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III - Administrative Classified

Rules and Groups employed by this XCCDF Profile

  • SRG-APP-000295-AU-000190

    <GroupDescription></GroupDescription>
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  • Splunk Enterprise idle session timeout must be set to not exceed 15 minutes.

    &lt;VulnDiscussion&gt;Automatic session termination after a period of inactivity addresses the potential for a malicious actor to exploit the unatt...
    Rule Medium Severity
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  • SRG-APP-000291-AU-000200

    <GroupDescription></GroupDescription>
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  • Splunk Enterprise must notify the system administrator (SA) and information system security officer (ISSO) when account events are received (creation, deletion, modification, or disabling).

    &lt;VulnDiscussion&gt;Once an attacker establishes access to an application, the attacker often attempts to create a persistent method of re-establ...
    Rule Low Severity
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  • SRG-APP-000065-AU-000240

    <GroupDescription></GroupDescription>
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  • Splunk Enterprise must enforce the limit of three consecutive invalid logon attempts by a user during a 15-minute time period.

    &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-APP-000345-AU-000400

    <GroupDescription></GroupDescription>
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  • Splunk Enterprise must automatically lock the account until the locked account is released 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-APP-000068-AU-000035

    <GroupDescription></GroupDescription>
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  • Splunk Enterprise must display the Standard Mandatory DOD Notice and Consent Banner before granting access to the server.

    &lt;VulnDiscussion&gt;Display of the DOD-approved use notification before granting access to the application ensures privacy and security notificat...
    Rule Low Severity
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  • SRG-APP-000080-AU-000010

    <GroupDescription></GroupDescription>
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  • Splunk Enterprise must be configured to protect the log data stored in the indexes from alteration.

    &lt;VulnDiscussion&gt;Without non-repudiation, it is impossible to positively attribute an action to an individual (or process acting on behalf of ...
    Rule Medium Severity
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  • SRG-APP-000086-AU-000020

    <GroupDescription></GroupDescription>
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  • Splunk Enterprise must be configured to aggregate log records from organization-defined devices and hosts within its scope of coverage.

    &lt;VulnDiscussion&gt;If the application is not configured to collate records based on the time when the events occurred, the ability to perform fo...
    Rule Low Severity
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  • SRG-APP-000086-AU-000390

    <GroupDescription></GroupDescription>
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  • In a distributed environment, Splunk Enterprise indexers must be configured to ingest log records from its forwarders.

    &lt;VulnDiscussion&gt;Log servers (e.g., syslog servers) are often used on network segments to consolidate from the devices and hosts on that netwo...
    Rule Medium Severity
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  • SRG-APP-000095-AU-000050

    <GroupDescription></GroupDescription>
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  • The System Administrator (SA) and Information System Security Manager (ISSM) must configure the retention of the log records based on the defined security plan.

    &lt;VulnDiscussion&gt;If authorized individuals do not have the ability to modify auditing parameters in response to a changing threat environment,...
    Rule Low Severity
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  • SRG-APP-000089-AU-000400

    <GroupDescription></GroupDescription>
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  • Splunk Enterprise must be configured to retain the DoD-defined attributes of the log records sent by the devices and hosts.

    &lt;VulnDiscussion&gt;Log records can be generated from various components within the application (e.g., process, module). Certain specific applica...
    Rule Medium Severity
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  • SRG-APP-000090-AU-000070

    <GroupDescription></GroupDescription>
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  • Splunk Enterprise must allow only the individuals appointed by the information system security manager (ISSM) to have full admin rights to the system.

    &lt;VulnDiscussion&gt;Without restricting which roles and individuals can select which events are audited, unauthorized personnel may be able to pr...
    Rule Low Severity
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  • SRG-APP-000358-AU-000100

    <GroupDescription></GroupDescription>
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  • Splunk Enterprise must be configured to offload log 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-APP-000359-AU-000120

    <GroupDescription></GroupDescription>
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  • Splunk Enterprise must be configured to send an immediate alert to the system administrator (SA) and information system security officer (ISSO) (at a minimum) when allocated log record storage volume reaches 75 percent of the repository maximum log record storage capacity.

    &lt;VulnDiscussion&gt;If security personnel are not notified immediately upon storage volume utilization reaching 75 percent, they are unable to pl...
    Rule Low Severity
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  • SRG-APP-000360-AU-000130

    <GroupDescription></GroupDescription>
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  • Splunk Enterprise must notify the System Administrator (SA) and Information System Security Officer (ISSO) (at a minimum) of all audit failure events, such as loss of communications with hosts and devices, or if log records are no longer being received.

    &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 Low Severity
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  • SRG-APP-000361-AU-000140

    <GroupDescription></GroupDescription>
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  • Splunk Enterprise must notify the System Administrator (SA) or Information System Security Officer (ISSO) if communication with the host and devices within its scope of coverage is lost.

    &lt;VulnDiscussion&gt;If the system were to continue processing after audit failure, actions could be taken on the system that could not be tracked...
    Rule Low Severity
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  • SRG-APP-000118-AU-000100

    <GroupDescription></GroupDescription>
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  • Splunk Enterprise installation directories must be secured.

    &lt;VulnDiscussion&gt;If audit data were to become compromised, then competent forensic analysis and discovery of the true source of potentially ma...
    Rule Medium Severity
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  • SRG-APP-000125-AU-000300

    <GroupDescription></GroupDescription>
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  • Splunk Enterprise must be configured to back up the log records repository at least every seven days onto a different system or system component other than the system or component being audited.

    &lt;VulnDiscussion&gt;Protection of log data includes ensuring log data is not accidentally lost or deleted. Backing up log records to a different ...
    Rule Low Severity
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  • SRG-APP-000516-AU-000330

    <GroupDescription></GroupDescription>
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  • Splunk Enterprise must be configured to retain the identity of the original source host or device where the event occurred as part of the log record.

    &lt;VulnDiscussion&gt;In this case the information producer is the device based on IP address or some other identifier of the device producing the ...
    Rule Medium Severity
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  • SRG-APP-000516-AU-000340

    <GroupDescription></GroupDescription>
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  • Splunk Enterprise must use TCP for data transmission.

    &lt;VulnDiscussion&gt;If the UDP protocol is used for communication, then data packets that do not reach the server are not detected as a data loss...
    Rule Medium Severity
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  • SRG-APP-000516-AU-000350

    <GroupDescription></GroupDescription>
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  • Splunk Enterprise must be configured with a report to notify the System Administrator (SA) and Information System Security Officer (ISSO), at a minimum, when an attack is detected on multiple devices and hosts within its scope of coverage.

    &lt;VulnDiscussion&gt;Detecting when multiple systems are showing anomalies can often indicate an attack. Notifying appropriate personnel can initi...
    Rule Medium Severity
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  • SRG-APP-000516-AU-000410

    <GroupDescription></GroupDescription>
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  • Analysis, viewing, and indexing functions, services, and applications used as part of Splunk Enterprise must be configured to comply with DoD-trusted path and access requirements.

    &lt;VulnDiscussion&gt;Access to Splunk Enterprise for analysis, viewing, indexing functions, services, and applications, such as analysis tools and...
    Rule Medium Severity
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  • SRG-APP-000141-AU-000090

    <GroupDescription></GroupDescription>
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  • When Splunk Enterprise is distributed over multiple servers, each server must be configured to disable non-essential capabilities.

    &lt;VulnDiscussion&gt;Applications are capable of providing a wide variety of functions and services. Some of the functions and services may not be...
    Rule Medium Severity
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  • SRG-APP-000148-AU-002270

    <GroupDescription></GroupDescription>
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  • Splunk Enterprise must use organization-level authentication to uniquely identify and authenticate users.

    &lt;VulnDiscussion&gt;To assure accountability and prevent unauthenticated access, organizational users must be uniquely identified and authenticat...
    Rule High Severity
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  • SRG-APP-000156-AU-002380

    <GroupDescription></GroupDescription>
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  • Splunk Enterprise must use HTTPS/SSL for access to the user interface.

    &lt;VulnDiscussion&gt;A replay attack may enable an unauthorized user to gain access to the application. Authentication sessions between the authen...
    Rule Medium Severity
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  • SRG-APP-000166-AU-002490

    <GroupDescription></GroupDescription>
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  • Splunk Enterprise must be configured to enforce password complexity by requiring that at least one uppercase character be used.

    &lt;VulnDiscussion&gt;Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, ...
    Rule Low Severity
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