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Groups > linux.debian.security > #4382

Re: Debian Desktop Environment

From Elmar Stellnberger <estellnb@gmail.com>
Newsgroups linux.debian.security
Subject Re: Debian Desktop Environment
Date 2015-10-27 18:10 +0100
Message-ID <qofV0-7TL-23@gated-at.bofh.it> (permalink)
References <qoby2-59v-5@gated-at.bofh.it> <qoeme-6Qp-13@gated-at.bofh.it> <qofBF-7xc-41@gated-at.bofh.it>
Organization linux.* mail to news gateway

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Dear Jason Fergus,
Dear Subscribers of the Debian Security List,

   I am ready to share some more data about the incident and its 
circumstances as soon as you would contact me via gpg-mail as described 
under https://www.elstel.org/Contact.html. Anyone who is interested and 
reading this mail is welcome!
   Just email-me gpg-ed including your public key for response 
describing or giving me reference to who your are / what you are doing 
in the community (if not exuberantly returned by Google). As any gpg-key 
may either be lost or get in touch with an infected computer any time I 
would highly prefer if you were ready to incur the work of generating an 
own throw-away key for the communication.

Best Regards,
Elmar Stellnberger

On 27.10.2015 17:36, Jason Fergus wrote:
> I'm curious about how you were infected by a rootkit, which one it was,
> and what you did to discover it?  Using a Sandbox is a great idea for
> those two, except of course those are generally the applications with
> the most sensitive data as well.  I always try to disable html email,
> but people insist on using it...
>
> On Tue, 2015-10-27 at 16:25 +0100, Elmar Stellnberger wrote:
>> I would believe that it will heavily depend on how you configure your
>> desktop environment:
>> * One feature I do always turn off is desktop auto indexing because
>> otherwise even storing an email attachement just for invoking it with
>> an
>> online view-as-jpeg service could cause an infection. Note that you
>> may
>> have to do this twice (once for Gnome and once for KDE) if you have
>> installed according programs of both environments.
>> * select starting a new session on every bootup (the session
>> restoration
>> can be used as a hook for ephemeral and home directory rootkits)
>> * under KDE there is a list of background services that always run;
>> you
>> may reduce it to what you really need (invokable via systemsettings)
>> * likely there are other important configuration options (ask for
>> your env.)
>> * get some understanding of what your X-server does (f.i.
>> http://www.elstel.org/xchroot : problems with a pure chroot, trying
>> to
>> resolve these problems by hand)
>> * double check the security of the underlying system (netstat -atupn)
>> * note that your email program and your browser are the two most
>> vulnerable parts of your desktop environment; consider running them
>> under qemu in a virtual machine
>>
>> Once you would comply with all these hints you may likely discover a
>> rootkit inside the virtual machine for emailing or browsing as I did
>> lately. The KDE environment of the host system did not appear to have
>> compromised the security of the whole system so far at me.
>>
>> Elmar
>>
>>
>>
>> On 27.10.2015 12:29, Mateusz Kozłowski wrote:
>>> Hi,
>>> Could You tell me which debian desktop environment is the most
>>> security and the best privacy and which You recommned for debian
>>> users? (KDE, XFCE, GNOME etc.)?
>>>
>>>
>>

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Thread

Debian Desktop Environment Mateusz Kozłowski <mateuszk@hush.com> - 2015-10-27 13:30 +0100
  Re: Debian Desktop Environment Konstantin Khomoutov <flatworm@users.sourceforge.net> - 2015-10-27 14:10 +0100
  Re: Debian Desktop Environment Elmar Stellnberger <estellnb@gmail.com> - 2015-10-27 16:30 +0100
    Re: Debian Desktop Environment Jason Fergus <leech@thefnords.org> - 2015-10-27 17:50 +0100
      Re: Debian Desktop Environment Elmar Stellnberger <estellnb@gmail.com> - 2015-10-27 18:10 +0100
        Re: Debian Desktop Environment Elmar Stellnberger <estellnb@gmail.com> - 2015-10-27 18:40 +0100
  Re: Debian Desktop Environment Davide Prina <davide.prina@gmail.com> - 2015-10-27 20:30 +0100

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