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Microsoft Exchange 2019 Mailbox Server Security Technical Implementation Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • SRG-APP-000435

    <GroupDescription></GroupDescription>
    Group
  • Exchange must not send delivery reports to remote domains.

    &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-000435

    <GroupDescription></GroupDescription>
    Group
  • Exchange must not send nondelivery reports to remote domains.

    &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-000435

    <GroupDescription></GroupDescription>
    Group
  • The Exchange SMTP automated banner response must not reveal server details.

    &lt;VulnDiscussion&gt;Automated connection responses occur as a result of FTP or Telnet connections when connecting to those services. They report ...
    Rule Medium Severity
  • SRG-APP-000435

    <GroupDescription></GroupDescription>
    Group
  • Exchange internal send connectors must use an authentication level.

    &lt;VulnDiscussion&gt;The Simple Mail Transfer Protocol (SMTP) connector is used by Exchange to send and receive messages from server to server. Se...
    Rule Medium Severity
  • SRG-APP-000435

    <GroupDescription></GroupDescription>
    Group
  • Exchange must provide mailbox databases in a highly available and redundant configuration.

    &lt;VulnDiscussion&gt;Exchange Server mailbox databases and any data contained in those mailboxes should be protected. This can be accomplished by ...
    Rule Medium Severity
  • SRG-APP-000439

    <GroupDescription></GroupDescription>
    Group
  • The application must protect the confidentiality and integrity of transmitted information.

    &lt;VulnDiscussion&gt;Without protection of the transmitted information, confidentiality and integrity may be compromised since unprotected communi...
    Rule High Severity
  • SRG-APP-000456

    <GroupDescription></GroupDescription>
    Group
  • Exchange must have the most current, approved Cumulative Update installed.

    &lt;VulnDiscussion&gt;Failure to install the most current Exchange Cumulative Update (CU) leaves a system vulnerable to exploitation. Current CUs c...
    Rule Medium Severity
  • SRG-APP-000516

    <GroupDescription></GroupDescription>
    Group
  • Exchange must be configured in accordance with the security configuration settings based on DOD security configuration or implementation guidance, including STIGs, NSA configuration guides, CTOs, and DTMs.

    &lt;VulnDiscussion&gt;Configuring Exchange to implement organization-wide security implementation guides and security checklists ensures compliance...
    Rule Medium Severity

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