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Users must not be able to change passwords more than once every 24 hours.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-38477 | RHEL-06-000051 | SV-50277r1_rule | Medium |
| Description |
|---|
| Setting the minimum password age protects against users cycling back to a favorite password after satisfying the password reuse requirement. |
| STIG | Date |
|---|---|
| Red Hat Enterprise Linux 6 Security Technical Implementation Guide | 2016-06-05 |
Details
| Check Text ( C-46032r1_chk ) |
|---|
| To check the minimum password age, run the command: $ grep PASS_MIN_DAYS /etc/login.defs The DoD requirement is 1. If it is not set to the required value, this is a finding. |
| Fix Text (F-43422r1_fix) |
|---|
| To specify password minimum age for new accounts, edit the file "/etc/login.defs" and add or correct the following line, replacing [DAYS] appropriately: PASS_MIN_DAYS [DAYS] A value of 1 day is considered sufficient for many environments. The DoD requirement is 1. |