Title

The User Authentication – Logon is not set properly for the Restricted Sites Zone. (Cat II impact)

Discussion

Care must be taken with user credentials and how automatic logons are performed and how default Windows credentials are passed to web sites.

Check Content

The policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Internet Explorer -> Internet Control Panel -> Security Page -> Restricted Sites Zone -> "Logon options" will be set to “Enabled” and "Anonymous logon". 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

The policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Internet Explorer -> Internet Control Panel -> Security Page -> Restricted Sites Zone -> "Logon options" will be set to “Enabled” and "Anonymous logon". Change the registry key HKLM\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4 Criteria: Set the value 1A00 to REG_DWORD = 196608 (decimal).

Additional Identifiers

Rule ID:

Vulnerability ID: V-6311

Group Title:

Expert Comments

CCIs tied to check.

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