Tanium 7.x Operating System on TanOS Security Technical Implementation Guide
Rules, Groups, and Values defined within the XCCDF Benchmark
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SRG-OS-000021
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The Tanium Operating System (TanOS) must enforce the limit of three consecutive invalid logon attempts by a user during a 15 minute time period.
By limiting the number of failed login attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute forcing, is reduced. Limits are imposed by locking the a...Rule Medium Severity -
The Tanium Operating System (TanOS) must display the Standard Mandatory DOD Notice and Consent Banner before granting access to the system.
Display of a standardized and approved use notification before granting access to the operating system ensures privacy and security notification verbiage used is consistent with applicable federal ...Rule Medium Severity -
The Tanium operating system (TanOS) must alert the ISSO and SA (at a minimum) in the event of an audit processing failure.
It is critical for the appropriate personnel to be aware if a system is at risk of failing to process audit logs as required. Without this notification, the security personnel may be unaware of an ...Rule Medium Severity -
The Tanium Operating System (TanOS) must enforce a minimum 15-character password length.
The shorter the password, the lower the number of possible combinations that need to be tested before the password is compromised. Password complexity, or strength, is a measure of the effectivene...Rule Medium Severity -
The Tanium Operating System (TanOS) must use multifactor authentication for network access to privileged accounts.
Without the use of multifactor authentication, the ease of access to privileged functions is greatly increased. Multifactor authentication requires using two or more factors to achieve authentica...Rule High Severity -
The Tanium Operating System (TanOS) must use FIPS-validated SHA-2 or higher hash function to protect the integrity of hash message authentication code (HMAC), Key Derivation Functions (KDFs), Random Bit Generation, and hash-only applications.
To protect the integrity of the authenticator and authentication mechanism used for the cryptographic module used by the network device, the application, operating system, or protocol must be confi...Rule Medium Severity -
The Tanium Operating System (TanOS) must terminate all sessions and network connections when nonlocal maintenance is completed.
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 por...Rule Medium Severity -
Tanium Operating System (TanOS) must terminate all network connections associated with a communications session at the end of the session, or as follows: For in-band management sessions (privileged sessions), the session must be terminated after 10 minutes of inactivity; for user sessions (nonprivileged session), the session must be terminated after 15 minutes of inactivity, except to fulfill documented and validated mission requirements.
Terminating an idle 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 th...Rule Medium Severity -
The Tanium Operating System (TanOS) must notify the ISSO and ISSM of failed security verification tests.
If personnel are not notified of failed security verification tests, they will not be able to take corrective action and the unsecure condition(s) will remain. Security function is defined as the h...Rule Medium Severity
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