The SUSE operating system must be configured to create or update passwords with a minimum lifetime of 24 hours (1 day).

From SLES 12 Security Technical Implementation Guide

Associated with: CCI-000198

SV-91807r2_rule The SUSE operating system must be configured to create or update passwords with a minimum lifetime of 24 hours (1 day).

Vulnerability discussion

Enforcing a minimum password lifetime helps 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.

Check content

Verify the SUSE operating system to create or update passwords with minimum password age of "1" day or greater. Check that the SUSE operating system enforces 24 hours/1 day as the minimum password age, run the following command: # grep PASS_MIN_DAYS /etc/login.defs PASS_MIN_DAYS 1 If "PASS_MIN_DAYS" does not have a value of "1" or greater, this is a finding.

Fix text

Configure the SUSE operating system to enforce 24 hours/1 day or greater as the minimum password age. Edit the file "/etc/login.defs" and add or correct the following line. Replace [DAYS] with the appropriate amount of days: PASS_MIN_DAYS [DAYS] The DoD requirement is "1" but a greater value is acceptable.

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