The SUSE operating system must not allow users to override SSH environment variables.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-217269 | SLES-12-030151 | SV-217269r991591_rule | CCI-000366 | medium |
| Description | ||||
| SSH environment options potentially allow users to bypass access restriction in some configurations. | ||||
| STIG | Date | |||
| SUSE Linux Enterprise Server 12 Security Technical Implementation Guide | 2025-05-14 | |||
Details
Check Text (C-217269r991591_chk)
Verify the SUSE operating system disables unattended via SSH.
Check that unattended logon via SSH is disabled with the following command:
# sudo grep -i "permituserenvironment" /etc/ssh/sshd_config
PermitUserEnvironment no
If the "PermitUserEnvironment" keyword is not set to "no", is missing completely, or is commented out, this is a finding.
Fix Text (F-18495r369964_fix)
Configure the SUSE operating system disables unattended logon via SSH.
Add or edit the following lines in the "/etc/ssh/sshd_config" file:
PermitUserEnvironment no