Re: Internet has vuln.

[Justin Ferguson <jf () ownco net>]

derp, strike the part about steve wray v jeff walton; everything else
remains valid.

On Fri, Sep 13, 2013 at 3:28 PM, Jeffrey Walton <noloader () gmail com> wrote:
> On Fri, Sep 13, 2013 at 2:45 PM,  <Valdis.Kletnieks () vt edu> wrote:
> > On Thu, 12 Sep 2013 18:23:53 -0400, Jeffrey Walton said:
> >
> > > They ignored my comments on fixed size arrays based on MAX_PATH and
> > > the subsequent overflows and silent truncations due to use of sprintf
> > > and snprintf....
> >
> > Which "they" was it?
> >
> > If you're referring to this:
> >
> > http://comments.gmane.org/gmane.comp.security.selinux/16844
> There were many more than just that one.
>
> > Note that the guy you were replying to was a Japanese software engineer
> > employed by NEC.  If you want to argue the guy was an NSA plant trying to get a
> > backdoor in, feel free. But don't expect to be taken seriously without some
> > additional evidence.
> The code was accepted into the project
> > And it counted as "underhanded", how, exactly?
> I did not claim that.
>
> > In other words - under what conditions can you make a truncation to MAX_PATH
> > cause an actual hole? And to count as "underhanded" rather than merely "buggy",
> > you'd need at least a whiff of evidence that it was intentional.
> What's the difference if its exploitable in practice?
>
> There's no need to consciously add backdoors when developers are
> checking in shit code. They serve the same purpose add add a level of
> deniability.
>
> > Or as Kohei replied to you:
> >
> > "The selinux_mnt is not a variable given by external one, unless
> > application does not update it by itself.
> >
> > It is not difficult to modify this part to return ENAMETOOLONG
> > when snprintf() returns larger or equal with PATH_MAX."
> >
> > In the Linux community, this would count as '-ENOPATCH', as I'm not
> > finding where you ever submitted a patch to fix the issue.
> The more eyes the better, right....
>
> Crowd sourcing security is a myth.
>
> Jeff
>
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