IBM z/OS JES2 input sources must be properly controlled.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-223747	RACF-JS-000030	SV-223747r604139_rule		Medium

Description
To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must be properly configured to incorporate access control methods that do not rely solely on the possession of a certificate for access. Successful authentication must not automatically give an entity access to an asset or security boundary. Authorization procedures and controls must be implemented to ensure each authenticated entity also has a validated and current authorization. Authorization is the process of determining whether an entity, once authenticated, is permitted to access a specific asset. Information systems use access control policies and enforcement mechanisms to implement this requirement. Access control policies include: identity-based policies, role-based policies, and attribute-based policies. Access enforcement mechanisms include: access control lists, access control matrices, and cryptography. These policies and mechanisms must be employed by the application to control access between users (or processes acting on behalf of users) and objects (e.g., devices, files, records, processes, programs, and domains) in the information system.

Description

To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-approved PKIs, all DoD systems (e.g., web servers and web portals) must be properly configured to incorporate access control methods that do not rely solely on the possession of a certificate for access. Successful authentication must not automatically give an entity access to an asset or security boundary. Authorization procedures and controls must be implemented to ensure each authenticated entity also has a validated and current authorization. Authorization is the process of determining whether an entity, once authenticated, is permitted to access a specific asset. Information systems use access control policies and enforcement mechanisms to implement this requirement. Access control policies include: identity-based policies, role-based policies, and attribute-based policies. Access enforcement mechanisms include: access control lists, access control matrices, and cryptography. These policies and mechanisms must be employed by the application to control access between users (or processes acting on behalf of users) and objects (e.g., devices, files, records, processes, programs, and domains) in the information system.

STIG	Date
IBM z/OS RACF Security Technical Implementation Guide	2023-12-27

Details

Check Text ( C-25420r514929_chk )
From the ISPF Command Shell enter: RL JESINPUT * If the RACF resources and/or generic equivalent identified below are defined with access restricted to the appropriate personnel, this is not a finding. INTRDR nodename OFFn.* OFFn.JR OFFn.SR Rnnnn.RDm RDRnn STCINRDR TSUINRDR and/or TSOINRDR Note: Examples of appropriate might be access to the offload input sources is limited to systems personnel (e.g., operations staff) as directed by site operations and the site security plan.

Check Text ( C-25420r514929_chk )

From the ISPF Command Shell enter:
RL JESINPUT *

If the RACF resources and/or generic equivalent identified below are defined with access restricted to the appropriate personnel, this is not a finding.

INTRDR
nodename
OFFn.*
OFFn.JR
OFFn.SR
Rnnnn.RDm
RDRnn
STCINRDR
TSUINRDR and/or TSOINRDR

Note: Examples of appropriate might be access to the offload input sources is limited to systems personnel (e.g., operations staff) as directed by site operations and the site security plan.

Fix Text (F-25408r514930_fix)
Configure access for resources defined to the JESINPUT resource class to restrict to the appropriate personnel. Grant read access to authorized users for each of the following input sources: INTRDR nodename OFFn.* OFFn.JR OFFn.SR Rnnnn.RDm RDRnn STCINRDR TSUINRDR and/or TSOINRDR The resource definition will be generic if all of the resources of the same type have identical access controls (e.g., if all off load receivers are equivalent).

Fix Text (F-25408r514930_fix)

Configure access for resources defined to the JESINPUT resource class to restrict to the appropriate personnel.

Grant read access to authorized users for each of the following input sources:

INTRDR
nodename
OFFn.*
OFFn.JR
OFFn.SR
Rnnnn.RDm
RDRnn
STCINRDR
TSUINRDR and/or TSOINRDR

The resource definition will be generic if all of the resources of the same type have identical access controls (e.g., if all off load receivers are equivalent).