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CVE-2023-32732: [http2] Dont drop connections on metadata limit exceeded by ctiller · Pull Request #32309 · grpc/grpc
gRPC contains a vulnerability whereby a client can cause a termination of connection between a HTTP2 proxy and a gRPC server: a base64 encoding error for -bin suffixed headers will result in a disconnection by the gRPC server, but is typically allowed by HTTP2 proxies. We recommend upgrading beyond the commit in https://github.com/grpc/grpc/pull/32309 https://www.google.com/url
If we get an error on a stream, all we need to do is cancel that stream.
If instead we get an error not associated with a stream, we should close the transport.
Current behavior was to just close the transport always, and this was a bad bug.
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gRPC contains a vulnerability whereby a client can cause a termination of connection between a HTTP2 proxy and a gRPC server: a base64 encoding error for `-bin` suffixed headers will result in a disconnection by the gRPC server, but is typically allowed by HTTP2 proxies. We recommend upgrading beyond the commit in https://github.com/grpc/grpc/pull/32309.