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-256863	HLP0020	SV-256863r958472_rule		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) Security Technical Implementation Guide	2024-06-24

Details

Check Text (C-60538r890933_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-60481r890934_fix)

Review the Security Definition parameters specified under Processor Resource/Systems Manager (PR/SM).
Verify and implement the correct settings.