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I - Mission Critical Sensitive

Rules and Groups employed by this XCCDF Profile

  • SRG-OS-000480

    <GroupDescription></GroupDescription>
    Group
  • Membership to the Enterprise Admins group must be restricted to accounts used only to manage the Active Directory Forest.

    &lt;VulnDiscussion&gt;The Enterprise Admins group is a highly privileged group. Personnel who are system administrators must log on to Active Dire...
    Rule High Severity
  • SRG-OS-000480

    <GroupDescription></GroupDescription>
    Group
  • Membership to the Domain Admins group must be restricted to accounts used only to manage the Active Directory domain and domain controllers.

    &lt;VulnDiscussion&gt;The Domain Admins group is a highly privileged group. Personnel who are system administrators must log on to Active Director...
    Rule High Severity
  • SRG-OS-000480

    <GroupDescription></GroupDescription>
    Group
  • Administrators must have separate accounts specifically for managing domain member servers.

    &lt;VulnDiscussion&gt;Personnel who are system administrators must log on to domain systems only using accounts with the minimum level of authority...
    Rule Medium Severity
  • SRG-OS-000480

    <GroupDescription></GroupDescription>
    Group
  • Administrators must have separate accounts specifically for managing domain workstations.

    &lt;VulnDiscussion&gt;Personnel who are system administrators must log on to domain systems only using accounts with the minimum level of authority...
    Rule Medium Severity
  • SRG-OS-000480

    <GroupDescription></GroupDescription>
    Group
  • Delegation of privileged accounts must be prohibited.

    &lt;VulnDiscussion&gt;Privileged accounts such as those belonging to any of the administrator groups must not be trusted for delegation. Allowing p...
    Rule High Severity
  • SRG-OS-000112

    <GroupDescription></GroupDescription>
    Group
  • Local administrator accounts on domain systems must not share the same password.

    &lt;VulnDiscussion&gt;Local administrator accounts on domain systems must use unique passwords. In the event a domain system is compromised, sharin...
    Rule Medium Severity
  • SRG-OS-000480

    <GroupDescription></GroupDescription>
    Group
  • Separate smart cards must be used for Enterprise Admin (EA) and Domain Admin (DA) accounts from smart cards used for other accounts.

    &lt;VulnDiscussion&gt;A separate smart card for Enterprise Admin and Domain Admin accounts eliminates the automatic exposure of the private keys fo...
    Rule Medium Severity
  • SRG-OS-000480

    <GroupDescription></GroupDescription>
    Group
  • Separate domain accounts must be used to manage public facing servers from any domain accounts used to manage internal servers.

    &lt;VulnDiscussion&gt;Public facing servers should be in DMZs with separate Active Directory forests. If, because of operational necessity, this i...
    Rule Medium Severity
  • SRG-OS-000076

    <GroupDescription></GroupDescription>
    Group
  • Windows service \ application accounts with administrative privileges and manually managed passwords, must have passwords changed at least every 60 days.

    &lt;VulnDiscussion&gt;NT hashes of passwords for accounts that are not changed regularly are susceptible to reuse by attackers using Pass-the-Hash....
    Rule Medium Severity
  • SRG-OS-000480

    <GroupDescription></GroupDescription>
    Group
  • Domain controllers must be blocked from Internet access.

    &lt;VulnDiscussion&gt; Domain controllers provide access to highly privileged areas of a domain. Such systems with Internet access may be exposed ...
    Rule Medium Severity
  • SRG-OS-000076

    <GroupDescription></GroupDescription>
    Group
  • All accounts, privileged and unprivileged, that require smart cards must have the underlying NT hash rotated at least every 60 days.

    &lt;VulnDiscussion&gt;When a smart card is required for a domain account, a long password, unknown to the user, is generated. This password and ass...
    Rule Medium Severity
  • SRG-OS-000480

    <GroupDescription></GroupDescription>
    Group
  • User accounts with domain level administrative privileges must be members of the Protected Users group in domains with a domain functional level of Windows 2012 R2 or higher.

    &lt;VulnDiscussion&gt;User accounts with domain level administrative privileges are highly prized in Pass-the-Hash/credential theft attacks. The P...
    Rule Medium Severity
  • SRG-OS-000480

    <GroupDescription></GroupDescription>
    Group
  • Domain-joined systems (excluding domain controllers) must not be configured for unconstrained delegation.

    &lt;VulnDiscussion&gt;Unconstrained delegation enabled on a computer can allow the computer account to be impersonated without limitation. If deleg...
    Rule Medium Severity
  • SRG-OS-000480

    <GroupDescription></GroupDescription>
    Group
  • The Directory Service Restore Mode (DSRM) password must be changed at least annually.

    &lt;VulnDiscussion&gt;The Directory Service Restore Mode (DSRM) password, used to log on to a domain controller (DC) when rebooting into the server...
    Rule Medium Severity
  • SRG-OS-000480

    <GroupDescription></GroupDescription>
    Group
  • The domain functional level must be at a Windows Server version still supported by Microsoft.

    &lt;VulnDiscussion&gt;Domains operating at functional levels below Windows Server versions no longer supported by Microsoft reduce the level of sec...
    Rule Medium Severity
  • SRG-OS-000480

    <GroupDescription></GroupDescription>
    Group
  • Access to need-to-know information must be restricted to an authorized community of interest.

    &lt;VulnDiscussion&gt;Because trust relationships effectively eliminate a level of authentication in the trusting domain or forest, they represent ...
    Rule Medium Severity
  • SRG-OS-000480

    <GroupDescription></GroupDescription>
    Group
  • Interconnections between DoD directory services of different classification levels must use a cross-domain solution that is approved for use with inter-classification trusts.

    &lt;VulnDiscussion&gt;If a robust cross-domain solution is not used, then it could permit unauthorized access to classified data. To support secure...
    Rule High Severity
  • SRG-OS-000480

    <GroupDescription></GroupDescription>
    Group
  • A controlled interface must have interconnections among DoD information systems operating between DoD and non-DoD systems or networks.

    &lt;VulnDiscussion&gt;The configuration of an AD trust relationship is one of the steps used to allow users in one domain to access resources in an...
    Rule High Severity
  • SRG-OS-000104

    <GroupDescription></GroupDescription>
    Group
  • Security identifiers (SIDs) must be configured to use only authentication data of directly trusted external or forest trust.

    &lt;VulnDiscussion&gt;Under some circumstances it is possible for attackers or rogue administrators that have compromised a domain controller in a ...
    Rule Medium Severity
  • SRG-OS-000080

    <GroupDescription></GroupDescription>
    Group
  • Selective Authentication must be enabled on outgoing forest trusts.

    &lt;VulnDiscussion&gt;Enabling Selective Authentication on outbound Active Directory (AD) forest trusts significantly strengthens access control by...
    Rule Medium Severity
  • SRG-OS-000121

    <GroupDescription></GroupDescription>
    Group
  • The Anonymous Logon and Everyone groups must not be members of the Pre-Windows 2000 Compatible Access group.

    &lt;VulnDiscussion&gt;The Pre-Windows 2000 Compatible Access group was created to allow Windows NT domains to interoperate with AD domains by allow...
    Rule Medium Severity
  • SRG-OS-000480

    <GroupDescription></GroupDescription>
    Group
  • Membership in the Group Policy Creator Owners and Incoming Forest Trust Builders groups must be limited.

    &lt;VulnDiscussion&gt;Membership in the Group Policy Creator Owners and Incoming Forest Trust Builders groups assigns a high privilege level for AD...
    Rule Medium Severity
  • SRG-OS-000480

    <GroupDescription></GroupDescription>
    Group
  • User accounts with delegated authority must be removed from Windows built-in administrative groups or remove the delegated authority from the accounts.

    &lt;VulnDiscussion&gt;In AD it is possible to delegate account and other AD object ownership and administration tasks. (This is commonly done for h...
    Rule Low Severity
  • SRG-OS-000480

    <GroupDescription></GroupDescription>
    Group
  • Read-only Domain Controller (RODC) architecture and configuration must comply with directory services requirements.

    &lt;VulnDiscussion&gt;The RODC role provides a unidirectional replication method for selected information from your internal network to the DMZ. If...
    Rule Medium Severity
  • SRG-OS-000480

    <GroupDescription></GroupDescription>
    Group
  • Usage of administrative accounts must be monitored for suspicious and anomalous activity.

    &lt;VulnDiscussion&gt;Monitoring the usage of administrative accounts can alert on suspicious behavior and anomalous account usage that would be in...
    Rule Medium Severity

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