Only authorized system accounts must have the SYSTEM tablespace specified as the default tablespace.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-61459	O121-BP-023600	SV-75949r3_rule		Medium

Description
The Oracle SYSTEM tablespace is used by the database to store all DBMS system objects. Other use of the system tablespace may compromise system availability and the effectiveness of host system access controls to the tablespace files.

STIG	Date
Oracle Database 12c Security Technical Implementation Guide	2019-12-11

Details

Check Text ( C-62349r4_chk )
Run the query: select property_name, property_value from database_properties where property_name in ('DEFAULT_PERMANENT_TABLESPACE','DEFAULT_TEMP_TABLESPACE'); If either value is set to SYSTEM, this is a finding. Run the query: select username from dba_users where (default_tablespace = 'SYSTEM' or temporary_tablespace = 'SYSTEM') and username not in ('LBACSYS','OUTLN','SYS','SYSTEM', 'SYSKM', 'SYSDG', 'SYSBACKUP'); If any non-default account records are returned, this is a finding.

Check Text ( C-62349r4_chk )

Run the query:

select property_name, property_value
from database_properties
where property_name in
('DEFAULT_PERMANENT_TABLESPACE','DEFAULT_TEMP_TABLESPACE');

If either value is set to SYSTEM, this is a finding.

Run the query:

select username from dba_users
where (default_tablespace = 'SYSTEM' or temporary_tablespace = 'SYSTEM')
and username not in
('LBACSYS','OUTLN','SYS','SYSTEM', 'SYSKM', 'SYSDG', 'SYSBACKUP');

If any non-default account records are returned, this is a finding.

Fix Text (F-67375r2_fix)
Create and dedicate tablespaces to support only one application. Do not share tablespaces between applications. Do not grant quotas to application object owners on tablespaces not dedicated to their associated application. Run the queries: alter database default tablespace ; alter database default temporary tablespace ; alter user default tablespace temporary tablespace ; Replace with the named user account. Replace with the new default tablespace name. Replace with the new default temporary tablespace name (typically TEMP). Repeat the "alter user" for each affected user account.

Fix Text (F-67375r2_fix)

Create and dedicate tablespaces to support only one application.

Do not share tablespaces between applications.

Do not grant quotas to application object owners on tablespaces not dedicated to their associated application.

Run the queries:

alter database default tablespace ;
alter database default temporary tablespace ;

alter user default tablespace temporary tablespace ;

Replace with the named user account.
Replace with the new default tablespace name.
Replace with the new default temporary tablespace name (typically TEMP).
Repeat the "alter user" for each affected user account.