6.4 Restrict Access to SYSCAT.COLAUTH

Information

The SYSCAT.COLAUTH view contains the column privileges granted to the user or groups of users. It is recommended that the PUBLIC role be restricted from accessing this view.

This view contains all the grants in the database and may be used as an attack vector.

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.COLAUTH FROM PUBLIC

See Also

https://workbench.cisecurity.org/files/1654

Item Details

Category: ACCESS CONTROL

References: 800-53|AC-6

Plugin: IBM_DB2DB

Control ID: b4e11180621a05610562bb3092fa17f957eb24e48e4d4414306c3eaca7df0e07