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-33308r3_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 2008 Member Server Security Technical Implementation Guide	2019-06-18

Details

Check Text ( C-74021r2_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 Columns: Name - Permission - Apply to Users - Read - This key and subkeys Administrators - Full Control - This key and subkeys SYSTEM - Full Control - This key and subkeys CREATOR OWNER - Special - Subkeys only (Special = Full Control)

Check Text ( C-74021r2_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

Columns: Name - Permission - Apply to
Users - Read - This key and subkeys
Administrators - Full Control - This key and subkeys
SYSTEM - Full Control - This key and subkeys
CREATOR OWNER - Special - Subkeys only
(Special = Full Control)

Fix Text (F-80417r1_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 Columns: Name - Permission - Apply to Users - Read - This key and subkeys Administrators - Full Control - This key and subkeys SYSTEM - Full Control - This key and subkeys CREATOR OWNER - Special - Subkeys only (Special = Full Control)

Fix Text (F-80417r1_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

Columns: Name - Permission - Apply to
Users - Read - This key and subkeys
Administrators - Full Control - This key and subkeys
SYSTEM - Full Control - This key and subkeys
CREATOR OWNER - Special - Subkeys only
(Special = Full Control)