Re: ifIndex overflow (Linux Kernel - net/core/dev.c) [maybe offtopic]

[Jeffrey Walton <noloader () gmail com>]

>  The former requiring too much effort
I'm not sure I agree with this statement. When Sony pissed off folks
over the Playstation, countless hours were spent on the breaks and
breach. Confer:
http://thehackernews.com/2012/10/sony-playstation-3-hacked-with-custom.html
and http://www.nbcnews.com/technology/ingame/hackers-stole-personal-data-playstation-network-123618.

It does not hurt that Sony chronically drives drunk on the information
superhighway. Confer:
http://attrition.org/security/rants/sony_aka_sownage.html.

Don't under estimate an attackers will or resolve.

Jeff

On Fri, Feb 8, 2013 at 6:05 AM, Daniel Corbe <corbe () corbe net> wrote:
> That would require that you have sufficient access to create pseudo-eth
> devices in the first place.  A vector of attack which requires previous
> privilege escalation or which is carried out by an individual in a
> position of trust is wholly uninteresting.   The former requiring too
> much effort and the latter requiring a reexamination of your
> interpersonal relationships.
>
> -Daniel
>
> Daniel Preussker <daniel () preussker net> writes:
>
> > Hi,
> >
> > I was looking into the net/core/dev.c from the current Kernel
> > (previous also have this) and found out that ifIndex gets incremented
> > by an endless loop.
> >
> > After creating 4 billion pseudo-eth devices I finally got it to
> > overflow and endless loop, had to kill the kernel - fun right?
> >
> >
> >
> > General question, is this known?
> >
> >
> > Daniel Preussker
> >
> > [ Security Consultant, Network & Protocol Security and Cryptography
> > [ LPI & Novell Certified Linux Engineer and Researcher
> > [ +49 178 600 96 30
> > [ Daniel () Preussker Net
> > [ http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x87E736968E490AA1

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