gRPC-Go HTTP/2 Rapid Reset vulnerability
Impact
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.
Patches
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.
Workarounds
None.
References
#6703
| Software | From | Fixed in |
|---|---|---|
google.golang.org/grpc
|
- | 1.56.3 |
|
google.golang.org/grpc
|
1.57.0 | 1.57.1 |
|
google.golang.org/grpc
|
1.58.0 | 1.58.3 |
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