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Internet Explorer Processes for Restrict File Download must be enforced (Reserved).


Overview

Finding ID Version Rule ID IA Controls Severity
V-15556 DTBI630 SV-40672r1_rule ECSC-1 Medium
Description
In certain circumstances, web sites can initiate file download prompts without interaction from users. This technique can allow web sites to put unauthorized files on user's hard drives if they click the wrong button and accept the download. If you configure the Restrict File Download\Internet Explorer Processes policy setting to Enabled, file download prompts that are not user-initiated are blocked for Internet Explorer processes. If you configure this policy setting as Disabled, prompting will occur for file downloads that are not user-initiated for Internet Explorer processes. Note: This setting is configured as Enabled in all environments specified in this guide to help prevent attackers from placing arbitrary code on users' computers.
STIG Date
Microsoft Internet Explorer 9 Security Technical Implementation Guide 2015-12-17

Details

Check Text ( C-39403r2_chk )
The policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Internet Explorer -> Security Features -> Restrict File Download -> "Internet Explorer Processes" must be “Enabled”.

Procedure: Use the Windows Registry Editor to navigate to the following key:
HKLM\Software\Policies\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_RESTRICT_FILEDOWNLOAD

Criteria: If the value (Reserved) is REG_SZ = 1, this is not a finding.
Fix Text (F-34525r1_fix)
Set the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Internet Explorer -> Security Features -> Restrict File Download -> "Internet Explorer Processes" to “Enabled”.