SV-248613r1015039_rule
V-248613
SRG-OS-000109-GPOS-00056
OL08-00-010550
CAT II
10
Configure OL 8 to stop users from logging on remotely as the "root" user via SSH.
Edit the appropriate "/etc/ssh/sshd_config" file to uncomment or add the line for the "PermitRootLogin" keyword and set its value to "no":
PermitRootLogin no
The SSH daemon must be restarted for the changes to take effect. To restart the SSH daemon, run the following command:
$ sudo systemctl restart sshd.service
Verify 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.
If conflicting results are returned, this is a finding.
V-248613
False
OL08-00-010550
Verify 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.
If conflicting results are returned, this is a finding.
M
5416