On Classified Systems, Logical Partition must be restricted with read/write access to only its own IOCDS.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-24379	HLP0020	SV-30053r2_rule	ECCD-1 ECCD-2	Medium

Description
Unrestricted control over the IOCDS files could result in unauthorized updates and impact the configuration of the environment by allowing unauthorized access to a restricted resource. This could severely damage the integrity of the environment and the system resources.

STIG	Date
IBM Hardware Management Console (HMC) STIG	2017-09-28

Details

Check Text ( C-3266r1_chk )
Using the Hardware Management Console, verify that a logical partition cannot read or write to any IOCDS. Use the Security Definitions Page panel to do this by checking to see if the Input/Output (I/O) Configuration Control option has been turned on. NOTE: The default is applicable to only classified systems. Confirm whether or not the I/O Configuration Control option is checked. If the Logical Partition is not restricted with read/write access to only its own IOCDS, this is a FINDING.

Check Text ( C-3266r1_chk )

Using the Hardware Management Console, verify that a logical partition cannot read or write to any IOCDS. Use the Security Definitions Page panel to do this by checking to see if the Input/Output (I/O) Configuration Control option has been turned on.

NOTE: The default is applicable to only classified systems.

Confirm whether or not the I/O Configuration Control option is checked.

If the Logical Partition is not restricted with read/write access to only its own IOCDS, this is a FINDING.

Fix Text (F-2346r1_fix)
Review the Security Definition parameters specified under Processor Resource/Systems Manager (PR/SM). Verify and implement the correct settings.