From z/OS ACF2 STIG
Part of ACF0370
Associated with IA controls: DCCS-1, DCCS-2
Associated with: CCI-000366 CCI-002358
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.
Refer to the following report produced by the ACF2 Data Collection: - ACF2CMDS.RPT(ACFGSO) Automated Analysis may require additional analysis Refer to the following report produced by the ACF2 Data Collection: - PDI(ACF0370) If the GSO OPTS record value conforms to the following requirement, this is not a finding. MODE(ABORT) If the GSO OPTS record MODE field is not set to ABORT, this is a finding. Additional analysis may be required to determine whether this finding should be downgraded to a Category II or remain a Category I. Examples of a Category I FINDING where no further analysis is required: MODE(WARN) MODE(LOG) MODE(QUIET) Example of a possible Category I FINDING requiring additional analysis: MODE(RULE,norule,no$mode) norule specifies the action (i.e., QUIET, LOG, WARN, and ABORT) for a data set access request if no rule set is found. no$mode specifies the action (i.e., QUIET, LOG, WARN, and ABORT) for a data set access request if no $MODE control statement is found in a rule set. Possible scenarios justifying a downgrade to a Category II: If some sensitive data sets are not protected by rules sets and norule is set to QUIET, LOG, or WARN, unauthorized access may result for these unprotected data sets. If rule sets for some sensitive data sets have $MODE set to QUIET, LOG, or WARN, unauthorized access may result for the data sets protected by these rule sets. If rule sets for some sensitive data sets have $MODE missing and no$mode is QUIET, LOG, or WARN, unauthorized access may result for the data sets protected by these rule sets.
The IAO will ensure that the OPTS GSO value is set to valid options. Define the global options available to the system. MODE(ABORT) Example: SET C(GSO) INSERT OPTS BLPLOG NOCACHE NOCMDREC CONSOLE(NOROLL) CPUTIME(LOCAL) DATE(MDY) NODDB DFTLID() DFTSTC() INFOLIST(SECURITY, AUDIT) JOBCHK MAXVIO(10) MODE(ABORT) NOTIFY RPTSCOPE SHRDASD STAMPSMF STC TAPEDSN TEMPDSN NOUADS NOVTAMOPEN F ACF2,REFRESH(OPTS)
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