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RHEL-09-411035 RHEL 9 system accounts must not have an interactive login shell.

DISA STIG library V2R10
All changes in this version
first version loaded CAT II

Maps to CM-6 via CCI-000366

Title

RHEL 9 system accounts must not have an interactive login shell.

Control

Verify that RHEL 9 system accounts do not have an interactive login shell. Run the following command to list any system account (UID 0 && $3 < 1000) && $1 !~ /^(halt|sync|shutdown)$/ && $7 !~ /(nologin|false)$/) {print $1 ":" $3 ":" $7}' /etc/passwd If the command returns any output, this is a finding.

Discussion

Ensuring shells are not given to system accounts upon login makes it more difficult for attackers to make use of system accounts.

Related controls

CCI-000366

Fix

Configure RHEL 9 so that all noninteractive accounts on the system do not have an interactive shell assigned to them. If the system account needs a shell assigned for mission operations, document the need with the information system security officer (ISSO). Run the following command to disable the interactive shell for a specific noninteractive user account: $ sudo usermod --shell /usr/sbin/nologin