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4.3.39 Restrict Access to SYSIBM.SYSTABAUTH

Information

The SYSIBM.SYSTABAUTH table contains users or groups that have been granted one or more privileges on a table or view. It is recommended that the PUBLIC role be restricted from accessing this table.

Rationale:

PUBLIC should not have access to the grants of views and tables 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.SYSTABAUTH 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: d320f92831947c8de0d23278b91788bde284aad24eca009c4c79bccd22b6f1ce