Information
The SYSCAT.ROUTINES view contains all user-defined routines, functions, and stored procedures in the database. It is recommended that the PUBLIC role be restricted from accessing this view.
Rationale:
User-defined functions and routines should not be exposed to the public for exploits.
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 SYSCAT.ROUTINES FROM PUBLIC