STIGQter STIGQter: STIG Summary: z/OS ACF2 STIG Version: 6 Release: 43 Benchmark Date: 24 Jan 2020: Emergency LOGONIDs must be properly defined.

DISA Rule

SV-168r3_rule

Vulnerability Number

V-168

Group Title

ACF0690

Rule Version

ACF0690

Severity

CAT II

CCI(s)

Weight

10

Fix Recommendation

Ensure that Emergency Logonids use these fields to enforce restrictions for Emergency Userids.

Two classes of emergency userids may exist. The following privileges and specifications will be used for these logonids:

Note: Only the emergency logonid with the security administration logonid attributes is required.

(1) For emergency IDs with the ability to access and update all system data sets, but which do not have security administration privileges:

NOFSRETAIN
JCL
JOB
MONITOR
NON CNCL (Will force logging of all activity.)
TSO
TSOPROC(xxxxxxxx)
TSOACCT(none)

Example:

SET LID
INSERT logonid NOFSRETAIN JCL JOB MONITOR NON-CNCL TSO TSOPRC(xxxxxxxx) TSOACCT(none)

(2) For emergency IDs with security administration privileges, but which cannot access and update system data sets:

ACCOUNT
NOFSRETAIN
JCL
JOB
MONITOR
NONON CNCL
RULEVLD
RSRCVLD
SECURITY
TSO
TSOPROC(xxxxxxxx)
TSOACCT(none)

Example:

SET LID
INSERT logonid ACCOUNT NOFSRETAIN JCL JOB MONITOR RULEVLD RSRCVLD NONON-CNCL SECURITY TSO TSOPRC(xxxxxxxx) TSOACCT(none)

Check Contents

a) Refer to the following report produced by the ACF2 Data Collection:

- ACF2CMDS.RPT(LOGONIDS)

Refer to the following report produced by the z/OS Data Collection:

- EXAM.RPT(TSOUADS)

b) At a minimum an emergency logonid will exists with the security administration attributes specified in accordance with the following requirements:

For emergency IDs with security administration privileges, but which cannot access and update system data sets:

ACCOUNT

JCL
JOB
MONITOR
NONON CNCL
RULEVLD
RSRCVLD
SECURITY
TSO
TSOPROC(xxxxxxxx)
TSOACCT(none)

An additional class of userids can exist to perform all operating system functions except ACP administration.

These emergency logonid / logonid(s) will have ability to access and update all system data sets, but will not have security administration privileges. See the following requirements:


JCL
JOB
MONITOR
NON CNCL (Will force logging of all activity.)
TSO
TSOPROC(xxxxxxxx)
TSOACCT(none)

All emergency logonid / logonid(s) are to be implemented with logging to provide an audit trail of their activities.

All emergency logonid / logonid(s) are to be maintained in both the ACP and SYS1.UADS to ensure they are available in the event that the ACP is not functional.

All emergency logonid / logonid(s) will have distinct, different passwords in SYS1.UADS and in the ACP, and the site is to establish procedures to ensure that the passwords differ. The password for any ID in SYS1.UADS is never to match the password for the same ID in the ACP.

All emergency logonid / logonid(s) will have documented procedures to provide a mechanism for the use of the IDs. Their release for use is to be logged, and the log is to be maintained by the ISSO. When an emergency logonid is released for use, its password is to be reset by the ISSO within 12 hours.

c) If all items in (b) are true, there is NO FINDING.

d) If any item in (b) is untrue, this is a FINDING.

Vulnerability Number

V-168

Documentable

False

Rule Version

ACF0690

Severity Override Guidance

a) Refer to the following report produced by the ACF2 Data Collection:

- ACF2CMDS.RPT(LOGONIDS)

Refer to the following report produced by the z/OS Data Collection:

- EXAM.RPT(TSOUADS)

b) At a minimum an emergency logonid will exists with the security administration attributes specified in accordance with the following requirements:

For emergency IDs with security administration privileges, but which cannot access and update system data sets:

ACCOUNT

JCL
JOB
MONITOR
NONON CNCL
RULEVLD
RSRCVLD
SECURITY
TSO
TSOPROC(xxxxxxxx)
TSOACCT(none)

An additional class of userids can exist to perform all operating system functions except ACP administration.

These emergency logonid / logonid(s) will have ability to access and update all system data sets, but will not have security administration privileges. See the following requirements:


JCL
JOB
MONITOR
NON CNCL (Will force logging of all activity.)
TSO
TSOPROC(xxxxxxxx)
TSOACCT(none)

All emergency logonid / logonid(s) are to be implemented with logging to provide an audit trail of their activities.

All emergency logonid / logonid(s) are to be maintained in both the ACP and SYS1.UADS to ensure they are available in the event that the ACP is not functional.

All emergency logonid / logonid(s) will have distinct, different passwords in SYS1.UADS and in the ACP, and the site is to establish procedures to ensure that the passwords differ. The password for any ID in SYS1.UADS is never to match the password for the same ID in the ACP.

All emergency logonid / logonid(s) will have documented procedures to provide a mechanism for the use of the IDs. Their release for use is to be logged, and the log is to be maintained by the ISSO. When an emergency logonid is released for use, its password is to be reset by the ISSO within 12 hours.

c) If all items in (b) are true, there is NO FINDING.

d) If any item in (b) is untrue, this is a FINDING.

Check Content Reference

M

Responsibility

Information Assurance Officer

Target Key

198

Comments