Check: ACF0310
zOS ACF2 STIG:
ACF0310
(in versions v6 r43 through v6 r37)
Title
The EXITS GSO record value must specify the module names of site written ACF2 exit routines. (Cat II impact)
Discussion
The system-wide options control the default settings for determining how the ACP will function when handling requests for access to the operating system environment, ACP, and customer data. The ACP provides the ability to set a number of these fields at the subsystem level. If no setting is found, the system-wide defaults will be used. The improper setting of any one of these fields, individually or in combination with another, can compromise the security of the processing environment. In addition, failure to establish standardized settings for the ACP control options introduces the possibility of exposure during a migration process or contingency plan activation.
Check Content
a) Refer to the following report produced by the ACF2 Data Collection: - ACF2CMDS.RPT(ACFGSO) Automated Analysis requires Additional Analysis. Automated Analysis Refer to the following report produced by the ACF2 Data Collection: - PDI(ACF0310) b) If the GSO EXITS record values conform to the following requirements, there is NO FINDING. Specifies the module names of site written ACF2 exit routines. NOTE: The DSNPOST exit is optional and is not required to be specified in the GSO EXITS record. DSNPOST(module) SEVPRE(SEVPRE01) SEVPOST(SEVPST01) NOTE: No other exits are authorized at this time. NOTE: Local changes will be documented in writing with supporting documentation. c) If there is any deviation from the above requirements in the GSO EXITS record values, this is a FINDING.
Fix Text
The IAO will ensure the EXITS GSO value specifies the module names of site written ACF2 exit routines. Specifies the module names of site written ACF2 exit routines. NOTE: The DSNPOST exit is optional and is not required to be specified in the GSO EXITS record. DSNPOST(module) SEVPRE(SEVPRE01) SEVPOST(SEVPST01) Example: SET C(GSO) INSERT EXITS DSNPOST(module) SEVPRE(SEVPRE01) SEVPOST(SEVPST01) F ACF2,REFRESH(EXITS) NOTE: No other exits are authorized at this time. NOTE: Local changes will be justified in writing with supporting documentation.
Additional Identifiers
Rule ID: SV-136r3_rule
Vulnerability ID: V-136
Group Title: ACF0310
Expert Comments
CCIs
| Number | Definition |
|---|---|
| CCI-000021 |
Enforce dual authorization for organization-defined privileged commands and/or other organization-defined actions. |
| CCI-000366 |
Implement the security configuration settings. |
| CCI-000368 |
Document any deviations from the established configuration settings for organization-defined system components based on organization-defined operational requirements. |
| CCI-000764 |
Uniquely identify and authenticate organizational users and associate that unique identification with processes acting on behalf of those users. |
| CCI-000765 |
Implement multifactor authentication for access to privileged accounts. |
| CCI-001764 |
Prevent program execution in accordance with organization-defined policies, rules of behavior, and/or access agreements regarding software program usage and restrictions; rules authorizing the terms and conditions of software program usage. |