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Standard user accounts must only have Read permissions to the Winlogon registry key.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-26070 | 2.023 | SV-33310r3_rule | High |
| Description |
|---|
| Permissions on the Winlogon registry key must only allow privileged accounts to change registry values. If standard users have this capability there is a potential for programs to run with elevated privileges when a privileged user logs on to the system. |
| STIG | Date |
|---|---|
| Windows Server 2008 R2 Member Server Security Technical Implementation Guide | 2017-06-09 |
Details
| Check Text ( C-74013r2_chk ) |
|---|
| Run "Regedit". Navigate to the following registry key: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\ Right-click on "WinLogon" and select "Permissions…". Select "Advanced". If the permissions are not as restrictive as the defaults listed below, this is a finding. The following are the same for each permission listed: Type - Allow Inherited from - MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion Apply to - This key and subkeys Columns: Name - Permission TrustedInstaller - Full Control SYSTEM - Full Control Administrators - Full Control Users - Read |
| Fix Text (F-80409r1_fix) |
|---|
| Maintain permissions at least as restrictive as the defaults listed below for the "WinLogon" registry key. It is recommended to not change the permissions from the defaults. HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\ The following are the same for each permission listed: Type - Allow Inherited from - MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion Apply to - This key and subkeys Columns: Name - Permission TrustedInstaller - Full Control SYSTEM - Full Control Administrators - Full Control Users - Read |