Information
The SYSCAT.TABAUTH 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 view.
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.
1. Connect to the DB2 database.
db2 => connect to $DB2INSTANCE user $USERNAME using $PASSWORD
2. Run the following command from the DB2 command window:
db2 => REVOKE SELECT ON SYSCAT.TABAUTH FROM PUBLIC