linux-kernel - Re: NFS4 authentification / fsuid

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Message-ID: <alpine.LFD.0.999.0709201234090.14806@enigma.security.iitk.ac.in>
Date:	Thu, 20 Sep 2007 12:45:14 +0530 (IST)
From:	Satyam Sharma <satyam@...radead.org>
To:	Valdis.Kletnieks@...edu
cc:	Kyle Moffett <mrmacman_g4@....com>,
	Trond Myklebust <trond.myklebust@....uio.no>,
	"J. Bruce Fields" <bfields@...ldses.org>,
	Jan Engelhardt <jengelh@...putergmbh.de>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: NFS4 authentification / fsuid

Hi Valdis,


On Wed, 19 Sep 2007, Valdis.Kletnieks@...edu wrote:
> 
> On Wed, 19 Sep 2007 01:16:28 EDT, Kyle Moffett said:
> 
> > I am assuming that if the laptop has sufficiently important data on  
> > it to warrant the above steps then I am also clueful enough to:
> >    (A)  Not carry the laptop around unsecured areas,
> >    (B)  Keep a close enough eye on it and be aware that it's gone by  
> > the time they get to step 2, OR
> >    (C)  Pay somebody to build me a better physical chassis for my laptop
> 
> Building a better chassis can be a challenge when the threat model really
> *does* include attacks by a well-funded TLA.
> 
> http://www.epic.org/crypto/scarfo/murch_aff.pdf

Thanks for the link! And this was ... 1999 (!) Probably goes without
saying that physical hacking tricks have only become even more refined/
perfected by now :-)


> The FBI did an *initial* entry to survey the hardware, and then a total of
> *five* other entries before they actually installed it.  Note the technical
> and legal requirements required on the KLS (it had to, among other things,
> capture PGP passphrases but *not* anything that was typed online).


Thanks,

Satyam
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