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The system must not have accounts configured with blank or null passwords.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-71937 | RHEL-07-010290 | SV-86561r1_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 7 Security Technical Implementation Guide | 2017-07-08 |
Details
| Check Text ( C-72169r1_chk ) |
|---|
| To verify that null passwords cannot be used, run the following command: # grep nullok /etc/pam.d/system-auth-ac If this produces any output, it may be possible to log on with accounts with empty passwords. If null passwords can be used, this is a finding. |
| Fix Text (F-78289r1_fix) |
|---|
| If an account is configured for password authentication but does not have an assigned password, it may be possible to log on to the account without authenticating. Remove any instances of the "nullok" option in "/etc/pam.d/system-auth-ac" to prevent logons with empty passwords and run the "authconfig" command. |