From: "Herbert J. Skuhra" <herbert@gojira.at>
To: help-gnu-emacs@gnu.org
Subject: Re: Network Security Manager warns safe renegotiation is not supported
Date: Thu, 5 Sep 2019 09:53:08 +0200 [thread overview]
Message-ID: <20190905075308.GA12767@mail.bsd4all.net> (raw)
In-Reply-To: <m2sgpbme1g.fsf@gmail.com>
On Thu, Sep 05, 2019 at 08:51:23AM +0200, Robert Pluim wrote:
> >>>>> On Sun, 01 Sep 2019 12:37:10 -0400, Amin Bandali <bandali@gnu.org> said:
> Amin> I’m no security expert, but I don’t think that’s a good idea. Setting
> Amin> `gnutls-algorithm-priority' to that value basically tells GnuTLS to skip
> Amin> TLS1.3 altogether, which is the latest version of the TLS protocol.
>
> Amin> The issue seems to be that nsm.el checks for renegotiation_info[1] for
> Amin> TLS1.3 connections as well; but if I understand correctly, renegotiation
> Amin> was removed from TLS1.3, according to [2] and [3]. I *think* the proper
> Amin> way to fix this would be have nsm *not* check for renegotiation-info-ext
> Amin> for TlS1.3 connections. Please don’t take my word for this as, again,
> Amin> I’m no security/GnuTLS expert. Hopefully others with more knowledge can
> Amin> chime in to clarify.
>
> Correct. Fixed in emacs-master.
Hi,
I am still getting:
Certificate information
Issued by: Let's Encrypt Authority X3
Issued to: CN=elpa.gnu.org
Hostname: elpa.gnu.org
Public key: RSA, signature: RSA-SHA256
Session: TLS1.3, key: ECDHE-RSA, cipher: AES-256-GCM, mac:
AEAD
Security level: Medium
Valid: From 2019-08-07 to 2019-11-05
The TLS connection to elpa.gnu.org:443 is insecure
for the following reason:
* safe renegotiation is not supported, connection not protected from
impersonators
--
Herbert
next prev parent reply other threads:[~2019-09-05 7:53 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-31 23:23 Network Security Manager warns safe renegotiation is not supported Yuji Nakao
2019-09-01 15:38 ` Jude DaShiell
2019-09-01 16:37 ` Amin Bandali
2019-09-05 6:51 ` Robert Pluim
2019-09-05 7:53 ` Herbert J. Skuhra [this message]
2019-09-05 9:38 ` Robert Pluim
2019-09-05 10:02 ` Herbert J. Skuhra
2019-09-05 11:22 ` Robert Pluim
2019-09-05 11:51 ` Robert Pluim
[not found] ` <mailman.418.1567684317.2075.help-gnu-emacs@gnu.org>
2019-09-05 12:51 ` Lars Magne Ingebrigtsen
2019-09-05 13:44 ` Robert Pluim
[not found] ` <mailman.423.1567691091.2075.help-gnu-emacs@gnu.org>
2019-09-05 13:51 ` Lars Magne Ingebrigtsen
2019-09-05 14:02 ` Robert Pluim
2019-09-05 19:09 ` Herbert J. Skuhra
2019-09-05 12:03 ` Herbert J. Skuhra
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