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


Overview

Finding ID Version Rule ID IA Controls Severity
V-63357 WN10-00-000060 SV-77847r1_rule Medium
Description
Shares which provide network access, should not typically exist on a workstation except for system-created administrative shares, and could potentially expose sensitive information. If a share is necessary, share permissions, as well as NTFS permissions, must be reconfigured to give the minimum access to those accounts that require it.
STIG Date
Windows 10 Security Technical Implementation Guide 2019-01-04

Details

Check Text ( C-64095r1_chk )
Non system-created shares should not typically exist on workstations.

If only system-created shares exist on the system this is NA.

Run "Computer Management".
Navigate to System Tools >> Shared Folders >> Shares.

If the only shares listed are "ADMIN$", "C$" and "IPC$", this is NA.
(Selecting Properties for system-created shares will display a message that it has been shared for administrative purposes.)

Right click any non-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-69277r1_fix)
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.