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The Ubuntu operating system must not have accounts configured with blank or null passwords.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-251503 | UBTU-20-010462 | SV-251503r808506_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 |
|---|---|
| Canonical Ubuntu 20.04 LTS Security Technical Implementation Guide | 2022-09-07 |
Details
| Check Text ( C-54938r808504_chk ) |
|---|
| Check the "/etc/shadow" file for blank passwords with the following command: $ sudo awk -F: '!$2 {print $1}' /etc/shadow If the command returns any results, this is a finding. |
| Fix Text (F-54892r808505_fix) |
|---|
| Configure all accounts on the system to have a password or lock the account with the following commands: Perform a password reset: $ sudo passwd [username] Lock an account: $ sudo passwd -l [username] |