Title

Terminal Services is not configured to allow only the original client to reconnect. (Cat II impact)

Discussion

This setting, which is located under the Sessions section of the Terminal Services configuration option, controls whether a different client may be used to resume a disconnected session. Only the original client should be able to resume a session to help prevent session hijacking.

Check Content

If the following registry value doesn’t exist or its value is not set to 1, then this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Subkey: \Software\Policies\Microsoft\Windows NT\Terminal Services\ Value Name: fReconnectSame Type: REG_DWORD Value: 1

Fix Text

Configure the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Terminal Services -> Sessions “Allow Reconnection from Original Client Only” to “Enabled”.

Additional Identifiers

Rule ID: SV-3459r1_rule

Vulnerability ID: V-3459

Group Title: Terminal Services - Original Client Reconnection

Expert Comments

CCIs tied to check.

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