File share permissions must be configured to remove the Everyone group.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-3245	2.015	SV-29213r2_rule		Medium

Description
By default, the Everyone group is given full control to new file shares. When a share is created, permissions should be reconfigured to give the minimum access to those accounts that require it.

STIG	Date
Windows 2008 Domain Controller Security Technical Implementation Guide	2018-03-07

Details

Check Text ( C-29879r3_chk )
Run the Computer Management Applet. Expand the “System Tools” object in the Tree window. Expand the “Shared Folders” object. Select the “Shares” object. Right click any user-created shares (ignore “Netlogon”, “Sysvol” and administrative shares; the system will prompt you if Properties are selected for administrative shares). Select Properties. Select the Share Permissions tab. If user-created file shares have not been reconfigured to remove ACL permissions from the “Everyone group”, then this is a finding. Note: Right clicking on “Computer” on the desktop or from the menu and selecting “Manage” will open Server Manager in Windows 2008, not Computer Management as in previous Windows versions. Note: On Application Servers, if regular users have write or delete permissions to shares containing application binary files (i.e. .exe, .dll, .cmd, etc.) this is a finding. Documentable: If shares created by applications require the "Everyone" group, this should be documented with the IAO.

Check Text ( C-29879r3_chk )

Run the Computer Management Applet.
Expand the “System Tools” object in the Tree window.
Expand the “Shared Folders” object.
Select the “Shares” object.
Right click any user-created shares (ignore “Netlogon”, “Sysvol” and administrative shares; the system will prompt you if Properties are selected for administrative shares).
Select Properties.
Select the Share Permissions tab.

If user-created file shares have not been reconfigured to remove ACL permissions from the “Everyone group”, then this is a finding.

Note: Right clicking on “Computer” on the desktop or from the menu and selecting “Manage” will open Server Manager in Windows 2008, not Computer Management as in previous Windows versions.

Note: On Application Servers, if regular users have write or delete permissions to shares containing application binary files (i.e. .exe, .dll, .cmd, etc.) this is a finding.

Documentable: If shares created by applications require the "Everyone" group, this should be documented with the IAO.

Fix Text (F-59r1_fix)
Remove permissions from the Everyone group from locally-created file shares and assign them to authorized groups.