AlmaLinux OS 9 must require authentication to access single-user mode.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| medium | V-269139 | SRG-OS-000080-GPOS-00048 | ALMA-09-006510 | SV-269139r1050021_rule | 2025-02-20 | 1 |
| Description |
|---|
| This requirement prevents attackers with physical access from easily bypassing security on the machine and gaining root access. Such accesses are further prevented by configuring the bootloader password. |
| ℹ️ Check |
|---|
| Verify that AlmaLinux OS 9 requires authentication for single-user mode with the following command: $ grep -E 'ExecStart.*sulogin' /usr/lib/systemd/system/rescue.service ExecStart=-/usr/lib/systemd/systemd-sulogin-shell rescue If this line is not returned or is commented out, this is a finding. |
| ✔️ Fix |
|---|
| Configure AlmaLinux OS 9 to require authentication for single-user mode. Add or modify the following line in the "/usr/lib/systemd/system/rescue.service" file: ExecStart=-/usr/lib/systemd/systemd-sulogin-shell rescue "sudo systemctl edit rescue.service" can also be used to create a "/etc/systemd/system/rescue.service.d/override.conf" file. |