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Prevent PKU2U authentication using online identities.


Overview

Finding ID Version Rule ID IA Controls Severity
V-21953 3.153 SV-25276r1_rule ECSC-1 Medium
Description
This setting prevents online identities from being used by PKU2U, which is a peer-to-peer authentication protocol. Authentication will be centrally managed with Windows user accounts.
STIG Date
Windows 7 Security Technical Implementation Guide 2014-01-07

Details

Check Text ( C-26838r1_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 “Network Security: Allow PKU2U authentication requests to this computer to use online identities” is not set to “Disabled”, then this is a finding.

The policy referenced configures the following registry value:

Registry Hive: HKEY_LOCAL_MACHINE
Subkey: \System\CurrentControlSet\Control\LSA\pku2u\

Value Name: AllowOnlineID

Type: REG_DWORD
Value: 0
Fix Text (F-22942r1_fix)
Configure the policy value for “Network Security: Allow PKU2U authentication requests to this computer to use online identities” to “Disabled”.