From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paul Moore Subject: Re: signed tarballs Date: Thu, 13 Apr 2017 17:17:57 -0400 Message-ID: References: <20170406233134.GA32113@motoko> <3197080.UOV2hoHuAT@x2> <20170411104403.GB386@motoko> <1591540.lCI4k97X9x@x2> <20170413202811.GA18419@motoko> <20170413205649.GA19785@motoko> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mx1.redhat.com (ext-mx05.extmail.prod.ext.phx2.redhat.com [10.5.110.29]) by smtp.corp.redhat.com (Postfix) with ESMTPS id F199C60A99 for ; Thu, 13 Apr 2017 21:17:58 +0000 (UTC) Received: from mail-oi0-f70.google.com (mail-oi0-f70.google.com [209.85.218.70]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id AB4D837E64 for ; Thu, 13 Apr 2017 21:17:58 +0000 (UTC) Received: by mail-oi0-f70.google.com with SMTP id n64so52873530oia.8 for ; Thu, 13 Apr 2017 14:17:58 -0700 (PDT) In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-audit-bounces@redhat.com Errors-To: linux-audit-bounces@redhat.com To: William Roberts Cc: linux-audit@redhat.com List-Id: linux-audit@redhat.com On Thu, Apr 13, 2017 at 5:08 PM, William Roberts wrote: > On Apr 13, 2017 14:05, "Paul Moore" wrote: >> Unless Steve has exclusive administrative access to people.redhat.com >> (I think it is safe to say he does not, but correct me if I'm wrong >> Steve ) you can't trust an unsigned checksum regardless of how >> strong the https cert/crypto as the web admin could still tamper with >> the data. > > Sure possible, but not super plausible. You're putting some trust in the > administration of that website to begin with. Come one man, you're smarter than this :) I only called out the malicious admin case, but there are other cases where someone with malicious intent could tamper with the checksum. Some quick examples: hacked webserver, MITM https proxy, etc. -- paul moore security @ redhat