OL 9 must not allow blank or null passwords.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| high | V-271634 | SRG-OS-000480-GPOS-00227 | OL09-00-001110 | SV-271634r1091614_rule | 2026-02-17 | 1 |
Description
If an account has an empty password, anyone could log in and run commands with the privileges of that account. Accounts with empty passwords should never be used in operational environments.
ℹ️ Check
Verify that OL 9 does not allow null passwords with the following command:
$ grep -i nullok /etc/pam.d/system-auth /etc/pam.d/password-auth
If output is produced, this is a finding.
✔️ Fix
Remove any instances of the "nullok" option in the "/etc/pam.d/password-auth" and "/etc/pam.d/system-auth" files to prevent logons with empty passwords.
Note: Manual changes to the listed file may be overwritten by the "authselect" program.