From: Jimmy Yuen Ho Wong <wyuenho@gmail.com>
To: Emacs-Devel devel <emacs-devel@gnu.org>
Cc: "Perry E. Metzger" <perry@piermont.com>,
Eli Zaretskii <eliz@gnu.org>, Paul Eggert <eggert@cs.ucla.edu>,
Lars Ingebrigtsen <larsi@gnus.org>,
rms@gnu.org
Subject: Re: A couple of questions and concerns about Emacs network security
Date: Sat, 7 Jul 2018 10:59:42 +0100 [thread overview]
Message-ID: <CAKDRQS7HMCuynM6hpM9wDOEzkqqyimiYGjTsFYeHAkNCdv5QiQ@mail.gmail.com> (raw)
In-Reply-To: <877em7o09z.fsf@gmail.com>
On Sat, Jul 7, 2018 at 10:36 AM, Robert Pluim <rpluim@gmail.com> wrote:
> Jimmy Yuen Ho Wong <wyuenho@gmail.com> writes:
>
>> I disagree that prompting for pretty much every TLS connection is a
>> good idea. In security circles these days, there's such a thing known
>> as "security fatigue". Overly troublesome security measure that don't
>> take human psychology into account will lead to numbness. A side
>> effect of that is users will simply start ignoring security warnings
>> like they skip reading iTunes's EULA. This is an adverse unintended
>> consequence that achieves the opposite of what we want to do here.
>
> For normal usage, we should absolutely not prompt too much [1]. Iʼm not
> recommending 'paranoid' to anyone, but in my specific circumstances
> itʼs the right thing to do.
>
I still fail to see what those circumstances are that warrant
prompting the user whenever he visits a URL with TLS that he hasn't
visited before.
>>>>> `gnutls-min-prime-bits` should be `nil` on Emacs 26.2
>>>
>>> That might be going a bit far, but I can certainly do that locally and
>>> see what happens.
>>>
>>
>> As I've said, setting `gnutls-min-prime-bits` to nil simply means
>> GnuTLS will negotiate the right number of DH bits on the user's
>> behalf, starting from 1008 bits since 3.3.0.
>>
>>>
>>> Documentation is good. Iʼll see if I can find some time to work on
>>> that.
>>>
>>
>> Thanks for helping out :)
>
> Is your work on a git branch somewhere?
It's on Github: https://github.com/wyuenho/emacs/tree/additional-nsm-checks
Diff to master:
https://github.com/emacs-mirror/emacs/compare/master...wyuenho:additional-nsm-checks
You can just fork my fork and send over a PR.
There's still a couple of things I need to do:
1. Implement `nsm-trust-local-network`
2. Remove that change in src/gnutls.h not needed for bug#31946 (this
is from my OCSP stash still sitting on my machine)
3. Write some ert tests, but this should affect the doc effort
4. I might throw in a few more checks to detech DHE-DSS key exchange
and DSA signature. IETF TLSWG has removed it from TLS 1.3, so do
browsers, but I haven't been able to find much information about them
other than they are not used. There's a claim made that DSS key
exchange is just as bad as static RSA, but DHE-DSS is not that same as
DSS...
Thanks again!
>
> Regards
>
> Robert
>
> Footnotes:
> [1] If you fix the double-prompting caused by google's certificate
> load-balancing, that would reduce it a lot for me :-)
>
next prev parent reply other threads:[~2018-07-07 9:59 UTC|newest]
Thread overview: 221+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-22 22:00 A couple of questions and concerns about Emacs network security Jimmy Yuen Ho Wong
2018-06-22 22:43 ` Paul Eggert
2018-06-22 23:21 ` Lars Ingebrigtsen
2018-06-22 23:33 ` Lars Ingebrigtsen
2018-06-23 1:35 ` Jimmy Yuen Ho Wong
2018-06-23 10:23 ` Lars Ingebrigtsen
2018-06-23 10:34 ` Lars Ingebrigtsen
2018-06-23 10:48 ` Jimmy Yuen Ho Wong
2018-06-23 11:32 ` Lars Ingebrigtsen
2018-06-23 11:55 ` Jimmy Yuen Ho Wong
2018-06-23 12:05 ` Lars Ingebrigtsen
2018-06-23 12:13 ` Eli Zaretskii
2018-06-23 12:15 ` Lars Ingebrigtsen
2018-06-23 12:26 ` Eli Zaretskii
2018-07-07 9:57 ` Eli Zaretskii
2018-07-08 14:01 ` Lars Ingebrigtsen
2018-07-08 14:53 ` Eli Zaretskii
2018-07-08 15:06 ` Lars Ingebrigtsen
2018-07-08 15:23 ` Eli Zaretskii
2018-06-23 12:45 ` Jimmy Yuen Ho Wong
2018-06-24 12:53 ` Lars Ingebrigtsen
2018-07-05 13:33 ` Perry E. Metzger
2018-07-05 13:49 ` Eli Zaretskii
2018-07-05 15:29 ` Perry E. Metzger
2018-07-05 18:55 ` Eli Zaretskii
2018-07-05 19:26 ` Paul Eggert
2018-07-05 19:35 ` Eli Zaretskii
2018-07-05 20:01 ` Eli Zaretskii
2018-07-06 17:03 ` Paul Eggert
2018-07-06 17:36 ` Eli Zaretskii
2018-07-06 18:15 ` Paul Eggert
2018-07-07 7:04 ` Eli Zaretskii
2018-07-07 10:30 ` Jimmy Yuen Ho Wong
2018-07-07 11:35 ` Eli Zaretskii
2018-07-05 20:46 ` Perry E. Metzger
2018-07-05 20:45 ` Perry E. Metzger
2018-07-06 6:29 ` Eli Zaretskii
2018-07-06 23:08 ` Richard Stallman
2018-07-07 12:18 ` Perry E. Metzger
2018-07-07 13:19 ` Eli Zaretskii
2018-07-07 13:46 ` Perry E. Metzger
2018-07-07 14:17 ` Eli Zaretskii
2018-07-07 15:25 ` Perry E. Metzger
2018-07-07 16:08 ` Eli Zaretskii
2018-07-07 23:46 ` Richard Stallman
2018-07-08 0:25 ` Perry E. Metzger
2018-07-08 2:44 ` Eli Zaretskii
2018-07-08 22:55 ` Richard Stallman
2018-07-07 14:32 ` Jimmy Yuen Ho Wong
2018-07-07 15:15 ` Perry E. Metzger
2018-07-07 15:39 ` Jimmy Yuen Ho Wong
2018-07-07 18:16 ` Paul Eggert
2018-07-07 23:03 ` Jimmy Yuen Ho Wong
2018-07-07 15:57 ` Eli Zaretskii
2018-07-07 23:45 ` Richard Stallman
2018-07-05 13:50 ` Jimmy Yuen Ho Wong
2018-07-05 15:30 ` Perry E. Metzger
2018-07-05 15:36 ` Stefan Monnier
2018-07-05 16:05 ` Perry E. Metzger
2018-07-05 22:44 ` Richard Stallman
2018-07-06 6:01 ` Eli Zaretskii
2018-06-23 0:00 ` Paul Eggert
2018-06-23 0:10 ` Stefan Monnier
2018-06-23 9:57 ` Lars Ingebrigtsen
2018-06-23 2:17 ` Noam Postavsky
2018-06-23 6:40 ` Eli Zaretskii
2018-06-23 10:21 ` Jimmy Yuen Ho Wong
2018-06-23 11:26 ` Eli Zaretskii
2018-06-23 22:28 ` Noam Postavsky
2018-06-24 14:23 ` Eli Zaretskii
2018-06-24 14:34 ` Lars Ingebrigtsen
2018-06-24 14:48 ` Noam Postavsky
2018-06-24 15:30 ` Eli Zaretskii
2018-06-24 16:57 ` Lars Ingebrigtsen
2018-06-24 17:10 ` Jimmy Yuen Ho Wong
2018-06-24 17:39 ` Lars Ingebrigtsen
2018-06-24 18:29 ` Jimmy Yuen Ho Wong
2018-06-24 18:51 ` Eli Zaretskii
2018-06-24 21:30 ` Jimmy Yuen Ho Wong
2018-06-25 1:25 ` Van L
2018-06-25 2:28 ` Jimmy Yuen Ho Wong
2018-06-25 2:38 ` Jimmy Yuen Ho Wong
2018-06-25 17:16 ` Eli Zaretskii
2018-06-25 17:25 ` Jimmy Yuen Ho Wong
2018-06-25 18:06 ` Jimmy Yuen Ho Wong
2018-06-24 20:58 ` Lars Ingebrigtsen
2018-06-24 21:07 ` Lars Ingebrigtsen
2018-06-24 22:47 ` Jimmy Yuen Ho Wong
2018-06-25 0:04 ` Lars Ingebrigtsen
2018-06-25 0:33 ` Noam Postavsky
2018-06-25 0:36 ` Lars Ingebrigtsen
2018-06-24 21:28 ` Noam Postavsky
2018-06-24 21:57 ` Lars Ingebrigtsen
2018-06-25 16:06 ` Eli Zaretskii
2018-06-25 16:29 ` Jimmy Yuen Ho Wong
2018-06-25 16:58 ` Lars Ingebrigtsen
2018-06-25 17:08 ` Jimmy Yuen Ho Wong
2018-06-25 17:18 ` Eli Zaretskii
2018-06-30 17:40 ` Jimmy Yuen Ho Wong
2018-06-30 18:04 ` Eli Zaretskii
2018-06-25 17:09 ` Eli Zaretskii
2018-06-25 17:17 ` Eli Zaretskii
2018-06-25 16:55 ` Lars Ingebrigtsen
2018-06-25 17:06 ` Eli Zaretskii
2018-06-25 17:20 ` Jimmy Yuen Ho Wong
2018-06-25 17:33 ` Lars Ingebrigtsen
2018-07-05 15:52 ` Perry E. Metzger
2018-07-05 15:58 ` Jimmy Yuen Ho Wong
2018-07-05 16:36 ` Perry E. Metzger
2018-07-05 16:51 ` Jimmy Yuen Ho Wong
2018-07-05 18:25 ` Perry E. Metzger
2018-07-05 18:32 ` Eli Zaretskii
2018-07-05 18:43 ` Noam Postavsky
2018-07-05 20:31 ` Perry E. Metzger
2018-07-08 11:43 ` Lars Ingebrigtsen
2018-07-08 14:48 ` Eli Zaretskii
2018-07-06 9:01 ` Eli Zaretskii
2018-07-05 15:33 ` Perry E. Metzger
2018-07-05 18:58 ` Eli Zaretskii
2018-07-06 8:36 ` Robert Pluim
2018-07-06 8:49 ` Eli Zaretskii
2018-07-06 9:35 ` Robert Pluim
2018-07-06 12:32 ` Eli Zaretskii
2018-07-06 12:52 ` Robert Pluim
2018-07-06 13:31 ` Eli Zaretskii
2018-07-06 9:45 ` Stephen Berman
2018-07-06 12:41 ` Eli Zaretskii
2018-07-06 13:50 ` Stephen Berman
2018-07-07 7:15 ` martin rudalics
2018-07-07 12:22 ` Stephen Berman
2018-07-07 13:22 ` Eli Zaretskii
2018-07-07 13:47 ` Stephen Berman
2018-07-08 8:11 ` martin rudalics
2018-07-05 15:10 ` Perry E. Metzger
2018-06-23 6:45 ` Eli Zaretskii
2018-06-23 10:34 ` Jimmy Yuen Ho Wong
2018-07-05 15:58 ` Perry E. Metzger
2018-07-05 19:20 ` Paul Eggert
2018-07-05 20:46 ` Perry E. Metzger
2018-07-05 22:44 ` Richard Stallman
2018-07-06 6:42 ` Jimmy Yuen Ho Wong
2018-07-06 8:16 ` Eli Zaretskii
2018-07-06 9:28 ` Robert Pluim
2018-07-06 13:18 ` Eli Zaretskii
2018-07-06 18:06 ` Jimmy Yuen Ho Wong
2018-07-06 18:48 ` Perry E. Metzger
2018-07-07 7:02 ` Eli Zaretskii
2018-07-07 9:36 ` Robert Pluim
2018-07-07 9:59 ` Jimmy Yuen Ho Wong [this message]
2018-07-07 10:01 ` Jimmy Yuen Ho Wong
2018-07-07 21:44 ` Ted Zlatanov
2018-07-07 21:59 ` Paul Eggert
2018-07-07 22:11 ` Jimmy Yuen Ho Wong
2018-07-09 23:09 ` Ted Zlatanov
2018-07-10 18:20 ` Jimmy Yuen Ho Wong
2018-07-10 18:36 ` Eli Zaretskii
2018-07-10 18:40 ` Jimmy Yuen Ho Wong
2018-07-10 18:58 ` Eli Zaretskii
2018-07-13 20:50 ` Jimmy Yuen Ho Wong
2018-07-14 6:37 ` Eli Zaretskii
2018-07-14 17:18 ` Jimmy Yuen Ho Wong
2018-07-14 18:25 ` Eli Zaretskii
2018-07-07 22:13 ` Jimmy Yuen Ho Wong
2018-07-09 13:09 ` Robert Pluim
2018-07-09 13:33 ` Jimmy Yuen Ho Wong
2018-07-09 13:43 ` Lars Ingebrigtsen
2018-07-09 13:49 ` Jimmy Yuen Ho Wong
2018-07-09 17:15 ` Eli Zaretskii
2018-07-09 17:24 ` Jimmy Yuen Ho Wong
2018-07-10 0:06 ` Perry E. Metzger
2018-07-10 0:03 ` Perry E. Metzger
2018-07-10 0:02 ` Perry E. Metzger
2018-07-06 13:03 ` Jimmy Yuen Ho Wong
2018-07-06 14:06 ` Eli Zaretskii
2018-07-06 21:24 ` Jimmy Yuen Ho Wong
2018-07-07 7:55 ` Eli Zaretskii
2018-07-08 14:06 ` Lars Ingebrigtsen
2018-07-08 14:54 ` Jimmy Yuen Ho Wong
2018-07-08 15:13 ` Lars Ingebrigtsen
2018-07-08 16:56 ` Jimmy Yuen Ho Wong
2018-07-08 17:06 ` Paul Eggert
2018-07-08 17:25 ` Jimmy Yuen Ho Wong
2018-07-08 17:53 ` Lars Ingebrigtsen
2018-07-08 18:54 ` Jimmy Yuen Ho Wong
2018-07-08 19:30 ` Lars Ingebrigtsen
2018-07-08 19:32 ` Jimmy Yuen Ho Wong
2018-07-08 22:56 ` Richard Stallman
2018-07-08 17:47 ` Lars Ingebrigtsen
2018-07-08 18:10 ` Eli Zaretskii
2018-07-08 18:12 ` Jimmy Yuen Ho Wong
2018-07-08 18:26 ` Eli Zaretskii
2018-07-08 18:39 ` Lars Ingebrigtsen
2018-07-08 18:53 ` Eli Zaretskii
2018-07-08 19:22 ` Jimmy Yuen Ho Wong
2018-07-09 16:57 ` Eli Zaretskii
2018-07-09 17:17 ` Jimmy Yuen Ho Wong
2018-07-09 17:36 ` Jimmy Yuen Ho Wong
2018-07-09 17:38 ` Jimmy Yuen Ho Wong
2018-07-09 18:04 ` Eli Zaretskii
2018-07-09 18:10 ` Jimmy Yuen Ho Wong
2018-07-09 18:33 ` Eli Zaretskii
2018-07-09 18:47 ` Jimmy Yuen Ho Wong
2018-07-10 16:10 ` Eli Zaretskii
2018-07-08 19:28 ` Lars Ingebrigtsen
2018-07-08 19:31 ` Jimmy Yuen Ho Wong
2018-07-09 17:04 ` Eli Zaretskii
2018-07-09 17:02 ` Eli Zaretskii
2018-07-09 17:09 ` Jimmy Yuen Ho Wong
2018-07-09 15:29 ` Jimmy Yuen Ho Wong
2018-07-09 16:35 ` Robert Pluim
2018-07-08 18:31 ` Jimmy Yuen Ho Wong
2018-07-08 18:42 ` Lars Ingebrigtsen
2018-07-08 19:28 ` Jimmy Yuen Ho Wong
2018-07-08 17:53 ` Eli Zaretskii
2018-07-08 19:16 ` Jimmy Yuen Ho Wong
2018-07-08 14:55 ` Eli Zaretskii
2018-07-08 14:58 ` Jimmy Yuen Ho Wong
2018-07-08 15:18 ` Eli Zaretskii
2018-07-08 15:16 ` Lars Ingebrigtsen
2018-07-06 16:53 ` Paul Eggert
2018-07-06 23:11 ` Richard Stallman
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