From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Robert Pluim Newsgroups: gmane.emacs.help Subject: Re: Network Security Manager warns safe renegotiation is not supported Date: Thu, 05 Sep 2019 11:38:41 +0200 Message-ID: References: <87zhjoj4w3.fsf@yujinakao.com> <875zmcdlc9.fsf@fencepost.gnu.org> <20190905075308.GA12767@mail.bsd4all.net> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="259318"; mail-complaints-to="usenet@blaine.gmane.org" Cc: help-gnu-emacs@gnu.org To: "Herbert J. 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Skuhra's message of "Thu, 5 Sep 2019 09:53:08 +0200") X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2a00:1450:4864:20::432 X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.org gmane.emacs.help:121442 Archived-At: >>>>> On Thu, 5 Sep 2019 09:53:08 +0200, "Herbert J. Skuhra" said: Herbert> On Thu, Sep 05, 2019 at 08:51:23AM +0200, Robert Pluim wrote: >> >>>>> On Sun, 01 Sep 2019 12:37:10 -0400, Amin Bandali said: Amin> I=E2=80=99m no security expert, but I don=E2=80=99t think that=E2= =80=99s 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 protoco= l. >>=20 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, renego= tiation 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-i= nfo-ext Amin> for TlS1.3 connections. Please don=E2=80=99t take my word for th= is as, again, Amin> I=E2=80=99m no security/GnuTLS expert. Hopefully others with mor= e knowledge can Amin> chime in to clarify. >>=20 >> Correct. Fixed in emacs-master. Herbert> Hi, Herbert> I am still getting: Herbert> Certificate information Herbert> Issued by: Let's Encrypt Authority X3 Herbert> Issued to: CN=3Delpa.gnu.org Herbert> Hostname: elpa.gnu.org Herbert> Public key: RSA, signature: RSA-SHA256 Herbert> Session: TLS1.3, key: ECDHE-RSA, cipher: AES-256-= GCM, mac: Herbert> AEAD Herbert> Security level: Medium Herbert> Valid: From 2019-08-07 to 2019-11-05 Herbert> The TLS connection to elpa.gnu.org:443 is insecure Herbert> for the following reason: Herbert> * safe renegotiation is not supported, connection not protecte= d from Herbert> impersonators When did you rebuild emacs? 95becaaf3b went in last night. Robert