![]() ![]() For the other services, this could have resulted in other unforeseen errors such as a lack of visibility into requests. For ext_authz that was configured with ``failure_mode_allow: true``, the request would have been allowed in this case. ![]() The receiving service would typically generate an error when decoding the protobuf message. 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. For affected components that are used for logging and/or visibility, requests may not be logged by the receiving service. 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. Envoy is an open source edge and service proxy designed for cloud-native applications.
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