Ensure minimum days between password changes is 7 or more

Information

The PASS_MIN_DAYS parameter in /etc/login.defs allows an administrator to prevent users from changing their password until a minimum number of days have passed since the last time the user changed their password. It is recommended that PASS_MIN_DAYS parameter be set to 7 or more days.

Solution

Set the PASS_MIN_DAYS parameter to 7 in /etc/login.defs : PASS_MIN_DAYS 7

Modify user parameters for all users with a password set to match:
# chage --mindays 7 <user>

Notes: You can also check this setting in /etc/shadow directly. The 4th field should be 7 or more for all users with a password.

See Also

https://www.cisco.com/c/en/us/td/docs/security/firepower/623/configuration/guide/fpmc-config-guide-v623.html

Item Details

Category: IDENTIFICATION AND AUTHENTICATION

References: 800-53|IA-5(1)(d), CSCv6|16

Plugin: Unix

Control ID: eaa9ebbeb91b8b97e7ab5e560cc02004c47016ae3f72f32a57acc31f1a9f66d9