Microsoft Windows Server 2019 Security Technical Implementation Guide
Rules, Groups, and Values defined within the XCCDF Benchmark
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Windows Server 2019 local administrator accounts must have their privileged token filtered to prevent elevated privileges from being used over the network on domain-joined member servers.
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 local ad...Rule Medium Severity -
Windows Server 2019 UIAccess applications must not be allowed to prompt for elevation without using the secure desktop.
User Account Control (UAC) is a security mechanism for limiting the elevation of privileges, including administrative accounts, unless authorized. This setting prevents User Interface Accessibility...Rule Medium Severity -
Windows Server 2019 User Account Control must, at a 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...Rule Medium Severity -
Windows Server 2019 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 applic...Rule Medium Severity -
Windows Server 2019 User Account Control (UAC) must only elevate UIAccess applications that are installed in secure locations.
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...Rule Medium Severity -
Windows Server 2019 Remote Desktop Services must prevent drive redirection.
Preventing users from sharing the local drives on their client computers with Remote Session Hosts that they access helps reduce possible exposure of sensitive data.Rule Medium Severity -
Windows Server 2019 data files owned by users must be on a different logical partition from the directory server data files.
When directory service data files, especially for directories used for identification, authentication, or authorization, reside on the same logical partition as user-owned files, the directory serv...Rule Medium Severity -
Windows Server 2019 must not allow anonymous enumeration of shares.
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.Rule High Severity -
Windows Server 2019 directory service must be configured to terminate LDAP-based network connections to the directory server after five minutes of inactivity.
The failure to terminate inactive network connections increases the risk of a successful attack on the directory server. The longer an established session is in progress, the more time an attacker ...Rule Low Severity -
Windows Server 2019 must employ automated mechanisms to determine the state of system components with regard to flaw remediation using the following frequency: continuously, where Endpoint Security Solution (ESS) is used; 30 days, for any additional internal network scans not covered by ESS; and annually, for external scans by Computer Network Defense Service Provider (CNDSP).
Without the use of automated mechanisms to scan for security flaws on a continuous and/or periodic basis, the operating system or other system components may remain vulnerable to the exploits prese...Rule Medium Severity -
Windows Server 2019 must be configured to audit Logon/Logoff - Account Lockout failures.
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. A...Rule Medium Severity -
Windows Server 2019 Deny log on through Remote Desktop Services user right on domain controllers must be configured to prevent unauthenticated access.
Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. The "Deny log on through Remote Desktop Services" user right defines the accounts that ...Rule Medium Severity -
Windows Server 2019 Active Directory Group Policy objects must have proper access control permissions.
When directory service database objects do not have appropriate access control permissions, it may be possible for malicious users to create, read, update, or delete the objects and degrade or dest...Rule High Severity -
Windows Server 2019 Active Directory Domain Controllers Organizational Unit (OU) object must have the proper access control permissions.
When Active Directory objects do not have appropriate access control permissions, it may be possible for malicious users to create, read, update, or delete the objects and degrade or destroy the in...Rule High Severity -
Windows Server 2019 must restrict remote calls to the Security Account Manager (SAM) to Administrators on domain-joined member servers and standalone or nondomain-joined systems.
The Windows SAM stores users' passwords. Restricting Remote Procedure Call (RPC) connections to the SAM to Administrators helps protect those credentials.Rule Medium Severity -
Windows Server 2019 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...Rule High Severity -
Windows Server 2019 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 objec...Rule Medium Severity -
Windows Server 2019 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 genera...Rule Medium Severity -
Windows Server 2019 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 d...Rule Medium Severity -
Windows Server 2019 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 di...Rule Medium Severity
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