Logon options must be configured and enforced (Restricted Sites zone).

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-6311	DTBI136	SV-40619r1_rule	ECSC-1	Medium

Description
Users could submit credentials to servers operated by malicious people who could then attempt to connect to legitimate servers with those captured credentials. Care must be taken with user credentials, automatic logon performance, and how default Windows credentials are passed to web sites.

STIG	Date
Internet Explorer 9 Security Technical Implementation Guide	2015-06-30

Details

Check Text ( C-39362r1_chk )
The policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Internet Explorer -> Internet Control Panel -> Security Page -> Restricted Sites Zone -> "Logon options" must be “Enabled” and "Anonymous logon" selected from the drop-down box. Procedure: Use the Windows Registry Editor to navigate to the following key: HKLM\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4 Criteria: If the value 1A00 is REG_DWORD = 196608 (decimal), this is not a finding.

Check Text ( C-39362r1_chk )

The policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Internet Explorer -> Internet Control Panel -> Security Page -> Restricted Sites Zone -> "Logon options" must be “Enabled” and "Anonymous logon" selected from the drop-down box.

Procedure: Use the Windows Registry Editor to navigate to the following key: HKLM\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4

Criteria: If the value 1A00 is REG_DWORD = 196608 (decimal), this is not a finding.

Fix Text (F-34473r1_fix)
Set the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Internet Explorer -> Internet Control Panel -> Security Page -> Restricted Sites Zone -> "Logon options" to “Enabled” and select "Anonymous logon" from the drop-down box.