Re: prevent users from SELECT-ing from pg_roles/pg_database

On Mon, 2024-05-27 at 11:33 +0200, Andreas Joseph Krogh wrote:
> På mandag 27. mai 2024 kl. 11:10:10, skrev Laurenz Albe <laurenz.albe@cybertec.at>:
> > On Mon, 2024-05-27 at 09:33 +0200, Andreas Joseph Krogh wrote:
> > > I tried:
> > > 
> > >    REVOKE SELECT ON pg_catalog.pg_database FROM public;
> > > 
> > > But that doesn't prevent a normal user from querying pg_database it seems…
> > 
> > It works here.
> > 
> > Perhaps the "normal" user is a member of "pg_read_all_data".
>  
> Don't think so:
> andreak@[local]:5432 16.3 andreak=# REVOKE pg_read_all_data from nisse;
> WARNING:  role "nisse" has not been granted membership in role "pg_read_all_data" by role "postgres"
> REVOKE ROLE

Possibilities:

- you are running a modified version of PostgreSQL
- you are actually a superuser, perhaps by inheritance

Yours,
Laurenz Albe