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Microsoft Windows Server 2016 Security Technical Implementation Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • SRG-OS-000425-GPOS-00189

    <GroupDescription></GroupDescription>
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  • Protection methods such as TLS, encrypted VPNs, or IPsec must be implemented if the data owner has a strict requirement for ensuring data integrity and confidentiality is maintained at every step of the data transfer and handling process.

    &lt;VulnDiscussion&gt;Information can be either unintentionally or maliciously disclosed or modified during preparation for transmission, for examp...
    Rule Medium Severity
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  • SRG-OS-000095-GPOS-00049

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  • The roles and features required by the system must be documented.

    &lt;VulnDiscussion&gt;Unnecessary roles and features increase the attack surface of a system. Limiting roles and features of a system to only those...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

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  • A host-based firewall must be installed and enabled on the system.

    &lt;VulnDiscussion&gt;A firewall provides a line of defense against attack, allowing or blocking inbound and outbound connections based on a set of...
    Rule Medium Severity
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  • SRG-OS-000191-GPOS-00080

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  • Windows Server 2016 must employ automated mechanisms to determine the state of system components with regard to flaw remediation using the following frequency: continuously, where Endpoint Security Solution (ESS) is used; 30 days, for any additional internal network scans not covered by ESS; and annually, for external scans by Computer Network Defense Service Provider (CNDSP).

    &lt;VulnDiscussion&gt;Without the use of automated mechanisms to scan for security flaws on a continuous and/or periodic basis, the operating syste...
    Rule Medium Severity
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  • SRG-OS-000002-GPOS-00002

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  • Windows Server 2016 must automatically remove or disable temporary user accounts after 72 hours.

    &lt;VulnDiscussion&gt;If temporary user accounts remain active when no longer needed or for an excessive period, these accounts may be used to gain...
    Rule Medium Severity
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  • SRG-OS-000123-GPOS-00064

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  • Windows Server 2016 must automatically remove or disable emergency accounts after the crisis is resolved or within 72 hours.

    &lt;VulnDiscussion&gt;Emergency administrator accounts are privileged accounts established in response to crisis situations where the need for rapi...
    Rule Medium Severity
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  • SRG-OS-000095-GPOS-00049

    <GroupDescription></GroupDescription>
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  • The Fax Server role must not be installed.

    &lt;VulnDiscussion&gt;Unnecessary services increase the attack surface of a system. Some of these services may not support required levels of authe...
    Rule Medium Severity
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  • SRG-OS-000096-GPOS-00050

    <GroupDescription></GroupDescription>
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  • The Microsoft FTP service must not be installed unless required.

    &lt;VulnDiscussion&gt;Unnecessary services increase the attack surface of a system. Some of these services may not support required levels of authe...
    Rule Medium Severity
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  • SRG-OS-000095-GPOS-00049

    <GroupDescription></GroupDescription>
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  • The Peer Name Resolution Protocol must not be installed.

    &lt;VulnDiscussion&gt;Unnecessary services increase the attack surface of a system. Some of these services may not support required levels of authe...
    Rule Medium Severity
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  • SRG-OS-000095-GPOS-00049

    <GroupDescription></GroupDescription>
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  • Simple TCP/IP Services must not be installed.

    &lt;VulnDiscussion&gt;Unnecessary services increase the attack surface of a system. Some of these services may not support required levels of authe...
    Rule Medium Severity
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  • SRG-OS-000096-GPOS-00050

    <GroupDescription></GroupDescription>
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  • The Telnet Client must not be installed.

    &lt;VulnDiscussion&gt;Unnecessary services increase the attack surface of a system. Some of these services may not support required levels of authe...
    Rule Medium Severity
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  • SRG-OS-000095-GPOS-00049

    <GroupDescription></GroupDescription>
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  • The TFTP Client must not be installed.

    &lt;VulnDiscussion&gt;Unnecessary services increase the attack surface of a system. Some of these services may not support required levels of authe...
    Rule Medium Severity
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  • SRG-OS-000095-GPOS-00049

    <GroupDescription></GroupDescription>
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  • The Server Message Block (SMB) v1 protocol must be uninstalled.

    &lt;VulnDiscussion&gt;SMBv1 is a legacy protocol that uses the MD5 algorithm as part of SMB. MD5 is known to be vulnerable to a number of attacks s...
    Rule Medium Severity
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  • SRG-OS-000095-GPOS-00049

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  • The Server Message Block (SMB) v1 protocol must be disabled on the SMB server.

    &lt;VulnDiscussion&gt;SMBv1 is a legacy protocol that uses the MD5 algorithm as part of SMB. MD5 is known to be vulnerable to a number of attacks s...
    Rule Medium Severity
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  • SRG-OS-000095-GPOS-00049

    <GroupDescription></GroupDescription>
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  • The Server Message Block (SMB) v1 protocol must be disabled on the SMB client.

    &lt;VulnDiscussion&gt;SMBv1 is a legacy protocol that uses the MD5 algorithm as part of SMB. MD5 is known to be vulnerable to a number of attacks s...
    Rule Medium Severity
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  • SRG-OS-000095-GPOS-00049

    <GroupDescription></GroupDescription>
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  • Windows PowerShell 2.0 must not be installed.

    &lt;VulnDiscussion&gt;Windows PowerShell 5.0 added advanced logging features that can provide additional detail when malware has been run on a syst...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

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  • FTP servers must be configured to prevent anonymous logons.

    &lt;VulnDiscussion&gt;The FTP service allows remote users to access shared files and directories. Allowing anonymous FTP connections makes user aud...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

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  • FTP servers must be configured to prevent access to the system drive.

    &lt;VulnDiscussion&gt;The FTP service allows remote users to access shared files and directories that could provide access to system resources and ...
    Rule Medium Severity
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  • SRG-OS-000355-GPOS-00143

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  • The time service must synchronize with an appropriate DoD time source.

    &lt;VulnDiscussion&gt;The Windows Time Service controls time synchronization settings. Time synchronization is essential for authentication and aud...
    Rule Low Severity
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  • SRG-OS-000480-GPOS-00227

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  • Orphaned security identifiers (SIDs) must be removed from user rights on Windows 2016.

    &lt;VulnDiscussion&gt;Accounts or groups given rights on a system may show up as unresolved SIDs for various reasons including deletion of the acco...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

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  • Secure Boot must be enabled on Windows Server 2016 systems.

    &lt;VulnDiscussion&gt;Secure Boot is a standard that ensures systems boot only to a trusted operating system. Secure Boot is required to support ad...
    Rule Low Severity
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  • SRG-OS-000480-GPOS-00227

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  • Windows 2016 systems must have Unified Extensible Firmware Interface (UEFI) firmware and be configured to run in UEFI mode, not Legacy BIOS.

    &lt;VulnDiscussion&gt;UEFI provides additional security features in comparison to legacy BIOS firmware, including Secure Boot. UEFI is required to ...
    Rule Low Severity
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  • SRG-OS-000329-GPOS-00128

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  • Windows 2016 account lockout duration must be configured to 15 minutes or greater.

    &lt;VulnDiscussion&gt;The account lockout feature, when enabled, prevents brute-force password attacks on the system. This parameter specifies the ...
    Rule Medium Severity
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  • SRG-OS-000021-GPOS-00005

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  • Windows Server 2016 must have the number of allowed bad logon attempts configured to three or less.

    &lt;VulnDiscussion&gt;The account lockout feature, when enabled, prevents brute-force password attacks on the system. The higher this value is, the...
    Rule Medium Severity
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  • SRG-OS-000021-GPOS-00005

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  • Windows Server 2016 must have the period of time before the bad logon counter is reset configured to 15 minutes or greater.

    &lt;VulnDiscussion&gt;The account lockout feature, when enabled, prevents brute-force password attacks on the system. This parameter specifies the ...
    Rule Medium Severity
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