Users must be notified if a web-based program attempts to install software.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-253412 | WN11-CC-000320 | SV-253412r991589_rule | CCI-000366 | medium |
| 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. | ||||
| STIG | Date | |||
| Microsoft Windows 11 Security Technical Implementation Guide | 2025-05-15 | |||
Details
Check Text (C-253412r991589_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_MACHINE
Registry Path: \SOFTWARE\Policies\Microsoft\Windows\Installer\
Value Name: SafeForScripting
Value Type: REG_DWORD
Value: 0 (or if the Value Name does not exist)
Fix Text (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".