Re: DNS vulnerability: other relevant software

[Eugene Teo <eteo () redhat com>]

Florian Weimer wrote:
> * Mark J. Cox:
>
> > > Additionally, Debian has noted (DSA 1605-1) that the GNU libc stub
> > > resolver could benefit from random query source ports as well, but
> > > no patches are currently available to implement this:
> > Note that GNU libc stub resolver when used with a recent kernel
> > (2.6.24+) will give you random UDP source ports on each request
> > because of this Linux commit:
> >
> > http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=32c1da70810017a98aa6c431a5494a302b6b9a30
>
> Is net_random() cryptographically secure?  The paper referenced in the
> source doesn't talk about this.

It isn't. It's actually a 32-bit pseudo-random number generator AFAIK.
Hmm.

Eugene