GHSA-2hp7-65r3-wv54 NornicDB has Improper Network Binding in its Bolt Server, allowing unauthorized remote access

• Go github.com/orneryd/nornicdb: < 1.0.42-hotfix → fixed in 1.0.42-hotfix

Summary The `--address` CLI flag (and `NORNICDB_ADDRESS` / `server.host` config key) is plumbed through to the HTTP server correctly but never reaches the Bolt server config. The Bolt listener therefore always binds to the wildcard address (all interfaces), regardless of what the user configures. On a LAN, this exposes the graph database — with its default `admin:password` credentials — to any device sharing the network. Version • `nornicdb v1.0.39` • Built from commit `afe7c9d` on `main` • Platform: macOS (darwin 25.4.0, arm64) Reproduction ``` $ nornicdb serve --address 127.0.0.1 --bolt-port 7687 --http-port 7474 ... ``` Output claims Bolt is on localhost: ``` Bolt server listening on bolt://localhost:7687 ``` But the actual socket: ``` $ netstat -an -p tcp | grep 7687 tcp46 0 0 *.7687 *.* LISTEN $ lsof -iTCP:7687 -sTCP:LISTEN -n -P nornicdb ... IPv6 ... TCP *:7687 (LISTEN) ``` HTTP port is correctly bound: ``` tcp4 127.0.0.1.7474 *.* LISTEN ``` Reachable from another host on the LAN: ``` $ nc -z 192.168.x.y 7687 Connection to 192.168.x.y port 7687 [tcp/*] succeeded! ``` Setting `NORNICDB_BOLT_ADDRESS=127.0.0.1` or `server.host: "127.0.0.1"` in `config.yaml` has no effect on the Bolt listener. Root Cause In `pkg/bolt/server.go:774-776`: ```go func (s *Server) ListenAndServe() error { addr := fmt.Sprintf(":%d", s.config.Port) listener, err := net.Listen("tcp", addr) ... } ``` `bolt.Config` (line 474) has no `Host`/`Address`/`Addr` field — only `Port`. The CLI flag `--address` is stored in a local variable in `cmd/nornicdb/main.go:80` and used to format user-facing log output (line 637–644), but is never copied into `boltConfig` at line 600–609 when Bolt is initialized. Since `ListenAndServe` calls `net.Listen("tcp", ":7687")` with an empty host, Go binds the wildcard socket on all interfaces. Suggested Fix 1. Add a `Host string` field to `bolt.Config` (default `"127.0.0.1"`, matching the CLI flag default). 2. In `cmd/nornicdb/main.go` around line 601, wire it through: ```go boltConfig.Host = address boltConfig.Port = boltPort ``` 3. In `pkg/bolt/server.go:775`, use the host: ```go addr := net.JoinHostPort(s.config.Host, strconv.Itoa(s.config.Port)) ``` Security Impact • Default `admin:password` credentials + wildcard binding = anyone on the same WiFi can issue arbitrary Cypher queries (read, write, delete nodes) against NornicDB instances running with default setup. • Users following the README will reasonably assume `--address 127.0.0.1` (the documented default) binds *both* protocols to localhost. • Workaround: host-firewall rules (e.g. macOS `pf`) blocking non-loopback → 7687. Not discoverable from the docs.