[WEB SECURITY] Web-based VM detection and coarse-grained fingerprinting

Amit Klein aksecurity at gmail.com
Tue Oct 6 07:46:48 EDT 2015


Hi

I just published an advisory that covered 3 browser families
(Microsoft Internet Explorer 10-11, Microsoft Edge and Mozilla Firefox
34.0-40.x). It turns out that on Windows 7 or above in combination
with these browsers, it is possible to extract the
frequency of the Windows performance counter, using standard HTML5 and
Javascript. With the Windows performance counter frequency, it is
possible to remotely detect some virtual machines and to coarse-grain
fingerprint physical machines.

The full advisory is here:

http://www.securitygalore.com/site3/vmd1-advisory

A demo page for this advisory is here:

http://www.securitygalore.com/files/vmd1.html

A fix is available in Firefox 41:

https://www.mozilla.org/en-US/security/advisories/mfsa2015-114/

Finally, you may be interested in my page dedicated to web-based VM
detection methods:

http://www.securitygalore.com/site3/web_based_vm_detection

Thanks,
-Amit
http://www.securitygalore.com/




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