The role(s)/group(s) used to modify database structure (including but not necessarily limited to tables, indexes, storage, etc.) and logic modules (stored procedures, functions, triggers, links to software external to DB2, etc.) must be restricted to authorized users.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-74475	DB2X-00-003300	SV-89149r1_rule		Medium

Description
If the DBMS were to allow any user to make changes to database structure or logic, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust change management process. Accordingly, only qualified and authorized individuals shall be allowed to obtain access to information system components for purposes of initiating changes, including upgrades and modifications. Unmanaged changes that occur to the database software libraries or configuration can lead to unauthorized or compromised installations.

Description

If the DBMS were to allow any user to make changes to database structure or logic, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust change management process. Accordingly, only qualified and authorized individuals shall be allowed to obtain access to information system components for purposes of initiating changes, including upgrades and modifications. Unmanaged changes that occur to the database software libraries or configuration can lead to unauthorized or compromised installations.

STIG	Date
IBM DB2 V10.5 LUW Security Technical Implementation Guide	2019-09-27

Details

Check Text ( C-74401r1_chk )
Get the list of qualified and authorized owners from ISSO or DBA. The following view list information about privileges held by the users, the identities of users granting privileges, and the object ownership: DB2> SELECT * FROM SYSIBMADM.PRIVILEGES If any of the privileges is held by non-qualified and non-authorized individuals, this is a finding.

Fix Text (F-81075r1_fix)
Use the appropriate variation of the REVOKE command to revoke the privileges from non-qualified and non-authorized individuals: DB2> REVOKE Notes: Information about each database is automatically maintained in a set of views called the system catalog which is created when the database is created. This system catalog describes tables, columns, indexes, programs, privileges, and other objects. information on the system catalog is available in the IBM knowledge base: http://www-01.ibm.com/support/knowledgecenter/SSEPGG_10.5.0/com.ibm.db2.luw.admin.sec.doc/doc/c0005478.html?lang=en http://www-01.ibm.com/support/knowledgecenter/SSEPGG_10.5.0/com.ibm.db2.luw.admin.sec.doc/doc/c0005817.html

Fix Text (F-81075r1_fix)

Use the appropriate variation of the REVOKE command to revoke the privileges from non-qualified and non-authorized individuals:
DB2> REVOKE

Notes: Information about each database is automatically maintained in a set of views called the system catalog which is created when the database is created. This system catalog describes tables, columns, indexes, programs, privileges, and other objects.

information on the system catalog is available in the IBM knowledge base:

http://www-01.ibm.com/support/knowledgecenter/SSEPGG_10.5.0/com.ibm.db2.luw.admin.sec.doc/doc/c0005478.html?lang=en

http://www-01.ibm.com/support/knowledgecenter/SSEPGG_10.5.0/com.ibm.db2.luw.admin.sec.doc/doc/c0005817.html