IPv6 must be disabled until a deliberate transition strategy has been implemented. Use of IPv6 transition technologies must be disabled.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-14262	5.050	SV-14873r2_rule	ECSC-1	Medium

Description
Any nodes’ interface with IPv6 enabled by default presents a potential risk of traffic being transmitted or received without proper risk mitigation strategy and is therefore, a serious security concern.

STIG	Date
Windows Vista Security Technical Implementation Guide	2014-06-27

Details

Check Text ( C-52079r1_chk )
Prior to transition, IPv6 must be disabled on all interfaces. 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: \System\CurrentControlSet\Services\Tcpip6\Parameters\ Value Name: DisabledComponents Type: REG_DWORD Value: 0xffffffff If IPv6 transition has been implemented, the following will disable tunnel interfaces allowing native IPv6. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \System\CurrentControlSet\Services\Tcpip6\Parameters\ Value Name: DisabledComponents Type: REG_DWORD Value: 0x1 Discrepancies in documentation have resulted in several changes to this requirement. See Microsoft article 929852 for details of the DisabledComponents registry value. Documentable: If disabling IPv6 on all interfaces prior to the transition to supporting IPv6 causes issues with necessary applications or services, document this with the IAO.

Check Text ( C-52079r1_chk )

Prior to transition, IPv6 must be disabled on all interfaces. 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: \System\CurrentControlSet\Services\Tcpip6\Parameters\

Value Name: DisabledComponents

Type: REG_DWORD
Value: 0xffffffff

If IPv6 transition has been implemented, the following will disable tunnel interfaces allowing native IPv6.

Registry Hive: HKEY_LOCAL_MACHINE
Registry Path: \System\CurrentControlSet\Services\Tcpip6\Parameters\

Value Name: DisabledComponents

Type: REG_DWORD
Value: 0x1

Discrepancies in documentation have resulted in several changes to this requirement. See Microsoft article 929852 for details of the DisabledComponents registry value.

Documentable: If disabling IPv6 on all interfaces prior to the transition to supporting IPv6 causes issues with necessary applications or services, document this with the IAO.

Fix Text (F-53965r2_fix)
Add the following registry keys to the system. To disable IPv6 on all interfaces: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \System\CurrentControlSet\Services\Tcpip6\Parameters\ Value Name: DisabledComponents Type: REG_DWORD Value: 0xffffffff To disable all IPv6 tunneling interfaces: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \System\CurrentControlSet\Services\Tcpip6\Parameters\ Value Name: DisabledComponents Type: REG_DWORD Value: 0x1 Discrepancies in documentation have resulted in several changes to this requirement. See Microsoft article 929852 for details of the DisabledComponents registry value.

Fix Text (F-53965r2_fix)

Add the following registry keys to the system.

To disable IPv6 on all interfaces:

Registry Hive: HKEY_LOCAL_MACHINE
Registry Path: \System\CurrentControlSet\Services\Tcpip6\Parameters\

Value Name: DisabledComponents

Type: REG_DWORD
Value: 0xffffffff

To disable all IPv6 tunneling interfaces:

Registry Hive: HKEY_LOCAL_MACHINE
Registry Path: \System\CurrentControlSet\Services\Tcpip6\Parameters\

Value Name: DisabledComponents

Type: REG_DWORD
Value: 0x1

Discrepancies in documentation have resulted in several changes to this requirement. See Microsoft article 929852 for details of the DisabledComponents registry value.