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The Mainframe Product must isolate security functions from nonsecurity functions.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-205521SRG-APP-000233-MFP-000305SV-205521r961131_ruleCCI-001084medium
Description
An isolation boundary provides access control and protects the integrity of the hardware, software, and firmware that perform security functions. Security functions are the hardware, software, and/or firmware of the information system responsible for enforcing the system security policy and supporting the isolation of code and data on which the protection is based. Developers and implementers can increase the assurance in security functions by employing well-defined security policy models; structured, disciplined, and rigorous hardware and software development techniques; and sound system/security engineering principles. Implementation may include isolation of memory space and libraries. Applications restrict access to security functions through the use of access control mechanisms and by implementing least privilege capabilities.
STIGDate
Mainframe Product Security Requirements Guide2026-05-23

Related Frameworks

1 mapping across 3 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (2) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

END-16Restrict Access To Security Functions
0.50
SEA-04.1Security Function Isolation
0.50
NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (29) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

AC-2(1)Automated System Account Management
1.00
AC-2(10)Shared and Group Account Credential Change
1.00
AC-2(11)Usage Conditions
1.00
AC-2(3)Disable Accounts
1.00
AC-3Access Enforcement
1.00
AC-3(13)Attribute-based Access Control
1.00
AC-3(4)Discretionary Access Control
1.00
AC-3(7)Role-based Access Control
1.00
AC-6(10)Prohibit Non-privileged Users from Executing Privileged Functions
1.00
AC-6(8)Privilege Levels for Code Execution
1.00

+19 more (top 10 by confidence shown)

CCI1 mapping
CCI-001084
1.00

Details

Check Text (C-205521r961131_chk)

Examine installation and configuration settings. Security modules should be loaded into different datasets than nonsecurity modules. If the Mainframe Product does not differentiate between security and nonsecurity functions and provide procedure to isolate the functions, this is a finding.

Fix Text (F-5787r299797_fix)

Configure the Mainframe Product to load security modules into a separate dataset than nonsecurity modules.