v1.12.8
- https://github.com/cilium/cilium/releases/tag/v1.13.1
- https://github.com/cilium/cilium/security/advisories/GHSA-4hc4-pgfx-3mrx
- https://kubernetes.io/docs/reference/access-authn-authz/rbac/