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RHEL 8 must not allow blank or null passwords in the password-auth file.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-244541 | RHEL-08-020332 | SV-244541r743872_rule | High |
| Description |
|---|
| If an account has an empty password, anyone could log on and run commands with the privileges of that account. Accounts with empty passwords should never be used in operational environments. |
| STIG | Date |
|---|---|
| Red Hat Enterprise Linux 8 Security Technical Implementation Guide | 2022-12-06 |
Details
| Check Text ( C-47816r743870_chk ) |
|---|
| To verify that null passwords cannot be used, run the following command: $ sudo grep -i nullok /etc/pam.d/password-auth If output is produced, this is a finding. |
| Fix Text (F-47773r743871_fix) |
|---|
| Remove any instances of the "nullok" option in the "/etc/pam.d/password-auth" file to prevent logons with empty passwords. Note: Manual changes to the listed file may be overwritten by the "authselect" program. |