From nobody Thu Feb 10 22:16:35 2022 X-Original-To: freebsd-questions@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id D8ACD19C1714 for ; Thu, 10 Feb 2022 22:17:13 +0000 (UTC) (envelope-from kudzu@tenebras.com) Received: from mail-lf1-x12f.google.com (mail-lf1-x12f.google.com [IPv6:2a00:1450:4864:20::12f]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1D4" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4JvrhT158Mz3LWj for ; Thu, 10 Feb 2022 22:17:13 +0000 (UTC) (envelope-from kudzu@tenebras.com) Received: by mail-lf1-x12f.google.com with SMTP id 13so13022099lfp.7 for ; Thu, 10 Feb 2022 14:17:13 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=tenebras-com.20210112.gappssmtp.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=0h2CH8FRZockYxnOEEHX2Xx/XfVeAoC6uzLO/XJTU4M=; b=Ag9njlnsE7pGNc+X24VWboZzKAMHdQWQLeJVxG5gpakhUGEVVThrytgMzckuYn1YkY 5+9mgBn1m374Q9dNPW0hKQ0tfx5WWkjeOZJf4PeJxuYKZs92lxsc3frXHYh3thBGFlAZ Py7LS+cNErCudROtf6c0TTgQK+813Jh9cX2vQdXR6RcntfIvY+WkhB7DK/odnc2B+8iY vdPYpmAwCg3r3t9YSADwdwUxFDov0SQzUGMSPcnKMoLcwQq3flHKRj+GckTkKkGnqTiJ 4PDO70YQLNIKveGy0cmdqOGX2a+VL8S6Pn7s7QsRNLGGVq9/cn3bEEQZT/zCkWqqJlK6 mJfA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=0h2CH8FRZockYxnOEEHX2Xx/XfVeAoC6uzLO/XJTU4M=; b=AKDYPYGXdGfJgEomu0lhkzsWbEe5nDwm0aKorPgbV3w2QWpH/GQUShR6VHX5lEpODX ziCobZzd9j2MnRbLRhTfJAnewbSLBXzpncAT9qv+18NuS/zP4UNZXB8NQ1MUtt+d1fhB fCBX+xGIoHCR6nzaF9OO5satGPfOIZgQ28m9gWSIqmSfv8pKLfO5Pt5Mb3oGo2LoYQJk gl2V8BXpInz4cQ2ljcgwp7+bmFVeVdAiLzQKYzA/wpC1HDTTqBqWc1B5F+rsZSGyTWqS roNaTps7tASs9eYMKv8AzMYBOyHEXqPN9fTG2SQwm32fqhb+T1rjSrUutVOeRBrQhf+T BX5g== X-Gm-Message-State: AOAM531218V7fJrfgVhWAVr6+D/yFZOn67VwIBmN7t4l12SFT+PZOf7K 4e8QmsjZRXAmL3fKxRqDhFrGimwgivURgj8keWqXqPvq9m11zQ== X-Google-Smtp-Source: ABdhPJzyDRsk4DEdkJVVWhIV5zO8s4KN+jR5T4/LwcNF6uqBUeui7sAyKhEIY/++JXJxd1+5X10royVBssRxzqt42J0= X-Received: by 2002:ac2:5092:: with SMTP id f18mr6494236lfm.256.1644531431439; Thu, 10 Feb 2022 14:17:11 -0800 (PST) List-Id: User questions List-Archive: https://lists.freebsd.org/archives/freebsd-questions List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-questions@freebsd.org X-BeenThere: freebsd-questions@freebsd.org MIME-Version: 1.0 References: <1764040332.569007319.1644431923007.JavaMail.zimbra@shaw.ca> In-Reply-To: <1764040332.569007319.1644431923007.JavaMail.zimbra@shaw.ca> From: Michael Sierchio Date: Thu, 10 Feb 2022 14:16:35 -0800 Message-ID: Subject: Re: how to disable support for MD5 in ssh server To: FreeBSD Questions Content-Type: multipart/alternative; boundary="000000000000cb197905d7b14f81" X-Rspamd-Queue-Id: 4JvrhT158Mz3LWj X-Spamd-Bar: --- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=tenebras-com.20210112.gappssmtp.com header.s=20210112 header.b=Ag9njlns; dmarc=none; spf=none (mx1.freebsd.org: domain of kudzu@tenebras.com has no SPF policy when checking 2a00:1450:4864:20::12f) smtp.mailfrom=kudzu@tenebras.com X-Spamd-Result: default: False [-3.28 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-0.98)[-0.982]; R_DKIM_ALLOW(-0.20)[tenebras-com.20210112.gappssmtp.com:s=20210112]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; NEURAL_HAM_LONG(-1.00)[-0.999]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-questions@freebsd.org]; DMARC_NA(0.00)[tenebras.com]; RCPT_COUNT_ONE(0.00)[1]; TO_DN_ALL(0.00)[]; DKIM_TRACE(0.00)[tenebras-com.20210112.gappssmtp.com:+]; NEURAL_HAM_SHORT(-1.00)[-1.000]; RCVD_IN_DNSWL_NONE(0.00)[2a00:1450:4864:20::12f:from]; MLMMJ_DEST(0.00)[freebsd-questions]; R_SPF_NA(0.00)[no SPF record]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+,1:+,2:~]; ASN(0.00)[asn:15169, ipnet:2a00:1450::/32, country:US]; RCVD_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[] X-ThisMailContainsUnwantedMimeParts: N --000000000000cb197905d7b14f81 Content-Type: text/plain; charset="UTF-8" On Wed, Feb 9, 2022 at 10:39 AM Dale Scott wrote: > Hi all, I'm a security novice so I signed up with SecurityScorecard for a > review. > > My scorecard has 3 points subtracted because "The SSH server is configured > to support MD5 algorithm." > > I've read through SSHD_CONFIG(5) and the Ciphers section doesn't include > MD5 in defaults. > > I also don't see MD5 listed in the response to "# sshd -T | grep > "\(ciphers\|macs\|kexalgorithms\)" > I would conclude that SecurityScorecard is bunk, incompetent, a waste of time. sshd -T | grep "\(ciphers\|macs\|kexalgorithms\|hostkeyalgorithms\)" Certainly says what your server is willing to negotiate. Who knows why they came the conclusion they did. --000000000000cb197905d7b14f81 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable


=
On Wed, Feb 9, 2022 at 10:39 AM Dale = Scott <dalescott@shaw.ca> wr= ote:
Hi all, I&#= 39;m a security novice so I signed up with SecurityScorecard for a review.<= br>
My scorecard has 3 points subtracted because "The SSH server is config= ured to support MD5 algorithm."

I've read through SSHD_CONFIG(5) and the Ciphers section doesn't in= clude MD5 in defaults.

I also don't see MD5 listed in the response to "# sshd -T | grep &= quot;\(ciphers\|macs\|kexalgorithms\)"

=


I would = conclude that SecurityScorecard is bunk, incompetent, a waste of time.=C2= =A0=C2=A0

sshd -T | grep "\(ciphers\|macs\|kexalgorithms\|hostkey= algorithms\)"


Certainly sa= ys what your server is willing to negotiate.=C2=A0 Who knows why they came = the conclusion they did.


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