The GSO UNIXOPTS record does not specify proper security settings for DFTGROUP and DFTUSER control options.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-6993	ZUSSA050	SV-7296r2_rule	DCCS-1 DCCS-2 ECCD-1 ECCD-2	Medium

Description
Parameter settings in the ACP impact the security level of z/OS UNIX.

STIG	Date
z/OS ACF2 STIG	2015-06-24

Details

Check Text ( C-20759r1_chk )
a) Refer to the following report produced by the ACF2 Data Collection: - ACF2CMDS.RPT(ACFGSO) - Classification of System Automated Analysis Refer to the following report produced by the ACF2 Data Collection: - PDI(ZUSSA050) b) If system is classified or does not use the FTP socket application the UNIXOPTS record must specify DFTGROUP() and DFTUSER(), there is NO FINDING. c) If the system is a non classified system, running the FTP socket application and DFTGROUP and DFTUSER control options specify a logon id and GROUP profile, there is NO FINDING. d) If (b) or (c) above is untrue, this is a FINDING.

Check Text ( C-20759r1_chk )

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

- ACF2CMDS.RPT(ACFGSO)
- Classification of System

Automated Analysis
Refer to the following report produced by the ACF2 Data Collection:

- PDI(ZUSSA050)

b) If system is classified or does not use the FTP socket application the UNIXOPTS record must specify DFTGROUP() and DFTUSER(), there is NO FINDING.

c) If the system is a non classified system, running the FTP socket application and DFTGROUP and DFTUSER control options specify a logon id and GROUP profile, there is NO FINDING.

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

Fix Text (F-18711r1_fix)
The IAO will ensure that UINIXOPTS record does not specify DFTGROUP and DFTUSER fields for classified systems and systems not using FTP. If system is classified or does not use the FTP socket application the UNIXOPTS record must specify DFTGROUP() and DFTUSER(). If the system is a non classified system, running the FTP socket application and DFTGROUP and DFTUSER control options specify a logon id and GROUP profile this is the proper security setting. Example: SET C(GSO) LIST UNIXOPTS CHOWNRES DFTGROUP(OMVSDGRP) DFTUSER(OMVSUSER) NODIRACC NODIRSRCH NOFSOBJ NOFSSEC NOGOSETGID NOHFSACL NOHFSSEC NOIPCOBJ NGROUPS(300) NOPROCACT NOPROCESS

Fix Text (F-18711r1_fix)

The IAO will ensure that UINIXOPTS record does not specify DFTGROUP and DFTUSER fields for classified systems and systems not using FTP.

If system is classified or does not use the FTP socket application the UNIXOPTS record must specify DFTGROUP() and DFTUSER().

If the system is a non classified system, running the FTP socket application and DFTGROUP and DFTUSER control options specify a logon id and GROUP profile this is the proper security setting.

Example:

SET C(GSO)
LIST UNIXOPTS

CHOWNRES DFTGROUP(OMVSDGRP) DFTUSER(OMVSUSER) NODIRACC
NODIRSRCH NOFSOBJ NOFSSEC NOGOSETGID NOHFSACL NOHFSSEC
NOIPCOBJ NGROUPS(300) NOPROCACT NOPROCESS