Non system-created file shares on a system must limit access to groups that require it.

From Windows Server 2012/2012 R2 Domain Controller Security Technical Implementation Guide

Associated with: CCI-001090

SV-52881r3_rule Non system-created file shares on a system must limit access to groups that require it.

Vulnerability discussion

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.

Check content

If only system-created shares such as "ADMIN$", "C$", and "IPC$" exist on the system, this is NA. (System-created shares will display a message that it has been shared for administrative purposes when "Properties" is selected.) Run "Computer Management". Navigate to System Tools >> Shared Folders >> Shares. Right click any non-system-created shares. Select "Properties". Select the "Share Permissions" tab. 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

If a non-system-created 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 non-system-created shares.

Pro Tips

Lavender hyperlinks in small type off to the right (of CSS class id, if you view the page source) point to globally unique URIs for each document and item. Copy the link location and paste anywhere you need to talk unambiguously about these things.

You can obtain data about documents and items in other formats. Simply provide an HTTP header Accept: text/turtle or Accept: application/rdf+xml.