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RHEL-10-400150 RHEL 10 must be configured so that the Secure Shell (SSH) server configuration file is group-owned by "root".

DISA STIG library V1R3
All changes in this version
first version loaded CAT II

Maps to AC-3 via CCI-000213

Title

RHEL 10 must be configured so that the Secure Shell (SSH) server configuration file is group-owned by "root".

Control

Verify RHEL 10 is configured so that the "/etc/ssh/sshd_config" file and the contents of "/etc/ssh/sshd_config.d" are group-owned by "root" with the following command: $ sudo find /etc/ssh/sshd_config /etc/ssh/sshd_config.d -exec stat -c "%G %n" {} \; root /etc/ssh/sshd_config root /etc/ssh/sshd_config.d root /etc/ssh/sshd_config.d/50-cloud-init.conf root /etc/ssh/sshd_config.d/50-redhat.conf If the "/etc/ssh/sshd_config" file or "/etc/ssh/sshd_config.d" or any files in the "sshd_config.d" directory do not have a group owner of "root", this is a finding.

Discussion

Service configuration files enable or disable features of their respective services, which if configured incorrectly can lead to insecure and vulnerable configurations. Therefore, service configuration files must be owned by the correct group to prevent unauthorized changes.

Related controls

CCI-000213

Fix

Configure RHEL 10 so that the "/etc/ssh/sshd_config" file and the contents of "/etc/ssh/sshd_config.d" are group-owned by "root" with the following command: $ sudo chgrp root /etc/ssh/sshd_config /etc/ssh/sshd_config.d