Nutanix AOS must automatically remove or disable temporary user accounts after 72 hours.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-254126	NUTX-OS-000100	SV-254126r846466_rule		Low

Description
If temporary user accounts remain active when no longer needed or for an excessive period, these accounts may be used to gain unauthorized access. To mitigate this risk, automated termination of all temporary accounts must be set upon account creation. Temporary accounts are established as part of normal account activation procedures when there is a need for short-term accounts without the demand for immediacy in account activation. If temporary accounts are used, the operating system must be configured to automatically terminate these types of accounts after a DoD-defined time period of 72 hours. To address access requirements, many operating systems may be integrated with enterprise-level authentication/access mechanisms that meet or exceed access control policy requirements. Satisfies: SRG-OS-000002-GPOS-00002, SRG-OS-000123-GPOS-00064

Description

If temporary user accounts remain active when no longer needed or for an excessive period, these accounts may be used to gain unauthorized access. To mitigate this risk, automated termination of all temporary accounts must be set upon account creation. Temporary accounts are established as part of normal account activation procedures when there is a need for short-term accounts without the demand for immediacy in account activation. If temporary accounts are used, the operating system must be configured to automatically terminate these types of accounts after a DoD-defined time period of 72 hours. To address access requirements, many operating systems may be integrated with enterprise-level authentication/access mechanisms that meet or exceed access control policy requirements. Satisfies: SRG-OS-000002-GPOS-00002, SRG-OS-000123-GPOS-00064

STIG	Date
Nutanix AOS 5.20.x OS Security Technical Implementation Guide	2022-08-24

Details

Check Text ( C-57611r846464_chk )
Nutanix AOS does not natively support temporary user accounts, named or otherwise. However, if temporary accounts are created, they must be configured to automatically terminate these types of accounts after a DoD-defined time period of 72 hours. Verify that temporary accounts have been provisioned with an expiration date of 72 hours. For every existing temporary account, run the following command to obtain its account expiration information. $ sudo chage -l system_account_name Verify each of these accounts has an expiration date set within 72 hours. If any temporary accounts have no expiration date set or do not expire within 72 hours, this is a finding.

Check Text ( C-57611r846464_chk )

Nutanix AOS does not natively support temporary user accounts, named or otherwise. However, if temporary accounts are created, they must be configured to automatically terminate these types of accounts after a DoD-defined time period of 72 hours.

Verify that temporary accounts have been provisioned with an expiration date of 72 hours.

For every existing temporary account, run the following command to obtain its account expiration information.

$ sudo chage -l system_account_name

Verify each of these accounts has an expiration date set within 72 hours.

If any temporary accounts have no expiration date set or do not expire within 72 hours, this is a finding.

Fix Text (F-57562r846465_fix)
Configure any temporary account(s) that have been created with an expiration date exceeding the DoD-defined time period of 72 hours by running the following command: sudo chage -E `date -d "+3 days" +%Y-%m-%d` system_account_name