STIGQter: STIG Summary: IBM z/OS TSS Security Technical Implementation Guide Version: 8 Release: 2 Benchmark Date: 23 Apr 2021:

The IBM z/OS startup user account for the z/OS UNIX Telnet server must be properly defined.

DISA Rule

SV-224100r561402_rule

Vulnerability Number

V-224100

Group Title

SRG-OS-000080-GPOS-00048

Rule Version

TSS0-UT-000020

Severity

CAT II

CCI(s)

• CCI-000213 - The information system enforces approved authorizations for logical access to information and system resources in accordance with applicable access control policies.

Weight

10

Fix Recommendation

The user account used at the startup of "otelnetd" is specified in the "inetd" configuration file. This account is used to perform the identification and authentication of the user requesting the session. Because the account is only used until user authentication is completed, there is no need for a unique account for this function. The z/OS UNIX kernel account can be used.

Check Contents

From the ISPF Command Shell enter:
omvs
cd /etc
cat inetd.conf

If the "otelnetd" command specifies any user other than "OMVS" or "OMVSKERN", this is a finding.

Vulnerability Number

V-224100

Documentable

False

Rule Version

TSS0-UT-000020

Severity Override Guidance

From the ISPF Command Shell enter:
omvs
cd /etc
cat inetd.conf

If the "otelnetd" command specifies any user other than "OMVS" or "OMVSKERN", this is a finding.

Check Content Reference

M

Target Key

4102

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