STIGQter: STIG Summary: Oracle Linux 9 Security Technical Implementation Guide Version: 1 Release: 6 Benchmark Date: 01 Jul 2026:

OL 9 must not permit direct logons to the root account using remote access via SSH.

DISA Rule

SV-271708r1092594_rule

Vulnerability Number

V-271708

Group Title

SRG-OS-000109-GPOS-00056

Rule Version

OL09-00-002345

Severity

CAT II

CCI(s)

• CCI-004045 - Require users to be individually authenticated before granting access to the shared accounts or resources.

Weight

10

Fix Recommendation

Configure OL 9 to prevent SSH users from logging on directly as root by adding or modifying the following line in "/etc/ssh/sshd_config" or in a file in "/etc/ssh/sshd_config.d".

PermitRootLogin no

Restart the SSH daemon for the settings to take effect:

$ sudo systemctl restart sshd.service

Check Contents

Verify that OL 9 remote access using SSH prevents users from logging on directly as "root" with the following command:

$ sudo /usr/sbin/sshd -dd 2>&1 | awk '/filename/ {print $4}' | tr -d '\r' | tr '\n' ' ' | xargs sudo grep -iH '^\s*permitrootlogin'
PermitRootLogin no

If the "PermitRootLogin" keyword is set to "yes", is missing, or is commented out, this is a finding.

Vulnerability Number

V-271708

Documentable

False

Rule Version

OL09-00-002345

Severity Override Guidance

Verify that OL 9 remote access using SSH prevents users from logging on directly as "root" with the following command:

$ sudo /usr/sbin/sshd -dd 2>&1 | awk '/filename/ {print $4}' | tr -d '\r' | tr '\n' ' ' | xargs sudo grep -iH '^\s*permitrootlogin'
PermitRootLogin no

If the "PermitRootLogin" keyword is set to "yes", is missing, or is commented out, this is a finding.

Check Content Reference

M

Target Key

5680