The SUSE operating system SSH daemon must perform strict mode checking of home directory configuration files.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-235010 | SLES-15-040260 | SV-235010r991589_rule | CCI-000366 | medium |
| Description | ||||
| If other users have access to modify user-specific SSH configuration files, they may be able to log on to the system as another user. | ||||
| STIG | Date | |||
| SUSE Linux Enterprise Server 15 Security Technical Implementation Guide | 2025-05-14 | |||
Details
Check Text (C-235010r991589_chk)
Verify the SUSE operating system SSH daemon performs strict mode checking of home directory configuration files.
Check that the SSH daemon performs strict mode checking of home directory configuration files 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*strictmodes'
StrictModes yes
If "StrictModes" is set to "no", is missing, or the returned line is commented out, this is a finding.
Fix Text (F-38161r619300_fix)
Configure the SUSE operating system SSH daemon performs strict mode checking of home directory configuration files.
Uncomment the "StrictModes" keyword in "/etc/ssh/sshd_config" and set the value to "yes":
StrictModes yes