Windows 10 Exploit Protection system-level mitigation, Validate exception chains (SEHOP), must be on.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-77101	WN10-EP-000050	SV-91797r1_rule		Medium

Description
Exploit protection in Windows 10 enables mitigations against potential threats at the system and application level. Several mitigations, including "Validate exception chains (SEHOP)", are enabled by default at the system level. SEHOP (structured exception handling overwrite protection) ensures the integrity of an exception chain during exception dispatch. If this is turned off, Windows 10 may be subject to various exploits.

Description

Exploit protection in Windows 10 enables mitigations against potential threats at the system and application level. Several mitigations, including "Validate exception chains (SEHOP)", are enabled by default at the system level. SEHOP (structured exception handling overwrite protection) ensures the integrity of an exception chain during exception dispatch. If this is turned off, Windows 10 may be subject to various exploits.

STIG	Date
Windows 10 Security Technical Implementation Guide	2017-12-01

Details

Check Text ( C-76711r2_chk )
This is NA prior to v1709 of Windows 10. Run "Windows PowerShell" with elevated privileges (run as administrator). Enter "Get-ProcessMitigation -System". If the status of "SEHOP: Enable" is "OFF", this is a finding. Values that would not be a finding include: ON NOTSET

Fix Text (F-83799r3_fix)
Ensure Exploit Protection system-level mitigation, "Validate exception chains (SEHOP)", is turned on. Open "Windows Defender Security Center". Select "App & browser control". Select "Exploit protection settings". Under "System settings", configure "Validate exception chains (SEHOP)" to "On by default" or "Use default ()".