Details

Enforcing a minimum password lifetime helps to prevent repeated password changes to defeat the password reuse or history enforcement requirement. If users are allowed to immediately and continually change their password, the password could be repeatedly changed in a short period of time to defeat the organization’s policy regarding password reuse.

Solution

Configure the operating system to enforce 24 hours/1 day as the minimum password lifetime.

Add the following line in ‘/etc/login.defs’ (or modify the line to have the required value):

PASS_MIN_DAYS 1

Supportive Information

The following resource is also helpful.

• https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_Oracle_Linux_7_V2R5_STIG.zip

This security hardening control applies to the following category of controls within NIST 800-53: Identification and Authentication.This control applies to the following type of system Unix.

References

• 800-53|IA-5(1)(d)
• CAT|II
• CCI|CCI-000198
• Rule-ID|SV-221681r603260_rule
• STIG-ID|OL07-00-010230
• STIG-Legacy|SV-108205
• STIG-Legacy|V-99101
• Vuln-ID|V-221681

Source

• Tenable.com/audits