Microsoft Windows 11

Users must be notified if a web-based program attempts to install software

STIG ID: WN11-CC-000320 | SRG: SRG-OS-000480-GPOS-00227 | Severity: Medium | CCI: CCI-000366 | Vulnerability ID: V-253412

Description

Web-based programs may attempt to install malicious software on a system. Ensuring users are notified if a web-based program attempts to install software allows them to refuse the installation.

Check

C-56865r829318_chk

The default behavior is for Internet Explorer to warn users and select whether to allow or refuse installation when a web-based program attempts to install software on the system.If it exists and is configured with a value of "1", this is a finding.Registry Hive: HKEY_LOCAL_MACHINERegistry Path: \SOFTWARE\Policies\Microsoft\Windows\Installer\Value Name: SafeForScriptingValue Type: REG_DWORDValue: 0 (or if the Value Name does not exist)

Fix

F-56815r829319_fix

The default behavior is for Internet Explorer to warn users and select whether to allow or refuse installation when a web-based program attempts to install software on the system.To correct this, configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Installer >> "Prevent Internet Explorer security prompt for Windows Installer scripts" to "Not Configured" or "Disabled".