Title

The system must be configured to prevent unsolicited remote assistance offers. (Cat II impact)

Discussion

Remote assistance allows another user to view or take control of the local session of a user. Unsolicited remote assistance is help that is offered by the remote user. This may allow unauthorized parties access to the resources on the computer.

Check Content

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services\ Value Name: fAllowUnsolicited Value Type: REG_DWORD Value: 0 Offer remote assistance may be enabled on workstations if mitigations are in place. This must be documented with the ISSO.

Fix Text

Configure the system to prevent unsolicited remote assistance offers by setting the policy value for Computer Configuration >> Administrative Templates >> System >> Remote Assistance >> "Offer Remote Assistance" to "Disabled".

Additional Identifiers

Rule ID:

Vulnerability ID: V-3470

Group Title:

Expert Comments

CCIs tied to check.

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