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Microsoft Windows Server 2022 Security Technical Implementation Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
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  • Windows Server 2022 must not allow anonymous enumeration of Security Account Manager (SAM) accounts.

    &lt;VulnDiscussion&gt;Anonymous enumeration of SAM accounts allows anonymous logon users (null session connections) to list all accounts names, thu...
    Rule High Severity
    Show

  • SRG-OS-000138-GPOS-00069

    <GroupDescription></GroupDescription>
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  • Windows Server 2022 must not allow anonymous enumeration of shares.

    &lt;VulnDiscussion&gt;Allowing anonymous logon users (null session connections) to list all account names and enumerate all shared resources can pr...
    Rule High Severity
    Show

  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
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  • Windows Server 2022 must be configured to prevent anonymous users from having the same permissions as the Everyone group.

    &lt;VulnDiscussion&gt;Access by anonymous users must be restricted. If this setting is enabled, anonymous users have the same rights and permission...
    Rule Medium Severity
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  • SRG-OS-000138-GPOS-00069

    <GroupDescription></GroupDescription>
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  • Windows Server 2022 must restrict anonymous access to Named Pipes and Shares.

    &lt;VulnDiscussion&gt;Allowing anonymous access to named pipes or shares provides the potential for unauthorized system access. This setting restri...
    Rule High Severity
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  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
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  • Windows Server 2022 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
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  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
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  • Windows Server 2022 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
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  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
    Group
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  • Windows Server 2022 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
    Show

  • SRG-OS-000120-GPOS-00061

    <GroupDescription></GroupDescription>
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  • Windows Server 2022 Kerberos encryption types must be configured to prevent the use of DES and RC4 encryption suites.

    &lt;VulnDiscussion&gt;Certain encryption types are no longer considered secure. The DES and RC4 encryption suites must not be used for Kerberos enc...
    Rule Medium Severity
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  • SRG-OS-000073-GPOS-00041

    <GroupDescription></GroupDescription>
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  • Windows Server 2022 must be configured to prevent the storage of the LAN Manager hash of passwords.

    &lt;VulnDiscussion&gt;The LAN Manager hash uses a weak encryption algorithm and there are several tools available that use this hash to retrieve ac...
    Rule High Severity
    Show

  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
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  • Windows Server 2022 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
    Show

  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
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  • Windows Server 2022 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
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  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
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  • Windows Server 2022 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
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  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
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  • Windows Server 2022 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
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  • SRG-OS-000067-GPOS-00035

    <GroupDescription></GroupDescription>
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  • Windows Server 2022 users must be required to enter a password to access private keys stored on the computer.

    &lt;VulnDiscussion&gt;If the private key is discovered, an attacker can use the key to authenticate as an authorized user and gain access to the ne...
    Rule Medium Severity
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  • SRG-OS-000478-GPOS-00223

    <GroupDescription></GroupDescription>
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  • Windows Server 2022 must be configured to use FIPS-compliant algorithms for encryption, hashing, and signing.

    &lt;VulnDiscussion&gt;This setting ensures the system uses algorithms that are FIPS-compliant for encryption, hashing, and signing. FIPS-compliant ...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
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  • Windows Server 2022 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
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  • SRG-OS-000373-GPOS-00156

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  • Windows Server 2022 User Account Control (UAC) approval mode for the built-in Administrator must be enabled.

    &lt;VulnDiscussion&gt;UAC is a security mechanism for limiting the elevation of privileges, including administrative accounts, unless authorized. T...
    Rule Medium Severity
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  • SRG-OS-000134-GPOS-00068

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  • Windows Server 2022 UIAccess applications must not be allowed to prompt for elevation without using the secure desktop.

    &lt;VulnDiscussion&gt;User Account Control (UAC) is a security mechanism for limiting the elevation of privileges, including administrative account...
    Rule Medium Severity
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  • SRG-OS-000134-GPOS-00068

    <GroupDescription></GroupDescription>
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  • Windows Server 2022 User Account Control (UAC) must, at a minimum, prompt administrators for consent on the secure desktop.

    &lt;VulnDiscussion&gt;UAC is a security mechanism for limiting the elevation of privileges, including administrative accounts, unless authorized. T...
    Rule Medium Severity
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  • SRG-OS-000373-GPOS-00156

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  • Windows Server 2022 User Account Control (UAC) must automatically deny standard user requests for elevation.

    &lt;VulnDiscussion&gt;UAC is a security mechanism for limiting the elevation of privileges, including administrative accounts, unless authorized. T...
    Rule Medium Severity
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  • SRG-OS-000134-GPOS-00068

    <GroupDescription></GroupDescription>
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  • Windows Server 2022 User Account Control (UAC) must be configured to detect application installations and prompt for elevation.

    &lt;VulnDiscussion&gt;UAC is a security mechanism for limiting the elevation of privileges, including administrative accounts, unless authorized. T...
    Rule Medium Severity
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  • SRG-OS-000134-GPOS-00068

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  • Windows Server 2022 User Account Control (UAC) must only elevate UIAccess applications that are installed in secure locations.

    &lt;VulnDiscussion&gt;UAC is a security mechanism for limiting the elevation of privileges, including administrative accounts, unless authorized. T...
    Rule Medium Severity
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  • SRG-OS-000373-GPOS-00156

    <GroupDescription></GroupDescription>
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  • Windows Server 2022 User Account Control (UAC) must run all administrators in Admin Approval Mode, enabling UAC.

    &lt;VulnDiscussion&gt;UAC is a security mechanism for limiting the elevation of privileges, including administrative accounts, unless authorized. T...
    Rule Medium Severity
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  • SRG-OS-000134-GPOS-00068

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  • Windows Server 2022 User Account Control (UAC) must virtualize file and registry write failures to per-user locations.

    &lt;VulnDiscussion&gt;UAC is a security mechanism for limiting the elevation of privileges, including administrative accounts, unless authorized. T...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

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  • Windows Server 2022 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
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