SLEM 5 SSH daemon must perform strict mode checking of home directory configuration files.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| medium | V-261341 | SRG-OS-000480-GPOS-00227 | SLEM-05-255080 | SV-261341r996486_rule | 2024-06-04 | 1 |
| 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. |
| ℹ️ Check |
|---|
| Verify SLEM 5 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' /etc/ssh/sshd_config:StrictModes yes If "StrictModes" is not set to "yes", is commented out, missing, or conflicting results are returned, this is a finding. |
| ✔️ Fix |
|---|
| Configure SLEM 5 SSH daemon performs strict mode checking of home directory configuration files. Add or modify the following line in the "/etc/ssh/sshd_config" file: StrictModes yes Restart the SSH daemon in order for the changes to take effect: > sudo systemctl restart sshd.service |