Описание
Envoy Admin Interface Exposed through prometheus metrics endpoint
Impact
A user with access to a Kubernetes cluster where Envoy Gateway is installed can use a path traversal attack to execute Envoy Admin interface commands on proxies managed by Envoy Gateway. The admin interface can be used to terminate the Envoy process and extract the Envoy configuration (possibly containing confidential data).
For example, the following command, if run from within the Kubernetes cluster, can be used to get the configuration dump of the proxy:
Patches
1.2.6
Workarounds
The EnvoyProxy API can be used to apply a bootstrap config patch that restricts access strictly to the prometheus stats endpoint. Find below an example of such a bootstrap patch.
References
- Envoy Admin Interface: https://www.envoyproxy.io/docs/envoy/latest/operations/admin
- Envoy Configuration Best Practices: https://www.envoyproxy.io/docs/envoy/latest/configuration/best_practices/edge
Ссылки
- https://github.com/envoyproxy/gateway/security/advisories/GHSA-j777-63hf-hx76
- https://nvd.nist.gov/vuln/detail/CVE-2025-24030
- https://github.com/envoyproxy/gateway/commit/3eb3301ab3dbf12b201b47bdb6074d1233be07bd
- https://www.envoyproxy.io/docs/envoy/latest/configuration/best_practices/edge
- https://www.envoyproxy.io/docs/envoy/latest/operations/admin
Пакеты
github.com/envoyproxy/gateway
< 1.2.6
1.2.6
Связанные уязвимости
Envoy Gateway is an open source project for managing Envoy Proxy as a standalone or Kubernetes-based application gateway. A user with access to the Kubernetes cluster can use a path traversal attack to execute Envoy Admin interface commands on proxies managed by any version of Envoy Gateway prior to 1.2.6. The admin interface can be used to terminate the Envoy process and extract the Envoy configuration (possibly containing confidential data). Version 1.2.6 fixes the issue. As a workaround, the `EnvoyProxy` API can be used to apply a bootstrap config patch that restricts access strictly to the prometheus stats endpoint. Find below an example of such a bootstrap patch.
Envoy Gateway is an open source project for managing Envoy Proxy as a standalone or Kubernetes-based application gateway. A user with access to the Kubernetes cluster can use a path traversal attack to execute Envoy Admin interface commands on proxies managed by any version of Envoy Gateway prior to 1.2.6. The admin interface can be used to terminate the Envoy process and extract the Envoy configuration (possibly containing confidential data). Version 1.2.6 fixes the issue. As a workaround, the `EnvoyProxy` API can be used to apply a bootstrap config patch that restricts access strictly to the prometheus stats endpoint. Find below an example of such a bootstrap patch.
