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The IBM z/OS Syslog daemon must be properly defined and secured.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-224048TSS0-SL-000030SV-224048r958482_ruleCCI-000764medium
Description
To assure accountability and prevent unauthenticated access, organizational users must be identified and authenticated to prevent potential misuse and compromise of the system. Organizational users include organizational employees or individuals the organization deems to have equivalent status of employees (e.g., contractors). Organizational users (and processes acting on behalf of users) must be uniquely identified and authenticated to all accesses, except for the following: 1) Accesses explicitly identified and documented by the organization. Organizations document specific user actions that can be performed on the information system without identification or authentication; and 2) Accesses that occur through authorized use of group authenticators without individual authentication. Organizations may require unique identification of individuals in group accounts (e.g., shared privilege accounts) or for detailed accountability of individual activity.
STIGDate
IBM z/OS TSS Security Technical Implementation Guide2026-06-15

Related Frameworks

1 mapping across 5 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (5) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

IAC-01.2Authenticate, Authorize and Audit (AAA)
1.00
IAC-02Identification & Authentication for Organizational Users
1.00
IAC-03Identification & Authentication for Non-Organizational Users
1.00
IAC-04Identification & Authentication for Devices
1.00
IAC-05Identification & Authentication for Third-Party Technology Assets, Applications and/or Services (TAAS)
1.00
NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (71) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

AC-10Concurrent Session Control
1.00
AC-11Device Lock
1.00
AC-11(1)Pattern-hiding Displays
1.00
AC-17(10)Authenticate Remote Commands
1.00
AC-2(1)Automated System Account Management
1.00
AC-2(10)Shared and Group Account Credential Change
1.00
AC-2(11)Usage Conditions
1.00
AC-2(2)Automated Temporary and Emergency Account Management
1.00
AC-2(3)Disable Accounts
1.00
AC-2(4)Automated Audit Actions
1.00

+61 more (top 10 by confidence shown)

NIST 800-1710 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (2) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

3.5.1
1.00
3.5.2
1.00
CCI1 mapping
CCI-000764
1.00
NIST CSF 2.00 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (3) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

PR.AA-01
1.00
PR.AA-03
1.00
PR.AA-05
1.00

Who does this work

7 NICE work roles and 5 EC-Council certifications.

This is an inference across published mappings, not a single claim by anyone. This check maps to a control, which maps to a Cybersecurity Framework outcome, which NIST assigns to the work roles below. EC-Council separately maps its certifications to those same roles.

A certification prepares someone for a role. It is not evidence that a holder is qualified, and neither NIST nor EC-Council has stated that any certification here addresses this check.

Work-role assignments published by NIST (NICE Framework Components 2.2.0 and the CSF 2.0 OLIR crosswalk). Certification mappings published by EC-Council.

Details

Check Text (C-224048r958482_chk)

From the ISPF Command Shell enter: TSS LIST(SYSLOGD) SEGMENT(OMVS) If the following guidance is true, this is not a finding. -The Syslog daemon userid is SYSLOGD. -The SYSLOGD userid has the STC facility. -The SYSLOGD userid has UID(0), HOME('/'), and PROGRAM('/bin/sh') specified in the OMVS segment. -The SYSLOGD started proc is assigned the SYSLOGD userid is in the Started Task Table. If Syslog daemon is started from /etc/rc then from the ISPF Command Shell enter: OMVS cd /etc cat rc If Syslog daemon is started from /etc/rc then ensure that the "_BPX_JOBNAME" and "_BPX_USERID" environment variables are assigned a value of SYSLOGD. If the Syslog daemon is started from /etc/rc and the "_BPX_JOBNAME" and "_BPX_USERID" environment variables are not assigned a value of SYSLOGD, this is a finding.

Fix Text (F-25709r869000_fix)

Configure so that the Syslog daemon runs under its own user account. Specifically, it does not share the account defined for the z/OS UNIX kernel. The Syslog daemon userid is SYSLOGD. The SYSLOGD userid has the STC facility. The SYSLOGD userid has UID(0), HOME('/'), and PROGRAM('/bin/sh') specified in the OMVS segment. To set up and use as an MVS Started Proc, the following sample commands are provided: TSS CREATE(SYSLOGD) TYPE(USER) NAME(SYSLOGD) - DEPT(existing-dept) FACILITY(STC) - PASSWORD(password,0) TSS ADD(SYSLOGD) DFLTGRP(stctcpx) GROUP(stctcpx) TSS ADD(SYSLOGD) SOURCE(INTRDR) TSS ADD(SYSLOGD) UID(0) HOME(/) OMVSPGM(/bin/sh) The SYSLOGD started proc is assigned the SYSLOGD userid is in the Started Task Table. TSS ADD(STC) PROCNAME(SYSLOGD) ACID(SYSLOGD) If /etc/rc is used to start the Syslog daemon, ensure that the _BPX_JOBNAME and _BPX_ USERID environment variables are assigned a value of SYSLOGD.