Windows 10 Security Technical Implementation Guide

V1R1 2016-01-07       U_Windows_10_V1R1_STIG_SCAP_1-1_Benchmark-xccdf.xml
The Windows 10 Security Technical Implementation Guide (STIG) is published as a tool to improve the security of Department of Defense (DoD) information systems. Comments or proposed revisions to this document should be sent via e-mail to the following address: [email protected]
Vuln Rule Version CCI Severity Title Description
SV-77809r1_rule WN10-00-000005 CCI-000366 MEDIUM Domain-joined systems must use Windows 10 Enterprise Edition. Features such as Credential Guard uses virtualization based security to protect secrets that could be used in credential theft attacks if compromised. There are a number of system requirements that must be met in order for Credential Guard to be configured and enabled properly. Virtualization based security and Credential Guard are only available with Windows 10 Enterprise.
SV-77811r1_rule WN10-CC-000310 CCI-001812 MEDIUM Users must be prevented from changing installation options. Installation options for applications are typically controlled by administrators. This setting prevents users from changing installation options that may bypass security features.
SV-77815r1_rule WN10-CC-000315 CCI-001812 HIGH The Windows Installer Always install with elevated privileges must be disabled. Standard user accounts must not be granted elevated privileges. Enabling Windows Installer to elevate privileges when installing applications can allow malicious persons and applications to gain full control of a system.
SV-77819r1_rule WN10-CC-000320 CCI-000366 MEDIUM Users must be notified if a web-based program attempts to install software. Web-based programs may attempt to install malicious software on a system. Ensuring users are notified if a web-based program attempts to install software allows them to refuse the installation.
SV-77823r1_rule WN10-CC-000325 CCI-000366 MEDIUM Automatically signing in the last interactive user after a system-initiated restart must be disabled. Windows can be configured to automatically sign the user back in after a Windows Update restart. Some protections are in place to help ensure this is done in a secure fashion; however, disabling this will prevent the caching of credentials for this purpose and also ensure the user is aware of the restart.
SV-77825r1_rule WN10-CC-000330 CCI-000877 HIGH The Windows Remote Management (WinRM) client must not use Basic authentication. Basic authentication uses plain text passwords that could be used to compromise a system.
SV-77829r1_rule WN10-CC-000335 CCI-002890 MEDIUM The Windows Remote Management (WinRM) client must not allow unencrypted traffic. Unencrypted remote access to a system can allow sensitive information to be compromised. Windows remote management connections must be encrypted to prevent this.
SV-77831r1_rule WN10-CC-000340 CCI-000877 MEDIUM The Windows Remote Management (WinRM) client must not use Digest authentication. Digest authentication is not as strong as other options and may be subject to man-in-the-middle attacks.
SV-77837r1_rule WN10-CC-000345 CCI-000877 HIGH The Windows Remote Management (WinRM) service must not use Basic authentication. Basic authentication uses plain text passwords that could be used to compromise a system.
SV-77839r1_rule WN10-00-000040 CCI-000366 HIGH Systems must be maintained at a supported servicing level. Systems at unsupported servicing levels or releases will not receive security updates for new vulnerabilities which leaves them subject to exploitation. Windows 10 is maintained by Microsoft at servicing levels for specific periods of time to support Windows as a Service. The Current Branch (CB) is the only option for consumer versions and will be maintained for approximately 4 months before a new CB is declared. Only the current CB is serviced with updates. Professional and Enterprise versions may select the Current Branch for Business (CBB) which is declared at the end of a Current Branch period and will be maintained for approximately 8 additional months. There will only be 2 CBBs active at any given time which will be serviced with updates. A separate servicing branch intended for special purpose systems is the Long-Term Servicing Branch which will receive security updates for 10 years but excludes feature updates.
SV-77843r1_rule WN10-00-000050 CCI-000213 HIGH Local volumes must be formatted using NTFS. The ability to set access permissions and auditing is critical to maintaining the security and proper access controls of a system. To support this, volumes must be formatted using the NTFS file system.
SV-77855r1_rule WN10-00-000080 CCI-000381 MEDIUM Users must not be allowed to run virtual machines in Hyper-V on the system. Allowing other operating systems to run on a secure system may allow users to circumvent security. Hyper-V is used by the Credential Guard feature on Windows 10. Preventing users from being assigned to the Hyper-V Administrators group will prevent them from accessing or creating virtual machines on the system.
SV-77859r1_rule WN10-CC-000350 CCI-002890 MEDIUM The Windows Remote Management (WinRM) service must not allow unencrypted traffic. Unencrypted remote access to a system can allow sensitive information to be compromised. Windows remote management connections must be encrypted to prevent this.
SV-77861r1_rule WN10-00-000090 CCI-000199 MEDIUM Accounts must be configured to require password expiration. Passwords that do not expire increase exposure with a greater probability of being discovered or cracked.
SV-77865r1_rule WN10-CC-000355 CCI-002038 MEDIUM The Windows Remote Management (WinRM) service must not store RunAs credentials. Storage of administrative credentials could allow unauthorized access. Disallowing the storage of RunAs credentials for Windows Remote Management will prevent them from being used with plug-ins.
SV-77867r1_rule WN10-00-000100 CCI-000381 HIGH Internet Information System (IIS) or its subcomponents must not be installed on a workstation. Installation of Internet Information System (IIS) may allow unauthorized internet services to be hosted. Websites must only be hosted on servers that have been designed for that purpose and can be adequately secured.
SV-77869r1_rule WN10-EM-000005 CCI-000366 HIGH The Enhanced Mitigation Experience Toolkit (EMET) v5.5 or later must be installed on the system. Attackers are constantly looking for vulnerabilities in systems and applications. The Enhanced Mitigation Experience Toolkit can enable several mechanisms, such as Data Execution Prevention (DEP), Address Space Layout Randomization (ASLR), and Structured Exception Handler Overwrite Protection (SEHOP) on the system and applications adding additional levels of protection.
SV-77871r1_rule WN10-00-000105 CCI-000382 MEDIUM Simple Network Management Protocol (SNMP) must not be installed on the system. Some protocols and services do not support required security features, such as encrypting passwords or traffic.
SV-77873r1_rule WN10-00-000110 CCI-000381 MEDIUM Simple TCP/IP Services must not be installed on the system. Some protocols and services do not support required security features, such as encrypting passwords or traffic.
SV-77875r1_rule WN10-00-000115 CCI-000382 MEDIUM The Telnet Client must not be installed on the system. Some protocols and services do not support required security features, such as encrypting passwords or traffic.
SV-77877r1_rule WN10-EM-000010 CCI-002824 MEDIUM The Enhanced Mitigation Experience Toolkit (EMET) Default Protections for Internet Explorer must be enabled. Attackers are constantly looking for vulnerabilities in systems and applications. The Enhanced Mitigation Experience Toolkit can enable several mechanisms, such as Data Execution Prevention (DEP), Address Space Layout Randomization (ASLR), and Structured Exception Handler Overwrite Protection (SEHOP) on the system and applications adding additional levels of protection.
SV-77879r1_rule WN10-00-000120 CCI-000382 MEDIUM The TFTP Client must not be installed on the system. Some protocols and services do not support required security features, such as encrypting passwords or traffic.
SV-77881r1_rule WN10-EM-000015 CCI-002824 MEDIUM The Enhanced Mitigation Experience Toolkit (EMET) Default Protections for Popular Software must be enabled. Attackers are constantly looking for vulnerabilities in systems and applications. The Enhanced Mitigation Experience Toolkit can enable several mechanisms, such as Data Execution Prevention (DEP), Address Space Layout Randomization (ASLR), and Structured Exception Handler Overwrite Protection (SEHOP) on the system and applications adding additional levels of protection.
SV-77885r1_rule WN10-00-000125 CCI-000366 MEDIUM The HBSS McAfee Agent must be installed.
SV-77887r1_rule WN10-EM-000020 CCI-002824 MEDIUM The Enhanced Mitigation Experience Toolkit (EMET) Default Protections for Recommended Software must be enabled. Attackers are constantly looking for vulnerabilities in systems and applications. The Enhanced Mitigation Experience Toolkit can enable several mechanisms, such as Data Execution Prevention (DEP), Address Space Layout Randomization (ASLR), and Structured Exception Handler Overwrite Protection (SEHOP) on the system and applications adding additional levels of protection.
SV-77891r1_rule WN10-EM-000025 CCI-002824 MEDIUM The Enhanced Mitigation Experience Toolkit (EMET) system-wide Address Space Layout Randomization (ASLR) must be enabled and configured to Application Opt In. Attackers are constantly looking for vulnerabilities in systems and applications. The Enhanced Mitigation Experience Toolkit can enable several mechanisms, such as Data Execution Prevention (DEP), Address Space Layout Randomization (ASLR), and Structured Exception Handler Overwrite Protection (SEHOP) on the system and applications adding additional levels of protection.
SV-77895r1_rule WN10-AC-000005 CCI-002238 MEDIUM The lockout duration must be configured to require an administrator to unlock an account. The account lockout feature, when enabled, prevents brute-force password attacks on the system. This parameter specifies the amount of time that an account will remain locked after the specified number of failed logon attempts. A value of 0 will require an administrator to unlock the account.
SV-77897r1_rule WN10-EM-000030 CCI-002824 MEDIUM The Enhanced Mitigation Experience Toolkit (EMET) system-wide Data Execution Prevention (DEP) must be enabled and configured to at least Application Opt Out. Attackers are constantly looking for vulnerabilities in systems and applications. The Enhanced Mitigation Experience Toolkit can enable several mechanisms, such as Data Execution Prevention (DEP), Address Space Layout Randomization (ASLR), and Structured Exception Handler Overwrite Protection (SEHOP) on the system and applications adding additional levels of protection.
SV-77899r1_rule WN10-AC-000010 CCI-000044 MEDIUM The number of allowed bad logon attempts must be configured to 3 or less. The account lockout feature, when enabled, prevents brute-force password attacks on the system. The higher this value is, the less effective the account lockout feature will be in protecting the local system. The number of bad logon attempts must be reasonably small to minimize the possibility of a successful password attack, while allowing for honest errors made during a normal user logon.
SV-77901r1_rule WN10-EM-000035 CCI-002824 MEDIUM The Enhanced Mitigation Experience Toolkit (EMET) system-wide Structured Exception Handler Overwrite Protection (SEHOP) must be configured to Application Opt Out. Attackers are constantly looking for vulnerabilities in systems and applications. The Enhanced Mitigation Experience Toolkit can enable several mechanisms, such as Data Execution Prevention (DEP), Address Space Layout Randomization (ASLR), and Structured Exception Handler Overwrite Protection (SEHOP) on the system and applications adding additional levels of protection.
SV-77903r1_rule WN10-AC-000015 CCI-000044 MEDIUM The period of time before the bad logon counter is reset must be configured to 15 minutes. The account lockout feature, when enabled, prevents brute-force password attacks on the system. This parameter specifies the period of time that must pass after failed logon attempts before the counter is reset to 0. The smaller this value is, the less effective the account lockout feature will be in protecting the local system.
SV-77905r1_rule WN10-AC-000020 CCI-000200 MEDIUM The password history must be configured to 24 passwords remembered. A system is more vulnerable to unauthorized access when system users recycle the same password several times without being required to change a password to a unique password on a regularly scheduled basis. This enables users to effectively negate the purpose of mandating periodic password changes.
SV-77907r1_rule WN10-EM-000040 CCI-002824 MEDIUM The Enhanced Mitigation Experience Toolkit (EMET) Default Actions and Mitigations Settings must enable Deep Hooks. Attackers are constantly looking for vulnerabilities in systems and applications. The Enhanced Mitigation Experience Toolkit can enable several mechanisms, such as Data Execution Prevention (DEP), Address Space Layout Randomization (ASLR), and Structured Exception Handler Overwrite Protection (SEHOP) on the system and applications adding additional levels of protection. This setting enables the Deep Hooks mitigation on a system which protects lower level APIs that are used by critical top level APIs.
SV-77909r1_rule WN10-AC-000025 CCI-000199 MEDIUM The maximum password age must be configured to 60 days or less. The longer a password is in use, the greater the opportunity for someone to gain unauthorized knowledge of the passwords. Scheduled changing of passwords hinders the ability of unauthorized system users to crack passwords and gain access to a system.
SV-77911r1_rule WN10-AC-000030 CCI-000198 MEDIUM The minimum password age must be configured to at least 1 day. Permitting passwords to be changed in immediate succession within the same day allows users to cycle passwords through their history database. This enables users to effectively negate the purpose of mandating periodic password changes.
SV-77913r1_rule WN10-AC-000035 CCI-000205 MEDIUM Passwords must, at a minimum, be 14 characters. Information systems not protected with strong password schemes (including passwords of minimum length) provide the opportunity for anyone to crack the password, thus gaining access to the system and compromising the device, information, or the local network.
SV-77915r1_rule WN10-EM-000045 CCI-002824 MEDIUM The Enhanced Mitigation Experience Toolkit (EMET) Default Actions and Mitigations Settings must enable Anti Detours. Attackers are constantly looking for vulnerabilities in systems and applications. The Enhanced Mitigation Experience Toolkit can enable several mechanisms, such as Data Execution Prevention (DEP), Address Space Layout Randomization (ASLR), and Structured Exception Handler Overwrite Protection (SEHOP) on the system and applications adding additional levels of protection. This setting enables the Anti detours mitigation on a system which prevents exploits from evading hooks functions.
SV-77917r1_rule WN10-AC-000040 CCI-000192 MEDIUM The built-in Microsoft password complexity filter must be enabled. The use of complex passwords increases their strength against guessing and brute-force attacks. This setting configures the system to verify that newly created passwords conform to the Windows password complexity policy.
SV-77919r1_rule WN10-AC-000045 CCI-000196 HIGH Reversible password encryption must be disabled. Storing passwords using reversible encryption is essentially the same as storing clear-text versions of the passwords. For this reason, this policy must never be enabled.
SV-77923r1_rule WN10-EM-000050 CCI-002824 MEDIUM The Enhanced Mitigation Experience Toolkit (EMET) Default Actions and Mitigations Settings must enable Banned Functions. Attackers are constantly looking for vulnerabilities in systems and applications. The Enhanced Mitigation Experience Toolkit can enable several mechanisms, such as Data Execution Prevention (DEP), Address Space Layout Randomization (ASLR), and Structured Exception Handler Overwrite Protection (SEHOP) on the system and applications adding additional levels of protection. This setting enables the Banned functions mitigation on a system which blocks certain APIs.
SV-77927r1_rule WN10-ER-000005 CCI-001312 MEDIUM The Windows Error Reporting Service must be running and configured to start automatically. Windows Error Reporting information can be used to help diagnose day-to-day software issues, as well as help discover malicious code and possibly zero-day attacks on systems.
SV-77949r1_rule WN10-ER-000010 CCI-001312 MEDIUM The system must be configured to generate error reports. Enabling Windows Error Reporting generates information useful to system administrators and forensics analysts for diagnosing system problems and investigating intrusions. If Windows Error Reporting is turned off, valuable system diagnostic and vulnerability information may be lost.
SV-77979r1_rule WN10-ER-000015 CCI-001312 MEDIUM The system must be configured to save Error Reporting events and messages to the system event log. Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. This setting ensures that Error Reporting events will be saved in the system event log.
SV-77983r1_rule WN10-ER-000020 CCI-001312 MEDIUM The system must be configured to allow a local or DOD-wide collector to request additional error reporting diagnostic data to be sent. Sending additional error reporting data provides valuable system diagnostic and vulnerability information that would otherwise not be generated nor collected. This setting controls whether additional data in support of error reports can be sent to a local or DOD-wide reporting site.
SV-77987r1_rule WN10-ER-000025 CCI-001312 MEDIUM The system must be configured to collect multiple error reports of the same event type. Multiple error reports of the same error type are useful in diagnosing potential system configuration issues, as well as intrusion activity. This setting controls whether error reporting collects additional, second-level report data even if a CAB file containing data about the event types has already been collected.
SV-77995r1_rule WN10-ER-000030 CCI-001314 MEDIUM The system must be configured to prevent the display of error messages to the user. Displaying error messages to users provides them the option of sending the reports. Error reports should be sent silently, unknown to the user. This setting controls whether users are shown an error dialog box that lets them report an error.
SV-78009r1_rule WN10-AU-000500 CCI-001849 MEDIUM The Application event log size must be configured to 32768 KB or greater. Inadequate log size will cause the log to fill up quickly. This may prevent audit events from being recorded properly and require frequent attention by administrative personnel.
SV-78013r1_rule WN10-AU-000505 CCI-001849 MEDIUM The Security event log size must be configured to 196608 KB or greater. Inadequate log size will cause the log to fill up quickly. This may prevent audit events from being recorded properly and require frequent attention by administrative personnel.
SV-78015r1_rule WN10-ER-000040 CCI-002418 MEDIUM The system must be configured to use SSL to forward error reports. The use of SSL enables the secure forwarding of error reporting data from local systems to a reporting site.
SV-78017r1_rule WN10-AU-000510 CCI-001849 MEDIUM The System event log size must be configured to 32768 KB or greater. Inadequate log size will cause the log to fill up quickly. This may prevent audit events from being recorded properly and require frequent attention by administrative personnel.
SV-78019r1_rule WN10-ER-000045 CCI-000366 MEDIUM The system must be configured to send error reports on TCP port 1232. An error reporting site's TCP port must be defined in the local system in order to forward data from local systems via TCP. Port 1232 is the recommended port setting.
SV-78023r1_rule WN10-AU-000515 CCI-000162 MEDIUM Permissions for the Application event log must prevent access by non-privileged accounts. Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. The Application event log may be susceptible to tampering if proper permissions are not applied.
SV-78025r1_rule WN10-ER-000050 CCI-001312 MEDIUM The system must be configured to archive error reports. The error reporting archive is stored locally on the system, and is created after an error report has been sent to the local collector or DOD-wide collector (if defined). This creates a backup of the error reporting.
SV-78027r1_rule WN10-AU-000520 CCI-000162 MEDIUM Permissions for the Security event log must prevent access by non-privileged accounts. Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. The Security event log may disclose sensitive information or be susceptible to tampering if proper permissions are not applied.
SV-78029r1_rule WN10-ER-000055 CCI-001312 MEDIUM The system must be configured to store all data in the error report archive. The error reporting archive is stored locally on the system and is created after an error report has been sent to the local collector or DOD-wide collector (if defined). Storing all data, including memory contents, adds data that is very helpful in analyzing the errors.
SV-78031r1_rule WN10-AU-000525 CCI-000162 MEDIUM Permissions for the System event log must prevent access by non-privileged accounts. Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. The System event log may be susceptible to tampering if proper permissions are not applied.
SV-78033r1_rule WN10-ER-000060 CCI-001312 MEDIUM The maximum number of error reports to archive on a system must be configured to 100 or greater. The retention of archived reports provides a history. Older reports are automatically deleted as new reports are generated once the maximum limit has been met. The archive is stored locally on the system and is created after the error report has been sent to the local collector or DOD-wide collector (if defined).
SV-78037r1_rule WN10-ER-000065 CCI-001312 MEDIUM The system must be configured to queue error reports until a local or DOD-wide collector is available. Queueing error reports provides the ability for a system to collect reports locally or until a collection server can be contacted. Valuable system diagnostic and vulnerability information may be lost if the report queue is disabled.
SV-78039r1_rule WN10-CC-000010 CCI-000381 MEDIUM The display of slide shows on the lock screen must be disabled. Slide shows that are displayed on the lock screen could display sensitive information to unauthorized personnel. Turning off this feature will limit access to the information to a logged on user.
SV-78041r1_rule WN10-CC-000015 CCI-000366 MEDIUM Automatic logons must be disabled. Allowing a system to automatically log on when the machine is booted could give access to any unauthorized individual who restarts the computer. Automatic logon with administrator privileges would give full access to an unauthorized individual.
SV-78045r1_rule WN10-CC-000020 CCI-000366 MEDIUM IPv6 source routing must be configured to highest protection. Configuring the system to disable IPv6 source routing protects against spoofing.
SV-78047r1_rule WN10-ER-000070 CCI-001312 MEDIUM The system must be configured to add all error reports to the queue. Error reports are queued for sending to an error reporting site when the queueing behavior is set to Always Queue. This will maintain the reports in the queue until a connection can be made to the collection server.
SV-78049r1_rule WN10-CC-000025 CCI-000366 MEDIUM The system must be configured to prevent IP source routing. Configuring the system to disable IP source routing protects against spoofing.
SV-78051r1_rule WN10-ER-000075 CCI-001312 MEDIUM The maximum number of error reports to queue on a system must be configured to 50 or greater. The error reporting queue is stored locally on the system and contains the error reports until they have been manually removed or automatically sent to the local collector or DOD-wide collector (if defined). Once a report has been sent to a collector, it is moved to the report archive. Old reports are deleted as new ones arrive once the maximum limit has been met.
SV-78053r1_rule WN10-CC-000030 CCI-000366 LOW The system must be configured to prevent Internet Control Message Protocol (ICMP) redirects from overriding Open Shortest Path First (OSPF) generated routes. Allowing ICMP redirect of routes can lead to traffic not being routed properly. When disabled, this forces ICMP to be routed via shortest path first.
SV-78055r1_rule WN10-ER-000080 CCI-001312 MEDIUM The system must be configured to attempt to forward queued error reports once a day. Error reports stored in the queue should be forwarded to a local or DOD-wide collection site when the system can connect to the site. This setting controls the frequency a system will use to try forwarding queued reports to the local or DOD-wide collector.
SV-78057r1_rule WN10-CC-000035 CCI-002385 LOW The system must be configured to ignore NetBIOS name release requests except from WINS servers. Configuring the system to ignore name release requests, except from WINS servers, prevents a denial of service (DoS) attack. The DoS consists of sending a NetBIOS name release request to the server for each entry in the server's cache, causing a response delay in the normal operation of the servers WINS resolution capability.
SV-78059r1_rule WN10-CC-000040 CCI-000366 MEDIUM Insecure logons to an SMB server must be disabled. Insecure guest logons allow unauthenticated access to shared folders. Shared resources on a system must require authentication to establish proper access.
SV-78061r1_rule WN10-ER-000085 CCI-001312 MEDIUM The system must be configured to automatically consent to send all data requested by a local or DOD-wide error collection site. Configuring error reporting to send all requested data ensures all relevant data associated with the error report is captured for later analysis. This setting determines the default consent behavior of Windows Error Reporting.
SV-78063r1_rule WN10-CC-000045 CCI-000366 MEDIUM All Direct Access traffic must be routed through the internal network. Routing all Direct Access traffic through the internal network allows monitoring and prevents split tunneling.
SV-78065r1_rule WN10-ER-000090 CCI-001312 MEDIUM The system must be configured to permit the default consent levels of Windows Error Reporting to override any other consent policy setting. This setting determines the behavior of the "Configure Default Consent" setting in relation to custom consent settings. Enabling this allows the default consent levels of Windows Error Reporting to always override any other consent policy setting.
SV-78067r1_rule WN10-CC-000050 CCI-000366 MEDIUM Hardened UNC Paths must be defined to require mutual authentication and integrity for at least the \\*\SYSVOL and \\*\NETLOGON shares. Additional security requirements are applied to Universal Naming Convention (UNC) paths specified in Hardened UNC paths before allowing access them. This aids in preventing tampering with or spoofing of connections to these paths.
SV-78069r1_rule WN10-PK-000005 CCI-000185 MEDIUM The DoD Root Certificate must be installed into the Trusted Root Store. To ensure secure DoD websites and DoD-signed code are properly validated, the system must trust the DoD Root CA 2. The DoD root certificate will ensure that the trust chain is established for server certificates issued from the DoD CA.
SV-78071r1_rule WN10-CC-000055 CCI-000366 MEDIUM Simultaneous connections to the Internet or a Windows domain must be limited. Multiple network connections can provide additional attack vectors to a system and must be limited.
SV-78073r1_rule WN10-PK-000010 CCI-000185 MEDIUM The External CA Root Certificate must be installed into the Trusted Root Store. To ensure secure websites protected with ECA server certificates on NIPRNet are properly validated, the system must trust the ECA Root CA 2. The ECA root certificate will ensure the trust chain is established for server certificates issued from the External CA. This requirement only applies to NIPRNet systems.
SV-78075r1_rule WN10-CC-000060 CCI-000366 MEDIUM Connections to non-domain networks when connected to a domain authenticated network must be blocked. Multiple network connections can provide additional attack vectors to a system and should be limited. When connected to a domain, communication must go through the domain connection.
SV-78077r1_rule WN10-PK-000015 CCI-000185 MEDIUM The DoD Interoperability Root CA 1 to DoD Root CA 2 cross certificate must be installed into the Untrusted Certificates Store. To ensure users do not experience denial of service on NIPRNet when performing certificate-based authentication to DoD websites due to the system chaining to a root other than DoD Root CA 2, the DoD Interoperability Root CA 1 to DoD Root CA 2 cross certificate must be installed in the Untrusted Certificate Store. This requirement only applies to NIPRNet systems.
SV-78079r1_rule WN10-PK-000020 CCI-000185 MEDIUM The US DoD CCEB Interoperability Root CA 1 to DoD Root CA 2 cross-certificate must be installed into the Untrusted Certificates Store. To ensure users do not experience denial of service on NIPRNet when performing certificate-based authentication to DoD websites due to the system chaining to a root other than DoD Root CA 2, the US DoD CCEB Interoperability Root CA 1 to DoD Root CA 2 cross-certificate must be installed in the Untrusted Certificate Store. This requirement only applies to NIPRNet systems.
SV-78081r1_rule WN10-CC-000065 CCI-000366 MEDIUM Wi-Fi Sense must be disabled. Wi-Fi Sense automatically connects the system to known hotspots and networks that contacts have shared. It also allows the sharing of the system's known networks to contacts. Automatically connecting to hotspots and shared networks can expose a system to unsecured or potentially malicious systems.
SV-78087r1_rule WN10-RG-000010 CCI-001084 MEDIUM Local administrator accounts must have their privileged token filtered to prevent elevated privileges from being used over the network on domain systems. A compromised local administrator account can provide means for an attacker to move laterally between domain systems. With User Account Control enabled, filtering the privileged token for built-in administrator accounts will prevent the elevated privileges of these accounts from being used over the network.
SV-78097r1_rule WN10-CC-000085 CCI-000366 MEDIUM Early Launch Antimalware, Boot-Start Driver Initialization Policy must prevent boot drivers identified as bad. Compromised boot drivers can introduce malware prior to protection mechanisms that load after initialization. The Early Launch Antimalware driver can limit allowed drivers based on classifications determined by the malware protection application. At a minimum, drivers determined to be bad must not be allowed.
SV-78099r1_rule WN10-CC-000090 CCI-000366 MEDIUM Group Policy objects must be reprocessed even if they have not changed. Enabling this setting and then selecting the "Process even if the Group Policy objects have not changed" option ensures that the policies will be reprocessed even if none have been changed. This way, any unauthorized changes are forced to match the domain-based group policy settings again.
SV-78103r1_rule WN10-CC-000095 CCI-000366 MEDIUM Group Policies must be refreshed in the background if the user is logged on. If this setting is enabled, then Group Policy settings are not refreshed while a user is currently logged on. This could lead to instances when a user does not have the latest changes to a policy applied and is therefore operating in an insecure context.
SV-78105r1_rule WN10-CC-000100 CCI-000381 MEDIUM Downloading print driver packages over HTTP must be prevented. Some features may communicate with the vendor, sending system information or downloading data or components for the feature. Turning off this capability will prevent potentially sensitive information from being sent outside the enterprise and uncontrolled updates to the system. This setting prevents the computer from downloading print driver packages over HTTP.
SV-78107r1_rule WN10-SO-000015 CCI-000366 MEDIUM Local accounts with blank passwords must be restricted to prevent access from the network. An account without a password can allow unauthorized access to a system as only the username would be required. Password policies should prevent accounts with blank passwords from existing on a system. However, if a local account with a blank password did exist, enabling this setting will prevent network access, limiting the account to local console logon only.
SV-78111r1_rule WN10-CC-000105 CCI-000381 MEDIUM Web publishing and online ordering wizards must be prevented from downloading a list of providers. Some features may communicate with the vendor, sending system information or downloading data or components for the feature. Turning off this capability will prevent potentially sensitive information from being sent outside the enterprise and uncontrolled updates to the system. This setting prevents Windows from downloading a list of providers for the Web publishing and online ordering wizards.
SV-78113r1_rule WN10-CC-000110 CCI-000381 MEDIUM Printing over HTTP must be prevented. Some features may communicate with the vendor, sending system information or downloading data or components for the feature. Turning off this capability will prevent potentially sensitive information from being sent outside the enterprise and uncontrolled updates to the system. This setting prevents the client computer from printing over HTTP, which allows the computer to print to printers on the intranet as well as the Internet.
SV-78117r1_rule WN10-CC-000115 CCI-000366 MEDIUM Systems must at least attempt device authentication using certificates. Using certificates to authenticate devices to the domain provides increased security over passwords. By default systems will attempt to authenticate using certificates and fall back to passwords if the domain controller does not support certificates for devices. This may also be configured to always use certificates for device authentication.
SV-78119r1_rule WN10-CC-000120 CCI-000381 MEDIUM The network selection user interface (UI) must not be displayed on the logon screen. Enabling interaction with the network selection UI allows users to change connections to available networks without signing into Windows.
SV-78121r1_rule WN10-CC-000125 CCI-000381 MEDIUM Connected users on domain-joined computers must not be enumerated. The username is one part of logon credentials that could be used to gain access to a system. Preventing the enumeration of users limits this information to unauthorized personnel.
SV-78123r1_rule WN10-CC-000130 CCI-000381 MEDIUM Local users on domain-joined computers must not be enumerated. The username is one part of logon credentials that could be used to gain access to a system. Preventing the enumeration of users limits this information to authorized personnel.
SV-78125r1_rule WN10-SO-000030 CCI-000169 MEDIUM Audit policy using subcategories must be enabled. Maintaining an audit trail of system activity logs can help identify configuration errors, troubleshoot service disruptions, and analyze compromises that have occurred, as well as detect attacks. Audit logs are necessary to provide a trail of evidence in case the system or network is compromised. Collecting this data is essential for analyzing the security of information assets and detecting signs of suspicious and unexpected behavior. This setting allows administrators to enable more precise auditing capabilities.
SV-78127r1_rule WN10-CC-000135 CCI-000381 MEDIUM Signing in using a PIN must be turned off. Strong sign-on must be used to protect a system. The PIN feature is limited to 4 numbers and caches the domain password in the system vault.
SV-78129r1_rule WN10-SO-000035 CCI-002418 MEDIUM Outgoing secure channel traffic must be encrypted or signed. Requests sent on the secure channel are authenticated, and sensitive information (such as passwords) is encrypted, but not all information is encrypted. If this policy is enabled, outgoing secure channel traffic will be encrypted and signed.
SV-78131r1_rule WN10-CC-000140 CCI-000366 MEDIUM The system must be configured to block untrusted fonts from loading. Attackers may use fonts that include malicious code to compromise a system. This setting will prevent untrusted fonts, processed by the Graphics Device Interface (GDI), from loading if installed outside of the %windir%/Fonts directory.
SV-78133r1_rule WN10-SO-000040 CCI-002418 MEDIUM Outgoing secure channel traffic must be encrypted when possible. Requests sent on the secure channel are authenticated, and sensitive information (such as passwords) is encrypted, but not all information is encrypted. If this policy is enabled, outgoing secure channel traffic will be encrypted.
SV-78135r1_rule WN10-CC-000145 CCI-002038 MEDIUM Users must be prompted for a password on resume from sleep (on battery). Authentication must always be required when accessing a system. This setting ensures the user is prompted for a password on resume from sleep (on battery).
SV-78137r1_rule WN10-SO-000045 CCI-002418 MEDIUM Outgoing secure channel traffic must be signed when possible. Requests sent on the secure channel are authenticated, and sensitive information (such as passwords) is encrypted, but the channel is not integrity checked. If this policy is enabled, outgoing secure channel traffic will be signed.
SV-78139r1_rule WN10-CC-000150 CCI-002038 MEDIUM The user must be prompted for a password on resume from sleep (plugged in). Authentication must always be required when accessing a system. This setting ensures the user is prompted for a password on resume from sleep (plugged in).
SV-78141r1_rule WN10-CC-000155 CCI-001090 HIGH Solicited Remote Assistance must not be allowed. Remote assistance allows another user to view or take control of the local session of a user. Solicited assistance is help that is specifically requested by the local user. This may allow unauthorized parties access to the resources on the computer.
SV-78143r1_rule WN10-SO-000050 CCI-000366 LOW The computer account password must not be prevented from being reset. Computer account passwords are changed automatically on a regular basis. Disabling automatic password changes can make the system more vulnerable to malicious access. Frequent password changes can be a significant safeguard for your system. A new password for the computer account will be generated every 30 days.
SV-78145r1_rule WN10-CC-000160 CCI-001967 MEDIUM Client computers must be required to authenticate for RPC communication. Configuring RPC to require authentication to the RPC Endpoint Mapper will force clients to provide authentication before RPC communication is established.
SV-78147r1_rule WN10-CC-000165 CCI-001967 MEDIUM Unauthenticated RPC clients must be restricted from connecting to the RPC server. Configuring RPC to restrict unauthenticated RPC clients from connecting to the RPC server will prevent anonymous connections.
SV-78149r1_rule WN10-CC-000170 CCI-000366 LOW The setting to allow Microsoft accounts to be optional for modern style apps must be enabled. Control of credentials and the system must be maintained within the enterprise. Enabling this setting allows enterprise credentials to be used with modern style apps that support this, instead of Microsoft accounts.
SV-78151r1_rule WN10-SO-000055 CCI-000366 LOW The maximum age for machine account passwords must be configured to 30 days or less. Computer account passwords are changed automatically on a regular basis. This setting controls the maximum password age that a machine account may have. This setting must be set to no more than 30 days, ensuring the machine changes its password monthly.
SV-78153r1_rule WN10-CC-000175 CCI-000381 LOW The Application Compatibility Program Inventory must be prevented from collecting data and sending the information to Microsoft. Some features may communicate with the vendor, sending system information or downloading data or components for the feature. Turning off this capability will prevent potentially sensitive information from being sent outside the enterprise and uncontrolled updates to the system. This setting will prevent the Program Inventory from collecting data about a system and sending the information to Microsoft.
SV-78155r1_rule WN10-SO-000060 CCI-002418 MEDIUM The system must be configured to require a strong session key. A computer connecting to a domain controller will establish a secure channel. Requiring strong session keys enforces 128-bit encryption between systems.
SV-78157r1_rule WN10-CC-000180 CCI-001764 HIGH Autoplay must be turned off for non-volume devices. Allowing autoplay to execute may introduce malicious code to a system. Autoplay begins reading from a drive as soon as you insert media in the drive. As a result, the setup file of programs or music on audio media may start. This setting will disable autoplay for non-volume devices (such as Media Transfer Protocol (MTP) devices).
SV-78159r1_rule WN10-SO-000070 CCI-000057 MEDIUM The machine inactivity limit must be set to 15 minutes, locking the system with the screensaver. Unattended systems are susceptible to unauthorized use and should be locked when unattended. The screen saver should be set at a maximum of 15 minutes and be password protected. This protects critical and sensitive data from exposure to unauthorized personnel with physical access to the computer.
SV-78161r1_rule WN10-CC-000185 CCI-001764 HIGH The default autorun behavior must be configured to prevent autorun commands. Allowing autorun commands to execute may introduce malicious code to a system. Configuring this setting prevents autorun commands from executing.
SV-78163r1_rule WN10-CC-000190 CCI-001764 HIGH Autoplay must be disabled for all drives. Allowing autoplay to execute may introduce malicious code to a system. Autoplay begins reading from a drive as soon as you insert media in the drive. As a result, the setup file of programs or music on audio media may start. By default, autoplay is disabled on removable drives, such as the floppy disk drive (but not the CD-ROM drive) and on network drives. If you enable this policy, you can also disable autoplay on all drives.
SV-78165r1_rule WN10-SO-000075 CCI-000048 MEDIUM The required legal notice must be configured to display before console logon. Failure to display the logon banner prior to a logon attempt will negate legal proceedings resulting from unauthorized access to system resources.
SV-78167r1_rule WN10-CC-000195 CCI-000366 MEDIUM Enhanced anti-spoofing when available must be enabled for facial recognition. Enhanced anti-spoofing provides additional protections when using facial recognition with devices that support it.
SV-78169r1_rule WN10-CC-000200 CCI-001084 MEDIUM Administrator accounts must not be enumerated during elevation. Enumeration of administrator accounts when elevating can provide part of the logon information to an unauthorized user. This setting configures the system to always require users to type in a username and password to elevate a running application.
SV-78171r1_rule WN10-SO-000080 CCI-000048 LOW The Windows dialog box title for the legal banner must be configured. Failure to display the logon banner prior to a logon attempt will negate legal proceedings resulting from unauthorized access to system resources.
SV-78173r1_rule WN10-CC-000205 CCI-000366 MEDIUM Windows Telemetry must be configured to the lowest level of data sent to Microsoft. Some features may communicate with the vendor, sending system information or downloading data or components for the feature. Limiting this capability will prevent potentially sensitive information from being sent outside the enterprise.
SV-78175r1_rule WN10-CC-000210 CCI-000381 MEDIUM The Windows SmartScreen must be configured to require approval from an administrator before running downloaded unknown software. Windows SmartScreen helps protect systems from programs downloaded from the internet that may be malicious. Requiring administrator approval before running unknown software will prevent users from executing potentially malicious programs.
SV-78177r1_rule WN10-SO-000085 CCI-000366 LOW Caching of logon credentials must be limited. The default Windows configuration caches the last logon credentials for users who log on interactively to a system. This feature is provided for system availability reasons, such as the user's machine being disconnected from the network or domain controllers being unavailable. Even though the credential cache is well-protected, if a system is attacked, an unauthorized individual may isolate the password to a domain user account using a password-cracking program and gain access to the domain.
SV-78179r1_rule WN10-CC-000215 CCI-002824 MEDIUM Explorer Data Execution Prevention must be enabled. Data Execution Prevention (DEP) provides additional protection by performing checks on memory to help prevent malicious code from running. This setting will prevent Data Execution Prevention from being turned off for File Explorer.
SV-78181r1_rule WN10-CC-000220 CCI-002385 LOW Turning off File Explorer heap termination on corruption must be disabled. Legacy plug-in applications may continue to function when a File Explorer session has become corrupt. Disabling this feature will prevent this.
SV-78183r1_rule WN10-SO-000090 CCI-000366 LOW Domain Controller authentication must not be required to unlock the workstation. This setting controls the behavior of the system when there is an attempt to unlock the workstation. If this setting is enabled, the system will pass the credentials to the domain controller (if in a domain) for authentication before allowing the system to be unlocked. This may cause a denial of service if the workstation loses connectivity to the domain controller.
SV-78185r1_rule WN10-CC-000225 CCI-000366 MEDIUM File Explorer shell protocol must run in protected mode. The shell protocol will limit the set of folders applications can open when run in protected mode. Restricting files an application can open, to a limited set of folders, increases the security of Windows.
SV-78187r1_rule WN10-SO-000095 CCI-000366 MEDIUM The Smart Card removal option must be configured to Force Logoff or Lock Workstation. Unattended systems are susceptible to unauthorized use and must be locked. Configuring a system to lock when a smart card is removed will ensure the system is inaccessible when unattended.
SV-78189r1_rule WN10-CC-000230 CCI-000366 MEDIUM Users must not be allowed to ignore SmartScreen filter warnings for malicious websites in Microsoft Edge. The SmartScreen filter in Microsoft Edge provides warning messages and blocks potentially malicious websites and file downloads. If users are allowed to ignore warnings from the SmartScreen filter they could still access malicious websites.
SV-78191r1_rule WN10-CC-000235 CCI-000366 MEDIUM Users must not be allowed to ignore SmartScreen filter warnings for unverified files in Microsoft Edge. The SmartScreen filter in Microsoft Edge provides warning messages and blocks potentially malicious websites and file downloads. If users are allowed to ignore warnings from the SmartScreen filter they could still download potentially malicious files.
SV-78193r1_rule WN10-SO-000100 CCI-002418 MEDIUM The Windows SMB client must be configured to always perform SMB packet signing. The server message block (SMB) protocol provides the basis for many network operations. Digitally signed SMB packets aid in preventing man-in-the-middle attacks. If this policy is enabled, the SMB client will only communicate with an SMB server that performs SMB packet signing.
SV-78195r1_rule WN10-CC-000240 CCI-000366 MEDIUM InPrivate browsing in Microsoft Edge must be disabled. The InPrivate browsing feature in Microsoft Edge prevents the storing of history, cookies, temporary Internet files, or other data. Disabling this feature maintains this data for review as necessary.
SV-78197r1_rule WN10-SO-000105 CCI-002418 MEDIUM The Windows SMB client must be enabled to perform SMB packet signing when possible. The server message block (SMB) protocol provides the basis for many network operations. If this policy is enabled, the SMB client will request packet signing when communicating with an SMB server that is enabled or required to perform SMB packet signing.
SV-78199r1_rule WN10-CC-000245 CCI-000366 MEDIUM The password manager function in the Edge browser must be disabled. Passwords save locally for re-use when browsing may be subject to compromise. Disabling the Edge password manager will prevent this for the browser.
SV-78201r1_rule WN10-SO-000110 CCI-000197 MEDIUM Unencrypted passwords must not be sent to third-party SMB Servers. Some non-Microsoft SMB servers only support unencrypted (plain text) password authentication. Sending plain text passwords across the network, when authenticating to an SMB server, reduces the overall security of the environment. Check with the vendor of the SMB server to see if there is a way to support encrypted password authentication.
SV-78203r1_rule WN10-CC-000250 CCI-000366 MEDIUM The SmartScreen filter for Microsoft Edge must be enabled. The SmartScreen filter in Microsoft Edge provides warning messages and blocks potentially malicious websites.
SV-78205r1_rule WN10-SO-000115 CCI-001133 LOW The amount of idle time required before suspending a session must be configured to 15 minutes or less. Open sessions can increase the avenues of attack on a system. This setting is used to control when a computer disconnects an inactive SMB session. If client activity resumes, the session is automatically re-established. This protects critical and sensitive network data from exposure to unauthorized personnel with physical access to the computer.
SV-78207r1_rule WN10-CC-000255 CCI-000366 MEDIUM The use of a hardware security device with Microsoft Passport for Work must be enabled. The use of a Trusted Platform Module (TPM) to store keys for Microsoft Passport for Work provides additional security. Keys stored in the TPM may only be used on that system while keys stored using software are more susceptible to compromise and could be used on other systems.
SV-78209r1_rule WN10-SO-000120 CCI-002418 MEDIUM The Windows SMB server must be configured to always perform SMB packet signing. The server message block (SMB) protocol provides the basis for many network operations. Digitally signed SMB packets aid in preventing man-in-the-middle attacks. If this policy is enabled, the SMB server will only communicate with an SMB client that performs SMB packet signing.
SV-78211r1_rule WN10-CC-000260 CCI-000366 MEDIUM The minimum pin length for Microsoft Passport for Work must be 6 characters or greater. Microsoft Passport for Work allows the use of PINs as well as biometrics for authentication without the sending a password to a network or website where it could be compromised. Longer minimum PIN lengths increase the available combinations an attacker would have to attempt. Shorter minimum length significantly reduces the strength.
SV-78213r1_rule WN10-SO-000125 CCI-002418 MEDIUM The Windows SMB server must perform SMB packet signing when possible. The server message block (SMB) protocol provides the basis for many network operations. Digitally signed SMB packets aid in preventing man-in-the-middle attacks. If this policy is enabled, the SMB server will negotiate SMB packet signing as requested by the client.
SV-78215r1_rule WN10-CC-000265 CCI-000381 MEDIUM The use of OneDrive for storage must be disabled. OneDrive provides access to external services for data storage which must not be used. Enabling this setting will prevent such access from the OneDrive app, as well as from File Explorer.
SV-78217r1_rule WN10-SO-000130 CCI-001133 LOW Users must be forcibly disconnected when their logon hours expire. Users must not be permitted to remain logged on to the network after they have exceeded their permitted logon hours. In many cases, this indicates that a user forgot to log off before leaving for the day. However, it may also indicate that a user is attempting unauthorized access at a time when the system may be less closely monitored. Forcibly disconnecting users when logon hours expire protects critical and sensitive network data from exposure to unauthorized personnel with physical access to the computer.
SV-78219r1_rule WN10-CC-000270 CCI-002038 MEDIUM Passwords must not be saved in the Remote Desktop Client. Saving passwords in the Remote Desktop Client could allow an unauthorized user to establish a remote desktop session to another system. The system must be configured to prevent users from saving passwords in the Remote Desktop Client.
SV-78221r1_rule WN10-CC-000275 CCI-001090 MEDIUM Local drives must be prevented from sharing with Remote Desktop Session Hosts. Preventing users from sharing the local drives on their client computers to Remote Session Hosts that they access helps reduce possible exposure of sensitive data.
SV-78223r1_rule WN10-CC-000280 CCI-002038 MEDIUM Remote Desktop Services must always prompt a client for passwords upon connection. This setting controls the ability of users to supply passwords automatically as part of their remote desktop connection. Disabling this setting would allow anyone to use the stored credentials in a connection item to connect to the terminal server.
SV-78225r1_rule WN10-SO-000135 CCI-000366 MEDIUM The service principal name (SPN) target name validation level must be configured to Accept if provided by client. If a service principle name (SPN) is provided by the client, it is validated against the server's list of SPNs, aiding in the prevention of spoofing.
SV-78227r1_rule WN10-CC-000285 CCI-001453 MEDIUM The Remote Desktop Session Host must require secure RPC communications. Allowing unsecure RPC communication exposes the system to man in the middle attacks and data disclosure attacks. A man in the middle attack occurs when an intruder captures packets between a client and server and modifies them before allowing the packets to be exchanged. Usually the attacker will modify the information in the packets in an attempt to cause either the client or server to reveal sensitive information.
SV-78231r1_rule WN10-CC-000290 CCI-000068 MEDIUM Remote Desktop Services must be configured with the client connection encryption set to the required level. Remote connections must be encrypted to prevent interception of data or sensitive information. Selecting "High Level" will ensure encryption of Remote Desktop Services sessions in both directions.
SV-78233r1_rule WN10-CC-000295 CCI-000366 MEDIUM Attachments must be prevented from being downloaded from RSS feeds. Attachments from RSS feeds may not be secure. This setting will prevent attachments from being downloaded from RSS feeds.
SV-78235r1_rule WN10-SO-000145 CCI-000366 HIGH Anonymous enumeration of SAM accounts must not be allowed. Anonymous enumeration of SAM accounts allows anonymous log on users (null session connections) to list all accounts names, thus providing a list of potential points to attack the system.
SV-78237r1_rule WN10-CC-000300 CCI-000381 MEDIUM Basic authentication for RSS feeds over HTTP must not be used. Basic authentication uses plain text passwords that could be used to compromise a system.
SV-78239r1_rule WN10-SO-000150 CCI-001090 HIGH Anonymous enumeration of shares must be restricted. Allowing anonymous logon users (null session connections) to list all account names and enumerate all shared resources can provide a map of potential points to attack the system.
SV-78241r1_rule WN10-CC-000305 CCI-000381 MEDIUM Indexing of encrypted files must be turned off. Indexing of encrypted files may expose sensitive data. This setting prevents encrypted files from being indexed.
SV-78243r1_rule WN10-SO-000155 CCI-002038 MEDIUM The system must be configured to prevent the storage of passwords and credentials. This setting controls the storage of passwords and credentials for network authentication on the local system. Such credentials must not be stored on the local machine as that may lead to account compromise.
SV-78245r1_rule WN10-SO-000160 CCI-000366 MEDIUM The system must be configured to prevent anonymous users from having the same rights as the Everyone group. Access by anonymous users must be restricted. If this setting is enabled, then anonymous users have the same rights and permissions as the built-in Everyone group. Anonymous users must not have these permissions or rights.
SV-78249r1_rule WN10-SO-000165 CCI-001090 HIGH Anonymous access to Named Pipes and Shares must be restricted. Allowing anonymous access to named pipes or shares provides the potential for unauthorized system access. This setting restricts access to those defined in "Network access: Named Pipes that can be accessed anonymously" and "Network access: Shares that can be accessed anonymously", both of which must be blank under other requirements.
SV-78251r1_rule WN10-SO-000170 CCI-001090 MEDIUM The system must be configured to use the Classic security model. Windows includes two network-sharing security models - Classic and Guest only. With the Classic model, local accounts must be password protected; otherwise, anyone can use guest user accounts to access shared system resources.
SV-78253r1_rule WN10-SO-000175 CCI-000778 MEDIUM Services using Local System that use Negotiate when reverting to NTLM authentication must use the computer identity vs. authenticating anonymously. Services using Local System that use Negotiate when reverting to NTLM authentication may gain unauthorized access if allowed to authenticate anonymously vs. using the computer identity.
SV-78255r1_rule WN10-SO-000180 CCI-000366 MEDIUM NTLM must be prevented from falling back to a Null session. NTLM sessions that are allowed to fall back to Null (unauthenticated) sessions may gain unauthorized access.
SV-78257r1_rule WN10-SO-000185 CCI-000366 MEDIUM PKU2U authentication using online identities must be prevented. PKU2U is a peer-to-peer authentication protocol. This setting prevents online identities from authenticating to domain-joined systems. Authentication will be centrally managed with Windows user accounts.
SV-78285r1_rule WN10-SO-000190 CCI-000803 MEDIUM Kerberos encryption types must be configured to prevent the use of DES and RC4 encryption suites. Certain encryption types are no longer considered secure. This setting configures a minimum encryption type for Kerberos, preventing the use of the DES and RC4 encryption suites.
SV-78287r1_rule WN10-SO-000195 CCI-000196 HIGH The system must be configured to prevent the storage of the LAN Manager hash of passwords. The LAN Manager hash uses a weak encryption algorithm and there are several tools available that use this hash to retrieve account passwords. This setting controls whether or not a LAN Manager hash of the password is stored in the SAM the next time the password is changed.
SV-78289r1_rule WN10-SO-000200 CCI-001133 MEDIUM The system must be configured to force users to log off when their allowed logon hours expire. Limiting logon hours can help protect data by only allowing access during specified times. This setting controls whether or not users are forced to log off when their allowed logon hours expire. If logon hours are set for users, then this must be enforced.
SV-78291r1_rule WN10-SO-000205 CCI-000366 HIGH The LanMan authentication level must be set to send NTLMv2 response only, and to refuse LM and NTLM. The Kerberos v5 authentication protocol is the default for authentication of users who are logging on to domain accounts. NTLM, which is less secure, is retained in later Windows versions for compatibility with clients and servers that are running earlier versions of Windows or applications that still use it. It is also used to authenticate logons to stand-alone computers that are running later versions.
SV-78293r1_rule WN10-SO-000210 CCI-000366 MEDIUM The system must be configured to the required LDAP client signing level. This setting controls the signing requirements for LDAP clients. This setting must be set to Negotiate signing or Require signing, depending on the environment and type of LDAP server in use.
SV-78295r1_rule WN10-SO-000215 CCI-000366 MEDIUM The system must be configured to meet the minimum session security requirement for NTLM SSP based clients. Microsoft has implemented a variety of security support providers for use with RPC sessions. All of the options must be enabled to ensure the maximum security level.
SV-78297r1_rule WN10-SO-000220 CCI-000366 MEDIUM The system must be configured to meet the minimum session security requirement for NTLM SSP based servers. Microsoft has implemented a variety of security support providers for use with RPC sessions. All of the options must be enabled to ensure the maximum security level.
SV-78299r1_rule WN10-SO-000225 CCI-000366 HIGH The Recovery Console option must be set to prevent automatic logon to the system. If this option is enabled, the Recovery Console does not require a password and automatically logs on to the system. This could allow unauthorized administrative access to the system.
SV-78301r1_rule WN10-SO-000230 CCI-002450 MEDIUM The system must be configured to use FIPS-compliant algorithms for encryption, hashing, and signing. This setting ensures that the system uses algorithms that are FIPS-compliant for encryption, hashing, and signing. FIPS-compliant algorithms meet specific standards established by the U.S. Government and must be the algorithms used for all OS encryption functions.
SV-78303r1_rule WN10-SO-000235 CCI-000366 MEDIUM The system must be configured to require case insensitivity for non-Windows subsystems. This setting controls the behavior of non-Windows subsystems when dealing with the case of arguments or commands. Case sensitivity could lead to the access of files or commands that must be restricted. To prevent this from happening, case insensitivity restrictions must be required.
SV-78305r1_rule WN10-SO-000240 CCI-000366 LOW The default permissions of global system objects must be increased. Windows systems maintain a global list of shared system resources such as DOS device names, mutexes, and semaphores. Each type of object is created with a default DACL that specifies who can access the objects with what permissions. If this policy is enabled, the default DACL is stronger, allowing non-admin users to read shared objects, but not modify shared objects that they did not create.
SV-78307r1_rule WN10-SO-000245 CCI-002038 MEDIUM User Account Control approval mode for the built-in Administrator must be enabled. User Account Control (UAC) is a security mechanism for limiting the elevation of privileges, including administrative accounts, unless authorized. This setting configures the built-in Administrator account so that it runs in Admin Approval Mode.
SV-78309r1_rule WN10-SO-000250 CCI-001084 MEDIUM User Account Control must, at minimum, prompt administrators for consent on the secure desktop. User Account Control (UAC) is a security mechanism for limiting the elevation of privileges, including administrative accounts, unless authorized. This setting configures the elevation requirements for logged on administrators to complete a task that requires raised privileges.
SV-78311r1_rule WN10-SO-000255 CCI-002038 MEDIUM User Account Control must automatically deny elevation requests for standard users. User Account Control (UAC) is a security mechanism for limiting the elevation of privileges, including administrative accounts, unless authorized. Denying elevation requests from standard user accounts requires tasks that need elevation to be initiated by accounts with administrative privileges. This ensures correct accounts are used on the system for privileged tasks to help mitigate credential theft.
SV-78315r1_rule WN10-SO-000260 CCI-001084 MEDIUM User Account Control must be configured to detect application installations and prompt for elevation. User Account Control (UAC) is a security mechanism for limiting the elevation of privileges, including administrative accounts, unless authorized. This setting requires Windows to respond to application installation requests by prompting for credentials.
SV-78317r1_rule WN10-SO-000265 CCI-001084 MEDIUM User Account Control must only elevate UIAccess applications that are installed in secure locations. User Account Control (UAC) is a security mechanism for limiting the elevation of privileges, including administrative accounts, unless authorized. This setting configures Windows to only allow applications installed in a secure location on the file system, such as the Program Files or the Windows\System32 folders, to run with elevated privileges.
SV-78319r1_rule WN10-SO-000270 CCI-002038 MEDIUM User Account Control must run all administrators in Admin Approval Mode, enabling UAC. User Account Control (UAC) is a security mechanism for limiting the elevation of privileges, including administrative accounts, unless authorized. This setting enables UAC.
SV-78321r1_rule WN10-SO-000275 CCI-001084 MEDIUM User Account Control must virtualize file and registry write failures to per-user locations. User Account Control (UAC) is a security mechanism for limiting the elevation of privileges, including administrative accounts, unless authorized. This setting configures non-UAC compliant applications to run in virtualized file and registry entries in per-user locations, allowing them to run.
SV-78333r1_rule WN10-UR-000005 CCI-002235 MEDIUM The Access Credential Manager as a trusted caller user right must not be assigned to any groups or accounts. Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. Accounts with the "Access Credential Manager as a trusted caller" user right may be able to retrieve the credentials of other accounts from Credential Manager.
SV-78335r1_rule WN10-UR-000010 CCI-000213 MEDIUM The Access this computer from the network user right must only be assigned to the Administrators group. Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. Accounts with the "Access this computer from the network" user right may access resources on the system, and must be limited to those that require it.
SV-78337r1_rule WN10-UR-000015 CCI-002235 HIGH The Act as part of the operating system user right must not be assigned to any groups or accounts. Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. Accounts with the "Act as part of the operating system" user right can assume the identity of any user and gain access to resources that user is authorized to access. Any accounts with this right can take complete control of a system.
SV-78339r1_rule WN10-UR-000020 CCI-002235 MEDIUM The Adjust memory quotas for a process user right must only be assigned to Administrators, Local Service, and Network Service. Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. Accounts with the "Adjust memory quotas for a process" user right can adjust memory that is available to processes, and could be used in a denial of service (DoS) attack.
SV-78341r1_rule WN10-UR-000025 CCI-000213 MEDIUM The Allow log on locally user right must only be assigned to the Administrators and Users groups. Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. Accounts with the "Allow log on locally" user right can log on interactively to a system.
SV-78343r1_rule WN10-UR-000030 CCI-002235 MEDIUM The Back up files and directories user right must only be assigned to the Administrators group. Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. Accounts with the "Back up files and directories" user right can circumvent file and directory permissions and could allow access to sensitive data."
SV-78345r1_rule WN10-UR-000035 CCI-002235 MEDIUM The Change the system time user right must only be assigned to Administrators and Local Service. Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. Accounts with the "Change the system time" user right can change the system time, which can impact authentication, as well as affect time stamps on event log entries.
SV-78347r1_rule WN10-UR-000040 CCI-002235 MEDIUM The Create a pagefile user right must only be assigned to the Administrators group. Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. Accounts with the "Create a pagefile" user right can change the size of a pagefile, which could affect system performance.
SV-78349r1_rule WN10-UR-000045 CCI-002235 HIGH The Create a token object user right must not be assigned to any groups or accounts. Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. The "Create a token object" user right allows a process to create an access token. This could be used to provide elevated rights and compromise a system.
SV-78351r1_rule WN10-UR-000050 CCI-002235 MEDIUM The Create global objects user right must only be assigned to Administrators, Service, Local Service, and Network Service. Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. Accounts with the "Create global objects" user right can create objects that are available to all sessions, which could affect processes in other users' sessions.
SV-78353r1_rule WN10-UR-000055 CCI-002235 MEDIUM The Create permanent shared objects user right must not be assigned to any groups or accounts. Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. Accounts with the "Create permanent shared objects" user right could expose sensitive data by creating shared objects.
SV-78355r1_rule WN10-UR-000060 CCI-002235 MEDIUM The Create symbolic links user right must only be assigned to the Administrators group. Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. Accounts with the "Create symbolic links" user right can create pointers to other objects, which could potentially expose the system to attack.
SV-78359r1_rule WN10-UR-000065 CCI-002235 HIGH The Debug programs user right must only be assigned to the Administrators group. Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. Accounts with the "Debug Programs" user right can attach a debugger to any process or to the kernel, providing complete access to sensitive and critical operating system components. This right is given to Administrators in the default configuration.
SV-78371r1_rule WN10-UR-000095 CCI-002235 MEDIUM The Enable computer and user accounts to be trusted for delegation user right must not be assigned to any groups or accounts. Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. The "Enable computer and user accounts to be trusted for delegation" user right allows the "Trusted for Delegation" setting to be changed. This could potentially allow unauthorized users to impersonate other users.
SV-78373r1_rule WN10-UR-000100 CCI-002235 MEDIUM The Force shutdown from a remote system user right must only be assigned to the Administrators group. Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. Accounts with the "Force shutdown from a remote system" user right can remotely shut down a system which could result in a DoS.
SV-78377r1_rule WN10-UR-000105 CCI-002235 MEDIUM The Generate security audits user right must only be assigned to Local Service and Network Service. Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. The "Generate security audits" user right specifies users and processes that can generate Security Log audit records, which must only be the system service accounts defined.
SV-78379r1_rule WN10-UR-000110 CCI-002235 MEDIUM The Impersonate a client after authentication user right must only be assigned to Administrators, Service, Local Service, and Network Service. Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. The "Impersonate a client after authentication" user right allows a program to impersonate another user or account to run on their behalf. An attacker could potentially use this to elevate privileges.
SV-78381r1_rule WN10-UR-000115 CCI-002235 MEDIUM The Increase scheduling priority user right must only be assigned to the Administrators group. Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. Accounts with the "Increase scheduling priority" user right can change a scheduling priority causing performance issues or a DoS.
SV-78407r1_rule WN10-UR-000120 CCI-002235 MEDIUM The Load and unload device drivers user right must only be assigned to the Administrators group. Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. The "Load and unload device drivers" user right allows device drivers to dynamically be loaded on a system by a user. This could potentially be used to install malicious code by an attacker.
SV-78415r1_rule WN10-UR-000125 CCI-002235 MEDIUM The Lock pages in memory user right must not be assigned to any groups or accounts. Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. The "Lock pages in memory" user right allows physical memory to be assigned to processes, which could cause performance issues or a DoS.
SV-78417r1_rule WN10-UR-000130 CCI-000162 MEDIUM The Manage auditing and security log user right must only be assigned to the Administrators group. Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. Accounts with the "Manage auditing and security log" user right can manage the security log and change auditing configurations. This could be used to clear evidence of tampering.
SV-78419r1_rule WN10-UR-000135 CCI-002235 MEDIUM The Modify an object label user right must not be assigned to any groups or accounts. Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. Accounts with the "Modify an object label" user right can change the integrity label of an object. This could potentially be used to execute code at a higher privilege.
SV-78421r1_rule WN10-UR-000140 CCI-002235 MEDIUM The Modify firmware environment values user right must only be assigned to the Administrators group. Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. Accounts with the "Modify firmware environment values" user right can change hardware configuration environment variables. This could result in hardware failures or a DoS.
SV-78423r1_rule WN10-UR-000145 CCI-002235 MEDIUM The Perform volume maintenance tasks user right must only be assigned to the Administrators group. Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. Accounts with the "Perform volume maintenance tasks" user right can manage volume and disk configurations. They could potentially delete volumes, resulting in, data loss or a DoS.
SV-78425r1_rule WN10-UR-000150 CCI-002235 MEDIUM The Profile single process user right must only be assigned to the Administrators group. Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. Accounts with the "Profile single process" user right can monitor non-system processes performance. An attacker could potentially use this to identify processes to attack.
SV-78427r1_rule WN10-UR-000155 CCI-002235 MEDIUM The Replace a process level token user right must only be assigned to Local Service and Network Service. Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. The "Replace a process level token" user right allows one process or service to start another process or service with a different security access token. A user with this right could use this to impersonate another account.
SV-78429r1_rule WN10-UR-000160 CCI-002235 MEDIUM The Restore files and directories user right must only be assigned to the Administrators group. Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. Accounts with the "Restore files and directories" user right can circumvent file and directory permissions and could allow access to sensitive data. It could also be used to over-write more current data.
SV-78431r1_rule WN10-UR-000165 CCI-002235 MEDIUM The Take ownership of files or other objects user right must only be assigned to the Administrators group. Inappropriate granting of user rights can provide system, administrative, and other high level capabilities. Accounts with the "Take ownership of files or other objects" user right can take ownership of objects and make changes.