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The SSH daemon must not allow authentication using an empty password.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| RHEL-06-000239 | RHEL-06-000239 | RHEL-06-000239_rule | High |
| Description |
|---|
| Configuring this setting for the SSH daemon provides additional assurance that remote login via SSH will require a password, even in the event of misconfiguration elsewhere. |
| STIG | Date |
|---|---|
| Red Hat Enterprise Linux 6 Security Technical Implementation Guide | 2013-02-05 |
Details
| Check Text ( C-RHEL-06-000239_chk ) |
|---|
| To determine how the SSH daemon's "PermitEmptyPasswords" option is set, run the following command: # grep -i PermitEmptyPasswords /etc/ssh/sshd_config If no line, a commented line, or a line indicating the value "no" is returned, then the required value is set. If the required value is not set, this is a finding. |
| Fix Text (F-RHEL-06-000239_fix) |
|---|
| To explicitly disallow remote login from accounts with empty passwords, add or correct the following line: PermitEmptyPasswords no Any accounts with empty passwords should be disabled immediately, and PAM configuration should prevent users from being able to assign themselves empty passwords. |