STIGQter: STIG Summary: Windows Server 2012/2012 R2 Domain Controller Security Technical Implementation Guide Version: 2 Release: 19 Benchmark Date: 24 Jan 2020: The Active Directory SYSVOL directory must have the proper access control permissions.

DISA Rule

SV-51176r2_rule

Vulnerability Number

V-39331

Group Title

WINAD-000002-DC

Rule Version

WN12-AD-000002-DC

Severity

CAT I

CCI(s)

• CCI-002235 - The information system prevents non-privileged users from executing privileged functions to include disabling, circumventing, or altering implemented security safeguards/countermeasures.

Weight

10

Fix Recommendation

Ensure the permissions on SYSVOL directory do not allow greater than read & execute for standard user accounts or groups. The defaults below meet this requirement.

Type - Allow
Principal - Authenticated Users
Access - Read & execute
Inherited from - None
Applies to - This folder, subfolder and files

Type - Allow
Principal - Server Operators
Access - Read & execute
Inherited from - None
Applies to - This folder, subfolder and files

Type - Allow
Principal - Administrators
Access - Special
Inherited from - None
Applies to - This folder only
(Access - Special - Basic Permissions: all selected except Full control)

Type - Allow
Principal - CREATOR OWNER
Access - Full control
Inherited from - None
Applies to - Subfolders and files only

Type - Allow
Principal - Administrators
Access - Full control
Inherited from - None
Applies to - Subfolders and files only

Type - Allow
Principal - SYSTEM
Access - Full control
Inherited from - None
Applies to - This folder, subfolders and files

Check Contents

Verify the permissions on the SYSVOL directory.

Open a command prompt.
Run "net share".
Make note of the directory location of the SYSVOL share.

By default this will be \Windows\SYSVOL\sysvol. For this requirement, permissions will be verified at the first SYSVOL directory level.

Open File Explorer.
Navigate to \Windows\SYSVOL (or the directory noted previously if different).
Right click the directory and select properties.
Select the Security tab.
Click Advanced.

If any standard user accounts or groups have greater than read & execute permissions, this is a finding. The default permissions noted below meet this requirement.

Type - Allow
Principal - Authenticated Users
Access - Read & execute
Inherited from - None
Applies to - This folder, subfolder and files

Type - Allow
Principal - Server Operators
Access - Read & execute
Inherited from - None
Applies to - This folder, subfolder and files

Type - Allow
Principal - Administrators
Access - Special
Inherited from - None
Applies to - This folder only
(Access - Special - Basic Permissions: all selected except Full control)

Type - Allow
Principal - CREATOR OWNER
Access - Full control
Inherited from - None
Applies to - Subfolders and files only

Type - Allow
Principal - Administrators
Access - Full control
Inherited from - None
Applies to - Subfolders and files only

Type - Allow
Principal - SYSTEM
Access - Full control
Inherited from - None
Applies to - This folder, subfolders and files


Alternately, use Icacls.exe to view the permissions of the SYSVOL directory.
Open a command prompt.
Run "icacls c:\Windows\SYSVOL
The following results should be displayed:

NT AUTHORITY\Authenticated Users:(RX)
NT AUTHORITY\Authenticated Users:(OI)(CI)(IO)(GR,GE)
BUILTIN\Server Operators:(RX)
BUILTIN\Server Operators:(OI)(CI)(IO)(GR,GE)
BUILTIN\Administrators:(M,WDAC,WO)
BUILTIN\Administrators:(OI)(CI)(IO)(F)
NT AUTHORITY\SYSTEM:(F)
NT AUTHORITY\SYSTEM:(OI)(CI)(IO)(F)
BUILTIN\Administrators:(M,WDAC,WO)
CREATOR OWNER:(OI)(CI)(IO)(F)

(RX) - Read & execute
Run "icacls /help" to view definitions of other permission codes.

Vulnerability Number

V-39331

Documentable

False

Rule Version

WN12-AD-000002-DC

Severity Override Guidance

Verify the permissions on the SYSVOL directory.

Open a command prompt.
Run "net share".
Make note of the directory location of the SYSVOL share.

By default this will be \Windows\SYSVOL\sysvol. For this requirement, permissions will be verified at the first SYSVOL directory level.

Open File Explorer.
Navigate to \Windows\SYSVOL (or the directory noted previously if different).
Right click the directory and select properties.
Select the Security tab.
Click Advanced.

If any standard user accounts or groups have greater than read & execute permissions, this is a finding. The default permissions noted below meet this requirement.

Type - Allow
Principal - Authenticated Users
Access - Read & execute
Inherited from - None
Applies to - This folder, subfolder and files

Type - Allow
Principal - Server Operators
Access - Read & execute
Inherited from - None
Applies to - This folder, subfolder and files

Type - Allow
Principal - Administrators
Access - Special
Inherited from - None
Applies to - This folder only
(Access - Special - Basic Permissions: all selected except Full control)

Type - Allow
Principal - CREATOR OWNER
Access - Full control
Inherited from - None
Applies to - Subfolders and files only

Type - Allow
Principal - Administrators
Access - Full control
Inherited from - None
Applies to - Subfolders and files only

Type - Allow
Principal - SYSTEM
Access - Full control
Inherited from - None
Applies to - This folder, subfolders and files


Alternately, use Icacls.exe to view the permissions of the SYSVOL directory.
Open a command prompt.
Run "icacls c:\Windows\SYSVOL
The following results should be displayed:

NT AUTHORITY\Authenticated Users:(RX)
NT AUTHORITY\Authenticated Users:(OI)(CI)(IO)(GR,GE)
BUILTIN\Server Operators:(RX)
BUILTIN\Server Operators:(OI)(CI)(IO)(GR,GE)
BUILTIN\Administrators:(M,WDAC,WO)
BUILTIN\Administrators:(OI)(CI)(IO)(F)
NT AUTHORITY\SYSTEM:(F)
NT AUTHORITY\SYSTEM:(OI)(CI)(IO)(F)
BUILTIN\Administrators:(M,WDAC,WO)
CREATOR OWNER:(OI)(CI)(IO)(F)

(RX) - Read & execute
Run "icacls /help" to view definitions of other permission codes.

Check Content Reference

M

Target Key

2350

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