SLEM 5 must not allow unattended or automatic logon via SSH.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-261330 | SLEM-05-255025 | SV-261330r996457_rule | CCI-000366 | high |
| Description | ||||
| Failure to restrict system access via SSH to authenticated users negatively impacts SLEM 5 security. | ||||
| STIG | Date | |||
| SUSE Linux Enterprise Micro (SLEM) 5 Security Technical Implementation Guide | 2025-05-08 | |||
Details
Check Text (C-261330r996457_chk)
Verify SLEM 5 disables unattended or automatic logon via SSH with the following command:
> sudo /usr/sbin/sshd -dd 2>&1 | awk '/filename/ {print $4}' | tr -d '\r' | tr '\n' ' ' | xargs sudo grep -iEH '^\s*(permit(.*?)(passwords|environment))'
/etc/ssh/sshd_config:PermitEmptyPasswords no
/etc/ssh/sshd_config:PermitUserEnvironment no
If "PermitEmptyPasswords" or "PermitUserEnvironment" keywords are not set to "no", are commented out, or are missing completely, this is a finding.
Fix Text (F-64967r995856_fix)
Configure SLEM 5 disables unattended or automatic logon via SSH.
Add or modify the following lines in the "/etc/ssh/sshd_config" file:
PermitEmptyPasswords no
PermitUserEnvironment no