CVE-2023-32731

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 in https://github.com/grpc/grpc/pull/33005 https://github.com/grpc/grpc/pull/33005

References

Affected packages

Git / github.com/grpc/grpc

Affected ranges

Type

GIT

Repo

https://github.com/grpc/grpc

Events

Introduced

358bfb581feeda5bf17dd3b96da1074d84a6ef8d

Fixed

0bf4a618b17a3f0ed61c22364913c7f66fc1c61a

Database specific

{
    "versions": [
        {
            "introduced": "1.53.0"
        },
        {
            "fixed": "1.55.0"
        }
    ]
}

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-32731.json"