IPv6 source routing must be configured to highest protection.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-21955	3.155	SV-25278r2_rule	ECSC-1	Low

Description
Configuring the system to disable IPv6 source routing protects against spoofing.

STIG	Date
Windows 7 Security Technical Implementation Guide	2015-06-16

Details

Check Text ( C-60817r2_chk )
Analyze the system using the Security Configuration and Analysis snap-in. Expand the Security Configuration and Analysis tree view. Navigate to Local Policies >> Security Options. If the value for "MSS: (DisableIPSourceRouting IPv6) IP source routing protection level (protects against packet spoofing)" is not set to "Highest protection, source routing is completely disabled", this is a finding. The policy referenced configures the following registry value: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SYSTEM\CurrentControlSet\Services\Tcpip6\Parameters\ Value Name: DisableIpSourceRouting Type: REG_DWORD Value: 2

Check Text ( C-60817r2_chk )

Analyze the system using the Security Configuration and Analysis snap-in.
Expand the Security Configuration and Analysis tree view.
Navigate to Local Policies >> Security Options.

If the value for "MSS: (DisableIPSourceRouting IPv6) IP source routing protection level (protects against packet spoofing)" is not set to "Highest protection, source routing is completely disabled", this is a finding.

The policy referenced configures the following registry value:

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

Value Name: DisableIpSourceRouting

Type: REG_DWORD
Value: 2

Fix Text (F-65549r2_fix)
Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "MSS: (DisableIPSourceRouting IPv6) IP source routing protection level (protects against packet spoofing)" to "Highest protection, source routing is completely disabled".