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I - Mission Critical Classified

Rules and Groups employed by this XCCDF Profile

  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
  • Windows Server 2019 services using Local System that use Negotiate when reverting to NTLM authentication must use the computer identity instead of authenticating anonymously.

    &lt;VulnDiscussion&gt;Services using Local System that use Negotiate when reverting to NTLM authentication may gain unauthorized access if allowed ...
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
  • Windows Server 2019 must prevent NTLM from falling back to a Null session.

    &lt;VulnDiscussion&gt;NTLM sessions that are allowed to fall back to Null (unauthenticated) sessions may gain unauthorized access.&lt;/VulnDiscussi...
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
  • Windows Server 2019 must prevent PKU2U authentication using online identities.

    &lt;VulnDiscussion&gt;PKU2U is a peer-to-peer authentication protocol. This setting prevents online identities from authenticating to domain-joined...
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
  • Windows Server 2019 LAN Manager authentication level must be configured to send NTLMv2 response only and to refuse LM and NTLM.

    &lt;VulnDiscussion&gt;The Kerberos v5 authentication protocol is the default for authentication of users who are logging on to domain accounts. NTL...
    Rule High Severity
  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
  • Windows Server 2019 must be configured to at least negotiate signing for LDAP client signing.

    &lt;VulnDiscussion&gt;This setting controls the signing requirements for LDAP clients. This must be set to "Negotiate signing" or "Require signing"...
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
  • Windows Server 2019 session security for NTLM SSP-based clients must be configured to require NTLMv2 session security and 128-bit encryption.

    &lt;VulnDiscussion&gt;Microsoft has implemented a variety of security support providers for use with Remote Procedure Call (RPC) sessions. All of t...
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
  • Windows Server 2019 session security for NTLM SSP-based servers must be configured to require NTLMv2 session security and 128-bit encryption.

    &lt;VulnDiscussion&gt;Microsoft has implemented a variety of security support providers for use with Remote Procedure Call (RPC) sessions. All of t...
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
  • Windows Server 2019 default permissions of global system objects must be strengthened.

    &lt;VulnDiscussion&gt;Windows systems maintain a global list of shared system resources such as DOS device names, mutexes, and semaphores. Each typ...
    Rule Low Severity
  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
  • Windows Server 2019 must preserve zone information when saving attachments.

    &lt;VulnDiscussion&gt;Attachments from outside sources may contain malicious code. Preserving zone of origin (Internet, intranet, local, restricted...
    Rule Medium Severity
  • SRG-OS-000480-GPOS-00229

    <GroupDescription></GroupDescription>
    Group
  • Windows Server 2019 must disable automatically signing in the last interactive user after a system-initiated restart.

    &lt;VulnDiscussion&gt;Windows can be configured to automatically sign the user back in after a Windows Update restart. Some protections are in plac...
    Rule Medium Severity

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