File shares must limit access to data on a system.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-3245	WN12-GE-000018	SV-52881r2_rule		Medium

Description
Shares on a system provide network access. To prevent exposing sensitive information, where shares are necessary, permissions must be reconfigured to give the minimum access to those accounts that require it.

STIG	Date
Windows Server 2012 / 2012 R2 Domain Controller Security Technical Implementation Guide	2016-06-08

Details

Check Text ( C-47198r3_chk )
Open "Computer Management". Navigate to "Shared Folders" under "System Tools". Select the "Shares" object. Right click any non-system-created shares (the system will prompt when Properties is selected for system-created shares). Select Properties. Select the Share Permissions tab. Verify the necessity of any shares found. If the file shares have not been reconfigured to restrict permissions to the specific groups or accounts that require access, this is a finding. Select the Security tab. If the NTFS permissions have not been reconfigured to restrict permissions to the specific groups or accounts that require access, this is a finding.

Check Text ( C-47198r3_chk )

Open "Computer Management".
Navigate to "Shared Folders" under "System Tools".
Select the "Shares" object.
Right click any non-system-created shares (the system will prompt when Properties is selected for system-created shares).
Select Properties.
Select the Share Permissions tab.

Verify the necessity of any shares found. If the file shares have not been reconfigured to restrict permissions to the specific groups or accounts that require access, this is a finding.

Select the Security tab.

If the NTFS permissions have not been reconfigured to restrict permissions to the specific groups or accounts that require access, this is a finding.

Fix Text (F-45807r2_fix)
If a share is required on a system, configure the share and NTFS permissions to limit access to the specific groups or accounts that require it. Remove any unnecessary nonsystem-created shares.