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The passwd command must be configured to prevent the use of dictionary words as passwords.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-75483 | UBTU-16-010270 | SV-90163r1_rule | Medium |
| Description |
|---|
| If the Ubuntu operating system allows the user to select passwords based on dictionary words, this increases the chances of password compromise by increasing the opportunity for successful guesses and brute-force attacks. |
| STIG | Date |
|---|---|
| Canonical Ubuntu 16.04 LTS Security Technical Implementation Guide | 2018-07-18 |
Details
| Check Text ( C-75187r1_chk ) |
|---|
| Verify the "passwd" command uses the common-password settings. Check that the "passwd" command uses the common-password option with the following command: # grep common-password /etc/pam.d/passwd @ include common-password If the command does not return a line, or the line is commented out, this is a finding. |
| Fix Text (F-82111r1_fix) |
|---|
| Configure the Ubuntu operating system to prevent the use of dictionary words for passwords. Edit the file "/etc/pam.d/passwd" and add the following line: @ include common-password |