[ADMIN] New role can connect to all dbs with no grants

[Gordon Shannon]

Hi. I'm confused about how to restrict databases from roles. When I create
a new database, I thought I would have to grant connect to a role in order
for that role to connect to it and see its objects.

But...

[***@toolbox:acct] 14:50:23> create database foo owner postgres;
CREATE DATABASE
[***@toolbox:acct] 14:50:34> \c foo
psql (9.0.4, server 9.1.1)
WARNING: psql version 9.0, server version 9.1.
Some psql features might not work.
You are now connected to database "foo".
[***@toolbox:foo] 14:51:15> create table stuff(id int);
CREATE TABLE
[***@toolbox:foo] 14:51:31> create role bob login password 'secret';
CREATE ROLE
[***@toolbox:foo] 14:51:57> \c foo bob
Password for user bob:
psql (9.0.4, server 9.1.1)
WARNING: psql version 9.0, server version 9.1.
Some psql features might not work.
You are now connected to database "foo" as user "bob".
[I did not grant access to bob, why can he connect? He can also see the
table metadata...]
[***@toolbox:foo] 14:52:14> \dt
List of relations
Schema | Name | Type | Owner
--------+-------+-------+-------
public | stuff | table | admin
(1 row)

[***@toolbox:foo] 14:52:16> \d stuff
Table "public.stuff"
Column | Type | Modifiers
--------+---------+-----------
id | integer |

[***@toolbox:foo] 14:53:38> select * from stuff;
ERROR: permission denied for relation stuff


I expected that I'd have to do a GRANT CONNECT for this to occur.
Also, I tried REVOKE CONNECT ON DATABASE foo FROM bob, and he can still
connect as before.

What am I missing?

Thanks!
Gordon (9.1.1/Linux)


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[Mark Lane]

Gordon

Post by Gordon Shannon
Hi. I'm confused about how to restrict databases from roles. When I create
a new database, I thought I would have to grant connect to a role in order
for that role to connect to it and see its objects.
But...
CREATE DATABASE
psql (9.0.4, server 9.1.1)
WARNING: psql version 9.0, server version 9.1.
Some psql features might not work.
You are now connected to database "foo".
CREATE TABLE
CREATE ROLE
psql (9.0.4, server 9.1.1)
WARNING: psql version 9.0, server version 9.1.
Some psql features might not work.
You are now connected to database "foo" as user "bob".
[I did not grant access to bob, why can he connect? He can also see the
table metadata...]
List of relations
Schema | Name | Type | Owner
--------+-------+-------+-------
public | stuff | table | admin
(1 row)
Table "public.stuff"
Column | Type | Modifiers
--------+---------+-----------
id | integer |
ERROR: permission denied for relation stuff
I expected that I'd have to do a GRANT CONNECT for this to occur.
Also, I tried REVOKE CONNECT ON DATABASE foo FROM bob, and he can still
connect as before.
What am I missing?

There is a public role that can connect to foo and all roles are part of
it, you will need to

REVOKE ALL ON DATABASE foo FROM public;

Post by Gordon Shannon
Thanks!
Gordon (9.1.1/Linux)
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[Gordon Shannon]

That worked, thanks for the clarification.

Gordon

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