Detections
Analytics

4.3.40 Restrict Access to SYSIBM.SYSTBSPACEAUTH

Information

The SYSIBM.SYSTBSPACEAUTH table contains users or groups that have been granted the USE privilege on a particular tablespace in the database. It is recommended that the PUBLIC role be restricted from accessing this table.

Rationale:

PUBLIC should not have access to the grants of the tablespaces in a database. This could lead to an exploit.

Solution

Perform the following to revoke access from PUBLIC.

Connect to the Db2 database.

db2 => connect to <dbname>

Run the following command:

db2 => REVOKE SELECT ON SYSIBM.SYSTBSPACEAUTH FROM PUBLIC

See Also

https://workbench.cisecurity.org/benchmarks/23492

Item Details

Category: ACCESS CONTROL, MEDIA PROTECTION

References: 800-53|AC-3, 800-53|AC-5, 800-53|AC-6, 800-53|MP-2, CSCv7|14.6

Plugin: IBM_DB2DB

Control ID: c02bcd6ec0ed9f31aaa2d77fbef9d4e05d8977eb980678310b2d5f9f395844d4