When gRPC HTTP2 stack raised a header size exceeded error, it skipped parsing the rest of the HPACK frame. This caused any HPACK table mutations to also be skipped, resulting in a desynchronization of HPACK tables between sender and receiver. If leveraged, say, between a proxy and a backend, this could lead to requests from the proxy being interpreted as containing headers from different proxy clients - leading to an information leak that can be used for privilege escalation or data exfiltration. We recommend upgrading beyond the commit contained inย https://github.com/grpc/grpc/pull/33005 https://github.com/grpc/grpc/pull/33005
CPE | Name | Operator | Version |
---|---|---|---|
grpc | eq | cmd/protoc-gen-go-grpc/v1.3.0 | |
grpc | eq | 1.53.0-de |