Simon Ryeo has reported a vulnerability in CDNetworks Nefficient Download, which can be exploited by malicious people to compromise a user's system.
The vulnerability is caused due to an input validation error in the NeffyLauncher ActiveX control (NeffyLauncher.dll). This can be exploited to download a malicious file into an arbitrary directory (e.g. the "All Users" startup folder) by assigning a string containing directory traversal sequences to the "SkinPath" property with the "HttpSkin" property set to the malicious file to be downloaded.
The vulnerability is reported in version 1.05. Other versions may also be affected.
Solution: The vendor has reportedly issued a patch.
Provided and/or discovered by: Simon Ryeo
Original Advisory: http://seclists.org/bugtraq/2008/Apr/0065.html
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Subject: CDNetworks Nefficient Download NeffyLauncher ActiveX Control Directory Traversal
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