Title

Scripted Window Security must be enforced in PowerPoint Viewer. (Cat II impact)

Discussion

Malicious websites often try to confuse or trick users into giving a site permission to perform an action allowing the site to take control of the users' computers in some manner. Disabling or not configuring this setting allows unknown websites to: -Create browser windows appearing to be from the local operating system. -Draw active windows displaying outside of the viewable areas of the screen capturing keyboard input. -Overlay parent windows with their own browser windows to hide important system information, choices or prompts.

Check Content

Verify the policy value for Computer Configuration -> Administrative Templates -> Microsoft Office 2016 (Machine) -> Security Settings -> IE Security "Scripted Window Security Restrictions" is set to "Enabled" and 'pptview.exe' is checked. Procedure: Use the Windows Registry Editor to navigate to the following key: HKLM\Software\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_WINDOW_RESTRICTIONS Criteria: If the value pptview.exe is REG_DWORD = 1, this is not a finding.

Fix Text

Set the policy value for Computer Configuration -> Administrative Templates -> Microsoft Office 2016 (Machine) -> Security Settings -> IE Security "Scripted Window Security Restrictions" to "Enabled" and place a check in he 'pptview.exe' check box.

Additional Identifiers

Rule ID: SV-85315r1_rule

Vulnerability ID: V-70691

Group Title: SRG-APP-000112

Expert Comments

CCIs tied to check.

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