Title

Anonymous access to Named Pipes and Shares must be restricted. (Cat I impact)

Discussion

Allowing anonymous access to named pipes or shares provides the potential for unauthorized system access. This setting restricts access to those defined in "Network access: Named Pipes that can be accessed anonymously" and "Network access: Shares that can be accessed anonymously", both of which must be blank under other requirements.

Check Content

Analyze the system using the Security Configuration and Analysis snap-in. (See "Performing Analysis with the Security Configuration and Analysis Snap-in" in the STIG Overview document.) Expand the Security Configuration and Analysis tree view. Navigate to Local Policies -> Security Options. If the value for "Network access: Restrict anonymous access to Named Pipes and Shares" is not set to "Enabled", this is a finding. The policy referenced configures the following registry value: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \System\CurrentControlSet\Services\LanManServer\Parameters\ Value Name: RestrictNullSessAccess Value Type: REG_DWORD Value: 1

Fix Text

Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "Network access: Restrict anonymous access to Named Pipes and Shares" to "Enabled".

Additional Identifiers

Rule ID: SV-48160r2_rule

Vulnerability ID: V-6834

Group Title: Anonymous Access to Named Pipes and Shares

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.