Description (CNA)
Traefik is an HTTP reverse proxy and load balancer. Prior to 2.11.46, 3.6.17, and 3.7.1, Traefik's Kubernetes Gateway API provider allows a tenant with HTTPRoute creation permissions to expose the REST provider handler, bypassing the providers.rest.insecure=false setting. The Gateway provider accepts any TraefikService backend reference whose name ends with @internal, making it possible to route traffic to rest@internal in addition to the intended api@internal. In shared Gateway deployments where the REST provider is enabled, this allows a low-privileged actor to gain live dynamic configuration write access to Traefik, enabling unauthorized reconfiguration of routers and services. This vulnerability is fixed in 2.11.46, 3.6.17, and 3.7.1.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| traefik / traefik | affected < 2.11.46; affected >= 3.0.0-beta1, < 3.6.17; affected >= 3.7.0-rc.0, < 3.7.1 |
CWE
CWE-284
References
- https://github.com/traefik/traefik/security/advisories/GHSA-96qj-4jj5-wcjc
- https://github.com/traefik/traefik/releases/tag/v2.11.46
- https://github.com/traefik/traefik/releases/tag/v3.6.17
- https://github.com/traefik/traefik/releases/tag/v3.7.1
ADP enrichment
No English description supplied.
No references supplied.
A flaw was found in Traefik. A low-privileged tenant with HTTPRoute creation permissions in Traefik's Kubernetes Gateway API provider can bypass security settings. This allows the tenant to expose the REST provider handler and gain live dynamic configuration write access to Traefik. This vulnerability enables unauthorized reconfiguration of routers and services, potentially leading to privilege escalation within the system.