Windows 10 must be configured to prevent certificate error overrides in Microsoft Edge.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-82139	WN10-CC-000238	SV-96853r1_rule		Medium

Description
Web security certificates provide an indication whether a site is legitimate. This policy setting prevents the user from ignoring Secure Sockets Layer/Transport Layer Security (SSL/TLS) certificate errors that interrupt browsing.

STIG	Date
Windows 10 Security Technical Implementation Guide	2019-01-04

Details

Check Text ( C-81939r3_chk )
This setting is applicable starting with v1809 of Windows 10; it is NA for prior versions. Windows 10 LTSC\B versions do not include Microsoft Edge; this is NA for those systems. If the following registry value does not exist or is not configured as specified, this is a finding. Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\MicrosoftEdge\Internet Settings\ Value Name: PreventCertErrorOverrides Type: REG_DWORD Value: 0x00000001 (1)

Check Text ( C-81939r3_chk )

This setting is applicable starting with v1809 of Windows 10; it is NA for prior versions.

Windows 10 LTSC\B versions do not include Microsoft Edge; this is NA for those systems.

If the following registry value does not exist or is not configured as specified, this is a finding.

Registry Hive: HKEY_LOCAL_MACHINE
Registry Path: \SOFTWARE\Policies\Microsoft\MicrosoftEdge\Internet Settings\

Value Name: PreventCertErrorOverrides

Type: REG_DWORD
Value: 0x00000001 (1)

Fix Text (F-88993r1_fix)
Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Microsoft Edge >> "Prevent certificate error overrides" to "Enabled".