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 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 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 multifactor authentication for network access to nonprivileged accounts.
To assure accountability and prevent unauthenticated access, nonprivileged users must utilize multifactor authentication to prevent potential misuse and compromise of the system. Multifactor auth...Rule Medium 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 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.
Confidentiality and integrity protections are intended to address the confidentiality and integrity of system information at rest when it is located on a storage device within the network device or...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 -
The Tanium Operating System (TanOS) must notify system administrators (SAs) and information system security officers (ISSOs) when accounts are created.
Once an attacker establishes access to a system, the attacker often attempts to create a persistent method of reestablishing access. One way to accomplish this is for the attacker to create a new a...Rule Medium Severity -
The Tanium Operating System (TanOS) must audit and notify system administrators (SAs) and information system security officers (ISSOs) when accounts are modified.
Once an attacker establishes access to a system, the attacker often attempts to create a persistent method of reestablishing access. One way to accomplish this is for the attacker to modify an exis...Rule Medium Severity -
Tanium must audit and notify system administrators (SAs) and information system security officers (ISSOs) when accounts are enabled.
Once an attacker establishes access to a system, the attacker often attempts to create a persistent method of reestablishing access. One way to accomplish this is for the attacker to enable an exis...Rule Medium Severity -
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.
If security personnel are not notified immediately when storage volume reaches 75 percent, they are unable to plan for audit record storage capacity expansion.Rule Medium Severity -
The Tanium operating system (TanOS) must, for networked systems, compare internal information system clocks at least every 24 hours with a server synchronized to one of the redundant United States Naval Observatory (USNO) time servers or a time server designated for the appropriate DOD network (NIPRNet/SIPRNet), and/or the Global Positioning System (GPS).
Inaccurate time stamps make it more difficult to correlate events and can lead to an inaccurate analysis. Determining the correct time a particular event occurred on a system is critical when condu...Rule Medium Severity -
The Tanium Operating System (TanOS) must be configured to synchronize internal information system clocks with the primary and secondary time sources located in different geographic regions using redundant authoritative time sources.
The loss of connectivity to a particular authoritative time source will result in the loss of time synchronization (free-run mode) and increasingly inaccurate time stamps on audit events and other ...Rule Medium Severity -
The Tanium operating system (TanOS) must perform data integrity verification on the name/address resolution responses the system receives from authoritative sources.
If data origin authentication and data integrity verification is not performed, the resultant response could be forged, it may have come from a poisoned cache, the packets could have been intercept...Rule Medium Severity -
The Tanium operating system (TanOS) must perform data origin verification authentication on the name/address resolution responses the system receives from authoritative sources.
If data origin authentication and data integrity verification is not performed, the resultant response could be forged, it may have come from a poisoned cache, the packets could have been intercept...Rule Medium Severity -
The Tanium operating system (TanOS) must install security-relevant firmware updates within the time period directed by an authoritative source (e.g. IAVM, CTOs, DTMs, and STIGs).
Security flaws with firmware are discovered daily. Vendors are constantly updating and patching their products to address newly discovered security vulnerabilities. Organizations (including any con...Rule Medium Severity -
The Tanium Operating System (TanOS) must use a FIPS-validated cryptographic module to provision digital signatures.
FIPS 140-2 precludes the use of invalidated cryptography for the cryptographic protection of sensitive or valuable data within federal systems. Un-validated cryptography is viewed by NIST as provid...Rule High Severity -
The Tanium operating system (TanOS) must offload audit records onto a different system or media than the system being audited.
Information stored in one location is vulnerable to accidental or incidental deletion or alteration. Offloading is a common process in information systems with limited audit storage capacity. Sa...Rule Medium Severity -
SRG-OS-000023
Group
Node 2
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