STIGQter STIGQter: STIG Summary: z/OS ACF2 STIG Version: 6 Release: 43 Benchmark Date: 24 Jan 2020: z/OS UNIX resources must be protected in accordance with security requirements.

DISA Rule

SV-7273r3_rule

Vulnerability Number

V-6970

Group Title

ZUSS0022

Rule Version

ZUSS0022

Severity

CAT I

CCI(s)

Weight

10

Fix Recommendation

The Systems Programmer and IAO will ensure that BPX. SRV.userid resources are properly protected and access is restricted to appropriate system tasks or systems programming personnel.

SURROGAT class BPX resources are used in conjunction with server applications that are performing tasks on behalf of client users that may not supply an authenticator to the server. This can be the case when clients are otherwise validated or when the requested service is performed from userids representing groups.

The default access for each BPX.SRV.userid resource must be no access. Access can be permitted only to system software processes that act as servers under OS/390 UNIX (e.g., web servers).

Example:

SET R(SUR)
$KEY(BPX) TYPE(SUR)
SRV.INTERNAL UID(FJB****STC******IMWEBSRV) SERVICE(READ) LOG
SRV.PRIVATE UID(FJB****STC******IMWEBSRV) SERVICE(READ) LOG
SRV.PUBLIC UID(FJB****STC******IMWEBSRV) SERVICE(READ) LOG
SRV.WEBADM UID(FJB****STC******IMWEBSRV) SERVICE(READ) LOG
- UID(*) PREVENT

Check Contents

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

- SENSITVE.RPT(SURROGAT)
- ACF2CMDS.RPT(RESOURCE) – Alternate report

Automated Analysis
Refer to the following report produced by the Data Set and Resource Data Collection:

- PDI(ZUSS0022)

b) If the ACF2 rules for all BPX.SRV.user TYPE(SUR) resources specify a default access of NONE, there is NO FINDING.

c) If the ACF2 rules for all BPX.SRV.user TYPE(SUR) resources restrict access to system software processes (e.g., web servers) that act as servers under z/OS UNIX, there is NO FINDING.

d) If (b) or (c) above is untrue, this is a FINDING.

Vulnerability Number

V-6970

Documentable

False

Rule Version

ZUSS0022

Severity Override Guidance

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

- SENSITVE.RPT(SURROGAT)
- ACF2CMDS.RPT(RESOURCE) – Alternate report

Automated Analysis
Refer to the following report produced by the Data Set and Resource Data Collection:

- PDI(ZUSS0022)

b) If the ACF2 rules for all BPX.SRV.user TYPE(SUR) resources specify a default access of NONE, there is NO FINDING.

c) If the ACF2 rules for all BPX.SRV.user TYPE(SUR) resources restrict access to system software processes (e.g., web servers) that act as servers under z/OS UNIX, there is NO FINDING.

d) If (b) or (c) above is untrue, this is a FINDING.

Check Content Reference

M

Responsibility

Systems Programmer

Target Key

198

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