جزئیات آسیب‌پذیری

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.

• https://github.com/envoyproxy/gateway/security/advisories/GHSA-j777-63hf-hx76 x_refsource_CONFIRM
• https://github.com/envoyproxy/gateway/commit/3eb3301ab3dbf12b201b47bdb6074d1233be07bd x_refsource_MISC
• https://www.envoyproxy.io/docs/envoy/latest/configuration/best_practices/edge x_refsource_MISC
• https://www.envoyproxy.io/docs/envoy/latest/operations/admin x_refsource_MISC