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Microsoft Exchange 2019 Mailbox Server Security Technical Implementation Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • SRG-APP-000014

    <GroupDescription></GroupDescription>
    Group
  • Exchange must use encryption for RPC client access.

    &lt;VulnDiscussion&gt;This setting controls whether client machines are forced to use secure channels to communicate with the server. If this featu...
    Rule Medium Severity
  • SRG-APP-000014

    <GroupDescription></GroupDescription>
    Group
  • Exchange must use encryption for Outlook Web App (OWA) access.

    &lt;VulnDiscussion&gt;This setting controls whether client machines should be forced to use secure channels to communicate with this virtual direct...
    Rule Medium Severity
  • SRG-APP-000014

    <GroupDescription></GroupDescription>
    Group
  • Exchange must have forms-based authentication enabled.

    &lt;VulnDiscussion&gt;Identification and Authentication provide the foundation for access control. Access to email services applications in the DOD...
    Rule Medium Severity
  • SRG-APP-000027

    <GroupDescription></GroupDescription>
    Group
  • Exchange must have administrator audit logging enabled.

    &lt;VulnDiscussion&gt;Unauthorized or malicious data changes can compromise the integrity and usefulness of the data. Automated attacks or maliciou...
    Rule Medium Severity
  • SRG-APP-000033

    <GroupDescription></GroupDescription>
    Group
  • Exchange servers must use approved DOD certificates.

    &lt;VulnDiscussion&gt;Server certificates are required for many security features in Exchange; without them, the server cannot engage in many forms...
    Rule Medium Severity
  • SRG-APP-000033

    <GroupDescription></GroupDescription>
    Group
  • Exchange must have authenticated access set to integrated Windows authentication only.

    &lt;VulnDiscussion&gt;To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DOD-ap...
    Rule Medium Severity
  • SRG-APP-000038

    <GroupDescription></GroupDescription>
    Group
  • Exchange auto-forwarding email to remote domains must be disabled or restricted.

    &lt;VulnDiscussion&gt;Attackers can use automated messages to determine whether a user account is active, in the office, traveling, and so on. An a...
    Rule Medium Severity
  • SRG-APP-000089

    <GroupDescription></GroupDescription>
    Group
  • Exchange connectivity logging must be enabled.

    &lt;VulnDiscussion&gt;A connectivity log is a record of the SMTP connection activity of the outbound message delivery queues to the destination Mai...
    Rule Medium Severity
  • SRG-APP-000089

    <GroupDescription></GroupDescription>
    Group
  • The Exchange email diagnostic log level must be set to the lowest level.

    &lt;VulnDiscussion&gt;Log files help establish a history of activities and can be useful in detecting attack attempts or determining tuning adjustm...
    Rule Medium Severity
  • SRG-APP-000089

    <GroupDescription></GroupDescription>
    Group
  • Exchange audit record parameters must be set.

    &lt;VulnDiscussion&gt;Log files help establish a history of activities and can be useful in detecting attack attempts. This item declares the field...
    Rule Low Severity
  • SRG-APP-000090

    <GroupDescription></GroupDescription>
    Group
  • The RBAC role for audit log management must be defined and restricted.

    &lt;VulnDiscussion&gt;The RBAC role for the audit log management "Audit Log Role" should be defined in the Organizational or Enterprise Domain Secu...
    Rule Medium Severity
  • SRG-APP-000098

    <GroupDescription></GroupDescription>
    Group
  • Exchange email subject line logging must be disabled.

    &lt;VulnDiscussion&gt;Log files help establish a history of activities and can be useful in detecting attack attempts or determining tuning adjustm...
    Rule Medium Severity
  • SRG-APP-000098

    <GroupDescription></GroupDescription>
    Group
  • Exchange message tracking logging must be enabled.

    &lt;VulnDiscussion&gt;A message tracking log provides a detailed log of all message activity as messages are transferred to and from a computer run...
    Rule Medium Severity
  • SRG-APP-000098

    <GroupDescription></GroupDescription>
    Group
  • Exchange circular logging must be disabled.

    &lt;VulnDiscussion&gt;Logging provides a history of events performed and can also provide evidence of tampering or attack. Failure to create and pr...
    Rule Low Severity
  • SRG-APP-000111

    <GroupDescription></GroupDescription>
    Group
  • Exchange queue monitoring must be configured with threshold and action.

    &lt;VulnDiscussion&gt;Monitors are automated "process watchers" that respond to performance changes and can be useful in detecting outages and aler...
    Rule Medium Severity
  • SRG-APP-000118

    <GroupDescription></GroupDescription>
    Group
  • Exchange must protect audit data against unauthorized read access.

    &lt;VulnDiscussion&gt;Log files help establish a history of activities and can be useful in detecting attack attempts or determining tuning adjustm...
    Rule Medium Severity
  • SRG-APP-000119

    <GroupDescription></GroupDescription>
    Group
  • Exchange must protect audit data against unauthorized access.

    &lt;VulnDiscussion&gt;Log files help establish a history of activities and can be useful in detecting attack attempts or determining tuning adjustm...
    Rule Medium Severity
  • SRG-APP-000120

    <GroupDescription></GroupDescription>
    Group
  • Exchange must protect audit data against unauthorized deletion.

    &lt;VulnDiscussion&gt;Log files help establish a history of activities and can be useful in detecting attack attempts or determining tuning adjustm...
    Rule Medium Severity
  • SRG-APP-000125

    <GroupDescription></GroupDescription>
    Group
  • Exchange audit data must be on separate partitions.

    &lt;VulnDiscussion&gt;Log files help establish a history of activities and can be useful in detecting attack attempts or determining tuning adjustm...
    Rule Medium Severity
  • SRG-APP-000131

    <GroupDescription></GroupDescription>
    Group
  • Exchange local machine policy must require signed scripts.

    &lt;VulnDiscussion&gt;Scripts often provide a way for attackers to infiltrate a system, especially scripts downloaded from untrusted locations. By ...
    Rule Medium Severity
  • SRG-APP-000141

    <GroupDescription></GroupDescription>
    Group
  • Exchange Send Fatal Errors to Microsoft must be disabled.

    &lt;VulnDiscussion&gt;It is detrimental for applications to provide, or install by default, functionality exceeding requirements or mission objecti...
    Rule Medium Severity
  • SRG-APP-000141

    <GroupDescription></GroupDescription>
    Group
  • Exchange must not send customer experience reports to Microsoft.

    &lt;VulnDiscussion&gt;It is detrimental for applications to provide, or install by default, functionality exceeding requirements or mission objecti...
    Rule Medium Severity
  • SRG-APP-000141

    <GroupDescription></GroupDescription>
    Group
  • The Exchange Internet Message Access Protocol 4 (IMAP4) service must be disabled.

    &lt;VulnDiscussion&gt;IMAP4 is not approved for use within the DOD. It uses a clear-text-based user name and password and does not support the DOD ...
    Rule Medium Severity
  • SRG-APP-000141

    <GroupDescription></GroupDescription>
    Group
  • The Exchange Post Office Protocol 3 (POP3) service must be disabled.

    &lt;VulnDiscussion&gt;POP3 is not approved for use within the DOD. It uses a clear-text-based user name and password and does not support the DOD s...
    Rule Medium Severity
  • SRG-APP-000211

    <GroupDescription></GroupDescription>
    Group
  • Exchange Mailbox databases must reside on a dedicated partition.

    &lt;VulnDiscussion&gt;In the same way that added security layers can provide a cumulative positive effect on security posture, multiple application...
    Rule Medium Severity

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