Title

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

Discussion

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.

Check Content

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

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.

Additional Identifiers

Rule ID: SV-40619r1_rule

Vulnerability ID: V-6311

Group Title: DTBI136-User Authentication - Logon - Restricted

Expert Comments

CCIs tied to check.

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