Tanium Computer Groups must be used to restrict console users from effecting changes to unauthorized computers.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-253817	TANS-CN-000004	SV-253817r842479_rule		Medium

Description
Computer Groups allow a site running Tanium to assign responsibility of specific Computer Groups to specific Tanium console users. By doing so, a desktop administrator, for example, will not have the ability to enforce an action against a high-visibility server. For large sites, it is crucial to have the Computer Groups. While a smaller site might not seem to require Computer Groups, creating them provides for a cleaner implementation. All sites will be required to have some kind of Computer Groups configured other than the default "All Computers".

Description

Computer Groups allow a site running Tanium to assign responsibility of specific Computer Groups to specific Tanium console users. By doing so, a desktop administrator, for example, will not have the ability to enforce an action against a high-visibility server. For large sites, it is crucial to have the Computer Groups. While a smaller site might not seem to require Computer Groups, creating them provides for a cleaner implementation. All sites will be required to have some kind of Computer Groups configured other than the default "All Computers".

STIG	Date
Tanium 7.x Security Technical Implementation Guide	2022-08-24

Details

Check Text ( C-57269r842477_chk )
1. Using a web browser on a system that has connectivity to the Tanium Application, access the Tanium Application web user interface (UI) and log on with multifactor authentication. 2. Click "Administration" on the top navigation banner. 3. Select the "Computer Groups" tab. 4. Under the "Name" column, verify organization-specific computer groups match organization-defined list in the system security plan (SSP). If site- or organization-specific computer groups do not match or exist, this is a finding.

Check Text ( C-57269r842477_chk )

1. Using a web browser on a system that has connectivity to the Tanium Application, access the Tanium Application web user interface (UI) and log on with multifactor authentication.

2. Click "Administration" on the top navigation banner.

3. Select the "Computer Groups" tab.

4. Under the "Name" column, verify organization-specific computer groups match organization-defined list in the system security plan (SSP).

If site- or organization-specific computer groups do not match or exist, this is a finding.

Fix Text (F-57220r842478_fix)
1. Using a web browser on a system that has connectivity to the Tanium Server, access the Tanium Server web UI and log on with multifactor authentication. 2. Click "Administration" on the top navigation banner. 3. Select the "Computer Groups" tab. 4. Configure specific Computer Groups to facilitate the management of computers by authorized individuals for those computers. Note: Tanium offers two ways to define computer groups. Refer to the following documentation for explanation: https://docs.tanium.com/platform_user/platform_user/console_computer_groups.html#Computer_Group_types

Fix Text (F-57220r842478_fix)

1. Using a web browser on a system that has connectivity to the Tanium Server, access the Tanium Server web UI and log on with multifactor authentication.

2. Click "Administration" on the top navigation banner.

3. Select the "Computer Groups" tab.

4. Configure specific Computer Groups to facilitate the management of computers by authorized individuals for those computers.

Note: Tanium offers two ways to define computer groups. Refer to the following documentation for explanation: https://docs.tanium.com/platform_user/platform_user/console_computer_groups.html#Computer_Group_types