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[debbugs-tracker] bug#23027: closed (25.1.50; Emacs refuses to talk to e


From: GNU bug Tracking System
Subject: [debbugs-tracker] bug#23027: closed (25.1.50; Emacs refuses to talk to eternal-september because they now use an MD5 certificate, apparently)
Date: Fri, 29 Apr 2016 12:44:02 +0000

Your message dated Fri, 29 Apr 2016 14:43:03 +0200
with message-id <address@hidden>
and subject line Re: bug#23027: 25.1.50; Emacs refuses to talk to 
eternal-september because they now use an MD5 certificate, apparently
has caused the debbugs.gnu.org bug report #23027,
regarding 25.1.50; Emacs refuses to talk to eternal-september because they now 
use an MD5 certificate, apparently
to be marked as done.

(If you believe you have received this mail in error, please contact
address@hidden)


-- 
23027: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=23027
GNU Bug Tracking System
Contact address@hidden with problems
--- Begin Message --- Subject: 25.1.50; Emacs refuses to talk to eternal-september because they now use an MD5 certificate, apparently Date: Wed, 16 Mar 2016 11:54:17 +0100
Anssi Saari <address@hidden> writes:

> And with a wild guess after visiting an ssl checker website I think I
> might need MD5 for signature checking. gnutls.el mentions
> GNUTLS_VERIFY_ALLOW_SIGN_RSA_MD5 but I don't know how to specify that
> from Gnus.

Here's an easy test case:

(open-network-stream
 "nntpd" (get-buffer-create "*foo*")
 "news.eternal-september.org" "nntp"
 :type 'starttls
 :end-of-command "^\\([2345]\\|[.]\\).*\n"
 :capability-command "HELP\r\n"
 :success "^3"
 :starttls-function
 (lambda (capabilities)
   (if (not (string-match "STARTTLS" capabilities))
       nil
     "STARTTLS\r\n")))

First of all, I think the error message is lacking.  It should say more
about what's failing.

As to the bug -- gnutls by default now refuses to deal with MD5
certificates.  We could override that, and instead let the network
security manager notify the user that the connection isn't safe.

I think that's a better solution, but others may differ.




In GNU Emacs 25.1.50.26 (x86_64-unknown-linux-gnu, GTK+ Version 3.4.2)
 of 2016-03-12 built on stories
Repository revision: 63efcc268635dea78c6bd80749eae4ee2c72d717
Windowing system distributor 'The X.Org Foundation', version 11.0.11204000
System Description:     Debian GNU/Linux 7.9 (wheezy)

Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND GSETTINGS NOTIFY GNUTLS
LIBXML2 FREETYPE LIBOTF XFT ZLIB TOOLKIT_SCROLL_BARS GTK3 X11

Important settings:
  value of $LANG: en_US
  locale-coding-system: iso-latin-1-unix

Major mode: Group

Minor modes in effect:
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  tooltip-mode: t
  global-eldoc-mode: t
  electric-indent-mode: t
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  global-font-lock-mode: t
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Recent messages:
Auto-saving...done
Mark set [2 times]
Sending...
Mark set [2 times]
Sending news via 
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 using nnvirtual...
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Saving file /home/larsi/Mail/archive/sent/2016w11...
Wrote /home/larsi/Mail/archive/sent/2016w11
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Making completion list...

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-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no




--- End Message ---
--- Begin Message --- Subject: Re: bug#23027: 25.1.50; Emacs refuses to talk to eternal-september because they now use an MD5 certificate, apparently Date: Fri, 29 Apr 2016 14:43:03 +0200 User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.1.50 (gnu/linux)
Anssi Saari <address@hidden> writes:

> Some comments on this issue (I originally reported this on
> gnu.emacs.gnus). The machine in question runs Ubuntu 14.04 LTS and
> seems to have two versions of GnuTLS installed, 2.6 and 2.8, 2.6 is
> the default. If I force GnuTLS 2.8 then I have no issue.

Yes, I upgraded this laptop to the newest Ubuntu, and the problem went
away.  So I guess eternal-september uses something too new for the
previous Ubuntu version.

I'll close the bug.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no


--- End Message ---

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