NocoDB: Path Traversal via SQLite Source Filename

Summary

An authenticated user with base-create permission can attach a SQLite source pointing at an arbitrary file on the NocoDB host, including NocoDB's own internal databases.

Details

The SQLite client and the base/integration create services accepted a caller-supplied filename and passed it to fs.exists and fs.open('w') without restricting the location. A user could point a source at noco.db, at a tenant database under nc_minimal_dbs/, or at any writable path the NocoDB process can reach, and then read or overwrite its contents through the regular table APIs.

Impact

Disclosure and modification of NocoDB internal state, of other tenants' databases, and of any file the NocoDB process can read or write. Authentication and base-create permission are required.

Credit

This issue was reported by @Mouhebbenelwafi.