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CA-ACF2 Access to SYS1.LINKLIB must be properly protected.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-223454ACF2-ES-000330SV-223454r1225686_ruleCCI-000213medium
Description
If the operating system were to allow any user to make changes to software libraries, then those changes might be implemented without undergoing the appropriate testing and approvals that are part of a robust change management process. This requirement applies to operating systems with software libraries that are accessible and configurable, as in the case of interpreted languages. Software libraries also include privileged programs which execute with escalated privileges. Only qualified and authorized individuals must be allowed to obtain access to information system components for purposes of initiating changes, including upgrades and modifications. The operating system or software configuration management utility must enforce control of software installation by users based upon what types of software installations are permitted (e.g., updates and security patches to existing software) and what types of installations are prohibited (e.g., software whose pedigree with regard to being potentially malicious is unknown or suspect) by the organization. Satisfies: SRG-OS-000080-GPOS-00048, SRG-OS-000259-GPOS-00100, SRG-OS-000324-GPOS-00125, SRG-OS-000362-GPOS-00149
STIGDate
IBM z/OS ACF2 Security Technical Implementation Guide2026-06-15

Related Frameworks

4 mappings across 5 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (25) 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.

CFG-02Secure Baseline Configurations
1.00
CHG-04.5Library Privileges
1.00
CRY-01Use of Cryptographic Controls
1.00
DCH-01Data Protection
1.00
HRS-02Position Categorization
1.00
HRS-11Separation of Duties (SoD)
1.00
IAC-01Identity & Access Management (IAM)
1.00
IAC-01.2Authenticate, Authorize and Audit (AAA)
1.00
IAC-02Identification & Authentication for Organizational Users
1.00
IAC-03Identification & Authentication for Non-Organizational Users
1.00

+15 more (top 10 by confidence shown)

NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (98) 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-10Concurrent Session Control
1.00
AC-16Security and Privacy Attributes
1.00
AC-17(1)Monitoring and Control
1.00
AC-17(10)Authenticate Remote Commands
1.00
AC-17(2)Protection of Confidentiality and Integrity Using Encryption
1.00
AC-18(1)Authentication and Encryption
1.00
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(2)Automated Temporary and Emergency Account Management
1.00

+88 more (top 10 by confidence shown)

NIST 800-1710 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (3) 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.

3.1.1
1.00
3.1.2
1.00
3.1.7
1.00
CCI4 mappings
CCI-000213
1.00
CCI-001499
1.00
CCI-002235
1.00
CCI-003980
1.00
NIST CSF 2.00 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (4) 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.

PR.AA-05
1.00
PR.DS-10
1.00
PR.IR-01
1.00
PR.PS-05
0.50

Who does this work

17 NICE work roles and 9 EC-Council certifications.

This is an inference across published mappings, not a single claim by anyone. This check maps to a control, which maps to a Cybersecurity Framework outcome, which NIST assigns to the work roles below. EC-Council separately maps its certifications to those same roles.

A certification prepares someone for a role. It is not evidence that a holder is qualified, and neither NIST nor EC-Council has stated that any certification here addresses this check.

Work-role assignments published by NIST (NICE Framework Components 2.2.0 and the CSF 2.0 OLIR crosswalk). Certification mappings published by EC-Council.

Details

Check Text (C-223454r1225686_chk)

Execute a data set list of access to SYS1.LINKLIB. If the ESM data set rules for SYS1.LINKLIB allow inappropriate (e.g., global READ) access, this is a finding. If data set rules for SYS1.LINKLIB do not restrict READ, UPDATE and ALTER access to only systems programming personnel, this is a finding. If data set rules for SYS1.LINKLIB do not restrict READ and UPDATE access to only domain level security administrators, this is a finding. If data set rules for SYS1.LINKLIB do not restrict READ access to only system Level Started Tasks, authorized Data Center personnel, and auditors, this is a finding. If data set rules for SYS1.LINKLIB do not specify that all (i.e., failures and successes) UPDATE and/or ALTER access will be logged this is a finding.

Fix Text (F-25115r1001092_fix)

Configure the ESM rules for SYS1.LINKLIB limit access to system programmers only and all update and allocate access is logged.