X2Go Bug report logs - #1374
[X2Go-Dev] Bug#1373: kex error : no match for method mac algo

Package: x2goclient; Maintainer for x2goclient is X2Go Developers <x2go-dev@lists.x2go.org>; Source for x2goclient is src:x2goclient.

Reported by: Antenore <antenore@simbiosi.org>

Date: Mon, 18 Feb 2019 11:45:02 UTC

Severity: normal

Merged with 1373

Reply or subscribe to this bug.

Toggle useless messages

View this report as an mbox folder, status mbox, maintainer mbox


Report forwarded to x2go-dev@lists.x2go.org, owner@bugs.x2go.org:
Bug#1374; Package client. (Mon, 18 Feb 2019 11:45:02 GMT) Full text and rfc822 format available.

Acknowledgement sent to Antenore <antenore@simbiosi.org>:
New Bug report received and forwarded. Copy sent to owner@bugs.x2go.org. (Mon, 18 Feb 2019 11:45:02 GMT) Full text and rfc822 format available.

Message #5 received at submit@bugs.x2go.org (full text, mbox):

From: Antenore <antenore@simbiosi.org>
To: Danie de Jager <danie.dejager@striata.com>,1373@bugs.x2go.org,submit@bugs.x2go.org
Subject: Re: [X2Go-Dev] Bug#1373: kex error : no match for method mac algo
Date: Mon, 18 Feb 2019 11:22:16 +0100
Package: client

Hi Daniel,

I'm just a reader, but X2GO uses libssh, that support the Kex you are
using, so first of all, you have to install an updated version of libssh
and eventually check if it has been compiled with the support of these
algorithms.

Normally, I think, on the X2GO side there is nothing more to do.

Have a look here:

https://www.libssh.org/features/

On 18 February 2019 10:07:37 CET, Danie de Jager <danie.dejager@striata.com> wrote:
>Package: client
>
>The client does not support chacha20 as I get this error when I try to
>connect to the X2Go server. I did harden my SSH configuration as guided
>by
>Mozzila
>https://infosec.mozilla.org/guidelines/openssh
>
>When I use defaults it works fine. It seems that the library used by
>X2Go
>is missing some newer methods.
>
>Config:
>server ssh config:
>KexAlgorithms curve25519-sha256@libssh.org
>,ecdh-sha2-nistp521,ecdh-sha2-nistp384,ecdh-sha2-nistp256,diffie-hellman-group-exchange-sha256
>Ciphers chacha20-poly1305@openssh.com,aes256-gcm@openssh.com,
>aes128-gcm@openssh.com,aes256-ctr,aes192-ctr,aes128-ctr
>MACs hmac-sha2-512-etm@openssh.com,hmac-sha2-256-etm@openssh.com,
>umac-128-etm@openssh.com,hmac-sha2-512,hmac-sha2-256,umac-128@openssh.com
>
>Client sshd config:
>Client using default sshd config
>
>or
>
>HashKnownHosts yes
>HostKeyAlgorithms ssh-ed25519-cert-v01@openssh.com,
>ssh-rsa-cert-v01@openssh.com,ssh-ed25519,ssh-rsa,
>ecdsa-sha2-nistp521-cert-v01@openssh.com,
>ecdsa-sha2-nistp384-cert-v01@openssh.com,
>ecdsa-sha2-nistp256-cert-v01@openssh.com
>,ecdsa-sha2-nistp521,ecdsa-sha2-nistp384,ecdsa-sha2-nistp256
>KexAlgorithms curve25519-sha256@libssh.org
>,ecdh-sha2-nistp521,ecdh-sha2-nistp384,ecdh-sha2-nistp256,diffie-hellman-group-exchange-sha256
>MACs hmac-sha2-512-etm@openssh.com,hmac-sha2-256-etm@openssh.com,
>umac-128-etm@openssh.com,hmac-sha2-512,hmac-sha2-256,umac-128@openssh.com
>Ciphers chacha20-poly1305@openssh.com,aes256-gcm@openssh.com,
>aes128-gcm@openssh.com,aes256-ctr,aes192-ctr,aes128-ctr
>
>Error:
>"kex error : no match for method mac algo client->server: server [
>hmac-sha2-512-etm@openssh.com,hmac-sha2-256-etm@openssh.com,
>umac-128-etm@openssh.com,hmac-sha2-512,hmac-sha2-256,umac-128@openssh.com],
>client [hmac-sha1]"
>
>or sometimes
>
>"crypt_set_algorithms2: no crypto algorithm function found for
>chacha20-poly1305@openssh.com"
>
>Let me know if I can provide more information.
>
>Regards,
>*Danie de Jager*


Bug reassigned from package 'client' to 'x2goclient'. Request was from Mike Gabriel <mike.gabriel@das-netzwerkteam.de> to control@bugs.x2go.org. (Mon, 18 Feb 2019 20:55:01 GMT) Full text and rfc822 format available.

Merged 1373 1374 Request was from Mike Gabriel <mike.gabriel@das-netzwerkteam.de> to control@bugs.x2go.org. (Mon, 18 Feb 2019 20:55:01 GMT) Full text and rfc822 format available.

Send a report that this bug log contains spam.


X2Go Developers <owner@bugs.x2go.org>. Last modified: Sat Mar 23 10:54:01 2019; Machine Name: ymir.das-netzwerkteam.de

X2Go Bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.