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← Back to Microsoft Windows 11 Security Technical Implementation Guide

V-253267

CAT II (Medium)

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

Rule ID

SV-253267r1137695_rule

STIG

Microsoft Windows 11 Security Technical Implementation Guide

Version

V2R7

CCIs

CCI-001090

Discussion

Shares which provide network access, must not 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.

Check Content

Non-system-created shares must not 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

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.