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Tanium 7.x Operating System on TanOS Security Technical Implementation Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • SRG-OS-000023

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  • The Tanium Operating System (TanOS) must prohibit password reuse for a minimum of five generations.

    &lt;VulnDiscussion&gt;Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute...
    Rule Medium Severity
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  • SRG-OS-000078

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  • The Tanium Operating System (TanOS) must display the Standard Mandatory DOD Notice and Consent Banner before granting access to the system.

    &lt;VulnDiscussion&gt;Display of a standardized and approved use notification before granting access to the operating system ensures privacy and se...
    Rule Medium Severity
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  • SRG-OS-000027

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  • The Tanium Operating System (TanOS) must limit the number of concurrent sessions to an organization-defined number for all accounts and/or account types.

    &lt;VulnDiscussion&gt;Operating system management includes the ability to control the number of users and user sessions that utilize an operating s...
    Rule Medium Severity
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  • SRG-OS-000046

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  • The Tanium operating system (TanOS) must alert the ISSO and SA (at a minimum) in the event of an audit processing failure.

    &lt;VulnDiscussion&gt;It is critical for the appropriate personnel to be aware if a system is at risk of failing to process audit logs as required....
    Rule Medium Severity
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  • SRG-OS-000075

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  • The Tanium Operating System (TanOS) must enforce 24 hours/1 day as the maximum password lifetime.

    &lt;VulnDiscussion&gt;Enforcing a minimum password lifetime helps to prevent repeated password changes to defeat the password reuse or history enfo...
    Rule Medium Severity
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  • SRG-OS-000076

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  • The Tanium Operating System (TanOS) must enforce a 60-day maximum password lifetime restriction.

    &lt;VulnDiscussion&gt;Any password, no matter how complex, can eventually be cracked. Therefore, passwords need to be changed periodically. One m...
    Rule Medium Severity
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  • SRG-OS-000077

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  • The Tanium Operating System (TanOS) must enforce a minimum 15-character password length.

    &lt;VulnDiscussion&gt;The shorter the password, the lower the number of possible combinations that need to be tested before the password is comprom...
    Rule Medium Severity
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  • SRG-OS-000105

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  • The Tanium Operating System (TanOS) must use multifactor authentication for network access to privileged accounts.

    &lt;VulnDiscussion&gt;Without the use of multifactor authentication, the ease of access to privileged functions is greatly increased. Multifactor...
    Rule High Severity
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  • SRG-OS-000106

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  • The Tanium Operating System (TanOS) must use multifactor authentication for network access to nonprivileged accounts.

    &lt;VulnDiscussion&gt;To assure accountability and prevent unauthenticated access, nonprivileged users must utilize multifactor authentication to p...
    Rule Medium Severity
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  • SRG-OS-000120

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  • 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.

    &lt;VulnDiscussion&gt;To protect the integrity of the authenticator and authentication mechanism used for the cryptographic module used by the netw...
    Rule Medium Severity
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  • SRG-OS-000126

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  • The Tanium operating system (TanOS) must provide an immediate warning to the SA and ISSO (at a minimum) when allocated audit record storage volume reaches 75 percent of repository maximum audit record storage capacity.

    &lt;VulnDiscussion&gt;If security personnel are not notified immediately when storage volume reaches 75 percent, they are unable to plan for audit ...
    Rule Medium Severity
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  • SRG-OS-000344

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

    &lt;VulnDiscussion&gt;Terminating an idle SSH session within a short time period reduces the window of opportunity for unauthorized personnel to ta...
    Rule Medium Severity
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  • SRG-OS-000142

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  • The Tanium Operating System (TanOS) must manage excess capacity, bandwidth, or other redundancy to limit the effects of information flooding types of Denial of Service (DoS) attacks.

    &lt;VulnDiscussion&gt;DoS is a condition that occurs when a resource is not available for legitimate users. When this occurs, the organization eith...
    Rule Medium Severity
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  • SRG-OS-000163

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  • 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.

    &lt;VulnDiscussion&gt;Terminating an idle session within a short time period reduces the window of opportunity for unauthorized personnel to take c...
    Rule Medium Severity
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  • SRG-OS-000185

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  • The Tanium Operating System (TanOS) must use FIPS-validated encryption and hashing algorithms to protect the confidentiality and integrity of operating system configuration and user-generated data stored on the host.

    &lt;VulnDiscussion&gt;Confidentiality and integrity protections are intended to address the confidentiality and integrity of system information at ...
    Rule Medium Severity
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  • SRG-OS-000200

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  • The Tanium Operating System (TanOS) must notify the ISSO and ISSM of failed security verification tests.

    &lt;VulnDiscussion&gt;If personnel are not notified of failed security verification tests, they will not be able to take corrective action and the ...
    Rule Medium Severity
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  • SRG-OS-000228

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  • The publicly accessible Tanium Operating System (TanOS) must display the Standard Mandatory DOD Notice and Consent Banner before granting access to the system.

    &lt;VulnDiscussion&gt;Display of a standardized and approved use notification before granting access to the publicly accessible operating system en...
    Rule Medium Severity
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  • SRG-OS-000274

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  • The Tanium Operating System (TanOS) must notify system administrators and ISSOs when accounts are created.

    &lt;VulnDiscussion&gt;Once an attacker establishes access to a system, the attacker often attempts to create a persistent method of reestablishing ...
    Rule Medium Severity
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  • SRG-OS-000275

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  • The Tanium Operating System (TanOS) must audit and notify system administrators and ISSOs when accounts are modified.

    &lt;VulnDiscussion&gt;Once an attacker establishes access to a system, the attacker often attempts to create a persistent method of reestablishing ...
    Rule Medium Severity
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  • SRG-OS-000277

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  • The Tanium Operating System (TanOS) must notify system administrators and ISSOs when accounts are removed.

    &lt;VulnDiscussion&gt;When operating system accounts are removed, user accessibility is affected. Accounts are utilized for identifying individual ...
    Rule Medium Severity
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  • SRG-OS-000279

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  • Tanium Operating System (TanOS) must automatically terminate a user session after organization-defined conditions or trigger events requiring session disconnect.

    &lt;VulnDiscussion&gt;Automatic session termination addresses the termination of user-initiated logical sessions in contrast to the termination of ...
    Rule Medium Severity
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  • SRG-OS-000304

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  • Tanium must audit and notify system administrators and ISSOs when accounts are enabled.

    &lt;VulnDiscussion&gt;Once an attacker establishes access to a system, the attacker often attempts to create a persistent method of reestablishing ...
    Rule Medium Severity
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  • SRG-OS-000329

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  • Tanium must automatically lock accounts and require them be unlocked by an administrator when three unsuccessful login attempts in 15 minutes are exceeded.

    &lt;VulnDiscussion&gt;By limiting the number of failed login attempts, the risk of unauthorized system access via user password guessing, otherwise...
    Rule Medium Severity
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  • SRG-OS-000342

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  • The Tanium operating system (TanOS) must offload audit records onto a different system or media than the system being audited.

    &lt;VulnDiscussion&gt;Information stored in one location is vulnerable to accidental or incidental deletion or alteration. Offloading is a common...
    Rule Medium Severity
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  • SRG-OS-000343

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  • The Tanium operating system (TanOS) must provide an immediate real-time alert to the SA and ISSO, at a minimum, of all audit failure events requiring real-time alerts.

    &lt;VulnDiscussion&gt;It is critical for the appropriate personnel to be aware if a system is at risk of failing to process audit logs as required....
    Rule Medium Severity
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