STIGQter: STIG Summary: IBM z/OS ACF2 Security Technical Implementation Guide Version: 8 Release: 2 Benchmark Date: 23 Apr 2021:

CA-ACF2 must protect Memory and privileged program dumps in accordance with proper security requirements.

DISA Rule

SV-223430r533198_rule

Vulnerability Number

V-223430

Group Title

SRG-OS-000080-GPOS-00048

Rule Version

ACF2-ES-000090

Severity

CAT II

CCI(s)

• CCI-000213 - The information system enforces approved authorizations for logical access to information and system resources in accordance with applicable access control policies.

Weight

10

Fix Recommendation

Memory and privileged program dump resources are provided via resources in the FACILITY resource class. Ensure that the following are properly specified in the ACP.

(Note: The resource type, resources, and/or resource prefixes identified below are examples of a possible installation. The actual resource type, resources, and/or resource prefixes are determined when the product is actually installed on a system through the product’s installation guide and can be site specific.)

Below is listed the access requirements for memory and privileged program dump resources. Ensure the guidelines for the resource type, resources, and/or generic equivalent are followed. When protecting the facilities for dumps lists via the FACILITY resource class, ensure that the following items are in effect:

IEAABD.
IEAABD.DMPAUTH.
IEAABD.DMPAKEY.

The ACF2 resources are defined with a default access of PREVENT.

Ensure that no access is given to IEAABD. resource.

Example:
$KEY(IEAABD) TYPE(FAC)
- UID(*) PREVENT

IEAABD.DMPAUTH. READ access is limited to authorized users that have a valid job duties requirement for access. UPDATE access will be restricted to system programming personnel and access will be logged.

Example:
$KEY(IEAABD) TYPE(FAC)
DMPAUTH.- UID(sysprgmr) SERVICE(UPDATE) LOG
DMPAUTH.- UID(authusers) SERVICE(READ)
DMPAUTH.- UID(*) PREVENT

IEAABD.DMPAKEY. access will be restricted to system programming personnel and access will be logged.

Example:
$KEY(IEAABD) TYPE(FAC)
DMPAKEY.- UID(sysprgmr) LOG
DMPAKEY.- UID(*) PREVENT

Check Contents

From a command input screen enter:

SET RESOURCE (FAC)
SET VERBOSE
LIST LIKE (IEAABD-)
NOTE: If CLASMAP defines FACILITY as anything other than the default of TYPE(FAC), replace FAC with the appropriate three letters.

If the IEAABD. resource and/or generic equivalent is defined with PREVENT access and that access is not available to any user, this is not a finding.

If the IEAABD.DMPAUTH. resource and/or generic equivalent is defined and access with SERVICE(READ) is limited to authorized users that have a valid job duties requirement for access, this is not a finding.

If the IEAABD.DMPAUTH. resource and/or generic equivalent is defined and access with the SERVICE(UPDATE) or greater is restricted to only systems personnel and that all access is logged, this is not a finding.

If the IEAABD.DMPAKEY. resource and/or generic equivalent is defined and all access is restricted to systems personnel and that all access is logged, this is not a finding.

Vulnerability Number

V-223430

Documentable

False

Rule Version

ACF2-ES-000090

Severity Override Guidance

From a command input screen enter:

SET RESOURCE (FAC)
SET VERBOSE
LIST LIKE (IEAABD-)
NOTE: If CLASMAP defines FACILITY as anything other than the default of TYPE(FAC), replace FAC with the appropriate three letters.

If the IEAABD. resource and/or generic equivalent is defined with PREVENT access and that access is not available to any user, this is not a finding.

If the IEAABD.DMPAUTH. resource and/or generic equivalent is defined and access with SERVICE(READ) is limited to authorized users that have a valid job duties requirement for access, this is not a finding.

If the IEAABD.DMPAUTH. resource and/or generic equivalent is defined and access with the SERVICE(UPDATE) or greater is restricted to only systems personnel and that all access is logged, this is not a finding.

If the IEAABD.DMPAKEY. resource and/or generic equivalent is defined and all access is restricted to systems personnel and that all access is logged, this is not a finding.

Check Content Reference

M

Target Key

4100

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