On 13:46 Wed 23 Mar , Lindsay Haisley wrote:
> With perhaps a very few exception these exploits are aimed at MS
> Windows boxes. Recent Flash vulnerabilities, for instance, are listed
> as affecting "Adobe Flash Player 10.1.82.76 and earlier versions for
> Windows, Macintosh, Linux, and Solaris, and Adobe Flash Player
> 10.1.92.10 for Android" but the report goes on to say that "There are
> reports that this vulnerability is being actively exploited in the
> wild against Adobe Flash Player on Windows." No mention of Linux, and
> I can find no references to a web or email borne exploit found in the
> wild that actually generates an *infection* on a Linux box. Consider
> this a challenge, if you will, since I'd love to be proved wrong on
> this last point and learn something.
It's called reverse shellcode. One would exploit a vulnerability in your
web browser, email reader, or integrated apps/libraries (primarily
Flash, Evince/libpoppler, or Java) that provides the ability to run
arbitrary code as the local user to get the shellcode onto your system
and run it. Reverse shellcode then connects from your computer to a
remote server and provides them with a login shell. At that point, they
still need to come up with a local root vulnerability or use a keylogger
till they get you becoming root.
I'm not going to go into any more detail on it, but you can find it if
you do some searching.
--
Thanks,
Donnie
Donnie Berkholz
Desktop project lead
Gentoo Linux
Blog: http://dberkholz.com
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