ZITADEL Go's GRPC example code vulnerability - GO-2024-2687 HTTP/2 CONTINUATION flood in net/http

Summary

### Summary Applications using the `zitadel-go` `v3` library (`next` branch) might be impacted by package vulnerabilities. The output of `govulncheck` suggests that only `example` code seems to be impacted, based on 1 of the 3 potential vulnerabilities. This vulnerability is located in the transitive dependency `golang.org/x/net v0.19.0`, [CVE-2023-45288](https://www.cve.org/CVERecord?id=CVE-2023-45288)

### Patches 3.0.0-next versions are fixed on >= [3.0.0-next.3](https://github.com/zitadel/zitadel-go/releases/tag/v3.0.0-next.3)

ZITADEL recommends upgrading to the latest versions available in due course.

### Workarounds

If updating the zitadel-go library is not an option, updating the affected (transient) dependencies works as a workaround.

### Details

#### Direct deps:

- [GO-2024-2631](https://pkg.go.dev/vuln/GO-2024-2631) Decompression bomb vulnerability in github.com/go-jose/go-jose - github.com/go-jose/go-jose/v3 Fixed in v3.0.3.

This module is necessary because [github.com/go-jose/go-jose/v3](https://pkg.go.dev/github.com/go-jose/go-jose/v3@v3.0.1) is imported in `github.com/zitadel/zitadel-go/v3/pkg/client/system`.

- [GO-2024-2611](https://pkg.go.dev/vuln/GO-2024-2611) Infinite loop in JSON unmarshaling in google.golang.org/protobuf - google.golang.org/protobuf/encoding/protojson - google.golang.org/protobuf/internal/encoding/json Fixed in v1.33.0.

This module is necessary because [google.golang.org/protobuf/reflect/protoreflect](https://pkg.go.dev/google.golang.org/protobuf@v1.31.0/reflect/protoreflect) is imported in `github.com/zitadel/zitadel-go/v3/example/api/grpc/proto`.

#### Transitive deps: - [GO-2024-2687](https://pkg.go.dev/vuln/GO-2024-2687) HTTP/2 CONTINUATION flood in net/http - golang.org/x/net/http2 Fixed in v0.23.0.

This module is necessary because [golang.org/x/net/trace](https://pkg.go.dev/golang.org/x/net@v0.19.0/trace) is imported in: - `github.com/zitadel/zitadel-go/v3/example/api/grpc` - `google.golang.org/grpc`

#### `govulncheck`

```console === Symbol Results ===

Vulnerability #1: GO-2024-2687 HTTP/2 CONTINUATION flood in net/http More info: https://pkg.go.dev/vuln/GO-2024-2687 Module: golang.org/x/net Found in: golang.org/x/net@v0.19.0 Fixed in: golang.org/x/net@v0.23.0 Example traces found: #1: example/api/grpc/proto/api_grpc.pb.go:239:34: proto.exampleServiceAddTasksServer.Recv calls grpc.serverStream.RecvMsg, which eventually calls http2.ConnectionError.Error #2: pkg/client/auth.go:92:20: client.ScopeProjectID calls fmt.Sprintf, which eventually calls http2.ErrCode.String #3: pkg/client/auth.go:92:20: client.ScopeProjectID calls fmt.Sprintf, which eventually calls http2.FrameHeader.String #4: pkg/client/auth.go:92:20: client.ScopeProjectID calls fmt.Sprintf, which eventually calls http2.FrameType.String #5: example/api/grpc/main.go:63:24: grpc.main calls grpc.Server.Serve, which eventually calls http2.Framer.ReadFrame #6: example/api/grpc/main.go:63:24: grpc.main calls grpc.Server.Serve, which eventually calls http2.Framer.WriteContinuation #7: example/api/grpc/main.go:63:24: grpc.main calls grpc.Server.Serve, which eventually calls http2.Framer.WriteData #8: example/api/grpc/main.go:63:24: grpc.main calls grpc.Server.Serve, which eventually calls http2.Framer.WriteGoAway #9: example/api/grpc/main.go:63:24: grpc.main calls grpc.Server.Serve, which eventually calls http2.Framer.WriteHeaders #10: example/api/grpc/main.go:63:24: grpc.main calls grpc.Server.Serve, which eventually calls http2.Framer.WritePing #11: example/api/grpc/main.go:63:24: grpc.main calls grpc.Server.Serve, which eventually calls http2.Framer.WriteRSTStream #12: example/api/grpc/main.go:63:24: grpc.main calls grpc.Server.Serve, which eventually calls http2.Framer.WriteSettings #13: example/api/grpc/main.go:63:24: grpc.main calls grpc.Server.Serve, which eventually calls http2.Framer.WriteSettingsAck #14: example/api/grpc/main.go:63:24: grpc.main calls grpc.Server.Serve, which eventually calls http2.Framer.WriteWindowUpdate #15: example/api/grpc/proto/api_grpc.pb.go:239:34: proto.exampleServiceAddTasksServer.Recv calls grpc.serverStream.RecvMsg, which eventually calls http2.GoAwayError.Error #16: pkg/client/auth.go:92:20: client.ScopeProjectID calls fmt.Sprintf, which eventually calls http2.Setting.String #17: pkg/client/auth.go:92:20: client.ScopeProjectID calls fmt.Sprintf, which eventually calls http2.SettingID.String #18: example/api/grpc/main.go:63:24: grpc.main calls grpc.Server.Serve, which eventually calls http2.SettingsFrame.ForeachSetting #19: example/api/grpc/proto/api_grpc.pb.go:239:34: proto.exampleServiceAddTasksServer.Recv calls grpc.serverStream.RecvMsg, which eventually calls http2.StreamError.Error #20: example/app/app.go:111:27: app.main calls http.ListenAndServe, which eventually calls http2.chunkWriter.Write #21: example/api/grpc/proto/api_grpc.pb.go:239:34: proto.exampleServiceAddTasksServer.Recv calls grpc.serverStream.RecvMsg, which eventually calls http2.connError.Error #22: pkg/client/auth.go:92:20: client.ScopeProjectID calls fmt.Sprintf, which eventually calls http2.duplicatePseudoHeaderError.Error #23: pkg/client/auth.go:23:42: client.JWTAuthentication calls profile.NewJWTProfileTokenSource, which eventually calls http2.gzipReader.Close #24: pkg/authentication/state.go:20:26: authentication.State.Encrypt calls crypto.EncryptAES, which eventually calls http2.gzipReader.Read #25: pkg/client/auth.go:92:20: client.ScopeProjectID calls fmt.Sprintf, which eventually calls http2.headerFieldNameError.Error #26: pkg/client/auth.go:92:20: client.ScopeProjectID calls fmt.Sprintf, which eventually calls http2.headerFieldValueError.Error #27: pkg/client/auth.go:92:20: client.ScopeProjectID calls fmt.Sprintf, which eventually calls http2.pseudoHeaderError.Error #28: example/app/app.go:111:27: app.main calls http.ListenAndServe, which eventually calls http2.stickyErrWriter.Write #29: pkg/client/auth.go:23:42: client.JWTAuthentication calls profile.NewJWTProfileTokenSource, which eventually calls http2.transportResponseBody.Close #30: pkg/authentication/state.go:20:26: authentication.State.Encrypt calls crypto.EncryptAES, which eventually calls http2.transportResponseBody.Read #31: pkg/client/auth.go:92:20: client.ScopeProjectID calls fmt.Sprintf, which eventually calls http2.writeData.String

Your code is affected by 1 vulnerability from 1 module. This scan also found 2 vulnerabilities in packages you import and 1 vulnerability in modules you require, but your code doesn't appear to call these vulnerabilities. ```

### PoC No specific configuration required.

### Impact Indirect package vulnerability. Users following example code might be impacted.

### References

- https://pkg.go.dev/vuln/GO-2024-2631 - https://pkg.go.dev/vuln/GO-2024-2611 - https://pkg.go.dev/vuln/GO-2024-2687

### Credits

Thanks to @helpisdev for reporting this.