The Tanium Operating System (TanOS) must terminate all sessions and network connections when nonlocal maintenance is completed.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-254850	TANS-OS-000410	SV-254850r866091_rule		Medium

Description
Terminating an idle SSH session within a short time period reduces the window of opportunity for unauthorized personnel to take control of a management session enabled on the console or console port that has been left unattended. In addition, quickly terminating an idle SSH session will also free up resources committed by the managed network element. Terminating network connections associated with communications sessions includes, for example, de-allocating associated TCP/IP address/port pairs at the operating system level and de-allocating networking assignments at the application level if multiple application sessions are using a single operating system-level network connection. This does not mean that the operating system terminates all sessions or network access; it only ends the inactive session and releases the resources associated with that session.

Description

Terminating an idle SSH session within a short time period reduces the window of opportunity for unauthorized personnel to take control of a management session enabled on the console or console port that has been left unattended. In addition, quickly terminating an idle SSH session will also free up resources committed by the managed network element. Terminating network connections associated with communications sessions includes, for example, de-allocating associated TCP/IP address/port pairs at the operating system level and de-allocating networking assignments at the application level if multiple application sessions are using a single operating system-level network connection. This does not mean that the operating system terminates all sessions or network access; it only ends the inactive session and releases the resources associated with that session.

STIG	Date
Tanium 7.x Operating System on TanOS Security Technical Implementation Guide	2022-10-31

Details

Check Text ( C-58463r866089_chk )
1. Access the Tanium Server interactively. 2. Log on to the TanOS server with the tanadmin role. 3. Press "A" for "Appliance Configuration Menu," and then press "Enter". 4. Press "A" for "Security," and then press "Enter". 5. Press "X" for "Advanced Security," and then press "Enter". If the "Menu Timeout" setting is "-", this is a finding.

Fix Text (F-58407r866090_fix)
1. Access the Tanium Server interactively. 2. Log on to the TanOS server with the tanadmin role. 3. Press "A" for "Appliance Configuration Menu," and then press "Enter". 4. Press "A" for "Security," and then press "Enter". 5. Press "X" for "Advanced Security," and then press "Enter". 6. Press "5" for "Set Menu Timeout," and then press "Enter". 7. Enter the desired SSH timeout in seconds, and then press "Enter".

Fix Text (F-58407r866090_fix)

1. Access the Tanium Server interactively.

2. Log on to the TanOS server with the tanadmin role.

3. Press "A" for "Appliance Configuration Menu," and then press "Enter".

4. Press "A" for "Security," and then press "Enter".

5. Press "X" for "Advanced Security," and then press "Enter".

6. Press "5" for "Set Menu Timeout," and then press "Enter".

7. Enter the desired SSH timeout in seconds, and then press "Enter".