cvedb.io
CVE-2023-27488
MEDIUM · CVSS 5.4
EPSS exploitation probability: 0%
Published 2023-04-04T18:15:07.083 · Last modified 2026-06-17T05:45:19.070

Summary

Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9, escalation of privileges is possible when `failure_mode_allow: true` is configured for `ext_authz` filter. For affected components that are used for logging and/or visibility, requests may not be logged by the receiving service. When Envoy was configured to use ext_authz, ext_proc, tap, ratelimit filters, and grpc access log service and an http header with non-UTF-8 data was received, Envoy would generate an invalid protobuf message and send it to the configured service. The receiving service would typically generate an error when decoding the protobuf message. For ext_authz that was configured with ``failure_mode_allow: true``, the request w

Affected products

envoyproxy — envoy

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.