Description
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.
References (4)
Core 4
Core References
Mitigation, Third Party Advisory x_refsource_confirm
https://github.com/envoyproxy/gateway/security/advisories/GHSA-j777-63hf-hx76
Patch x_refsource_misc
https://github.com/envoyproxy/gateway/commit/3eb3301ab3dbf12b201b47bdb6074d1233be07bd
Product x_refsource_misc
https://www.envoyproxy.io/docs/envoy/latest/configuration/best_practices/edge
Product x_refsource_misc
https://www.envoyproxy.io/docs/envoy/latest/operations/admin
Scores
CVSS v3
7.1
EPSS
0.0018
EPSS Percentile
39.3%
Attack Vector
ADJACENT_NETWORK
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-419
Status
published
Products (2)
envoyproxy/gateway
< 1.2.6
envoyproxy/gateway
0 - 1.2.6Go
Published
Jan 23, 2025
Tracked Since
Feb 18, 2026