| Package | Affected versions | Patched versions |
|---|---|---|
| google.golang.org/grpc | ≥ 1.57.0, < 1.57.1≥ 1.58.0, < 1.58.3< 1.56.3 | 1.57.11.58.31.56.3 |
In affected releases of gRPC-Go, it is possible for an attacker to send HTTP/2 requests, cancel them, and send subsequent requests, which is valid by the HTTP/2 protocol, but would cause the gRPC-Go server to launch more concurrent method handlers than the configured maximum stream limit.
This vulnerability was addressed by #6703 and has been included in patch releases: 1.56.3, 1.57.1, 1.58.3. It is also included in the latest release, 1.59.0.
Along with applying the patch, users should also ensure they are using the grpc.MaxConcurrentStreams server option to apply a limit to the server's resources used for any single connection.
None.
#6703
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