Openwall GNU/*/Linux - a small security-enhanced Linux distro for servers
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Thu, 22 Oct 2015 04:36:12 +0000
From: Loganaden Velvindron <loganaden@...il.com>
To: oss-security@...ts.openwall.com
Cc: CVE ID Requests <cve-assign@...re.org>
Subject: Re: Prime example of a can of worms

On Mon, Oct 19, 2015 at 4:06 AM, Kurt Seifried <kseifried@...hat.com> wrote:

> So in light of:
>
> https://weakdh.org/imperfect-forward-secrecy-ccs15.pdf
>
> and
>
>
> https://www.eff.org/deeplinks/2015/10/how-to-protect-yourself-from-nsa-attacks-1024-bit-DH
>
> I would suggest we minimally have a conversation about DH prime security
> (e.g. using larger 2048 primes, and/or a better mix of primes to make
> pre-computation attacks harder). Generating good primes is not easy from
> what I've seen of several discussions, my fear would be that people try to
> fix this by finding new primes that turn out to be problematic.
>
> Secondly I would also suggest we seriously look at assigning a CVE to the
> use of suspected compromised DH primes. Despite the fact we don't have
> conclusive direct evidence (that I'm aware of, correct me if there is any
> conclusive evidence) I think in this case:
>
> 1) the attack is computationally feasible for an organization with
> sufficient funding
> 2) the benefit of such an attack far, far, FAR outweighs the cost for
> certain orgs, from the paper:
>
>
I think that it's important for organizations who are providing services
that are considered critical to the stability of the Internet to audit &
take corrective measures for all of their impacted services.

Powered by blists - more mailing lists

Your e-mail address:

Please check out the Open Source Software Security Wiki, which is counterpart to this mailing list.

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.