Hello hackers,
Postgres provides the `COPY .. TO/FROM PROGRAM` statement. This is dangerous from a security perspective because it allows users to escape from the SQL sandbox and gain shell access on the instance.
Now there's the `pg_execute_server_program` predefined role to restrict access to `COPY.. TO/FROM PROGRAM` but if somehow a pg user gains superuser privileges then the predefined role is of no use.
So I wonder if we could remove the possibility of shell access by providing a `--with-copy-program` compile flag.
Best regards,
Steve Chavez
