From owner-freebsd-security@freebsd.org Tue Oct 17 02:35:09 2017 Return-Path: Delivered-To: freebsd-security@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 63E74E27019 for ; Tue, 17 Oct 2017 02:35:09 +0000 (UTC) (envelope-from karl@denninger.net) Received: from colo1.denninger.net (colo1.denninger.net [67.205.158.196]) by mx1.freebsd.org (Postfix) with ESMTP id 24FD67D460 for ; Tue, 17 Oct 2017 02:35:08 +0000 (UTC) (envelope-from karl@denninger.net) Received: from denninger.net (ip68-1-57-197.pn.at.cox.net [68.1.57.197]) by colo1.denninger.net (Postfix) with ESMTP id 52DE72743C for ; Mon, 16 Oct 2017 22:24:46 -0400 (EDT) Received: from [192.168.10.23] (D13.Denninger.Net [192.168.10.23]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by denninger.net (Postfix) with ESMTPSA id 612A82CAF90 for ; Mon, 16 Oct 2017 21:24:44 -0500 (CDT) Subject: Re: WPA2 bugz - One Man's Quick & Dirty Response To: freebsd-security@freebsd.org References: <27180.1508206466@segfault.tristatelogic.com> From: Karl Denninger Message-ID: Date: Mon, 16 Oct 2017 21:24:39 -0500 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 MIME-Version: 1.0 In-Reply-To: <27180.1508206466@segfault.tristatelogic.com> Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-512; boundary="------------ms070403050509010908050303" X-Content-Filtered-By: Mailman/MimeDel 2.1.23 X-BeenThere: freebsd-security@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Security issues \[members-only posting\]" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 17 Oct 2017 02:35:09 -0000 This is a cryptographically signed message in MIME format. --------------ms070403050509010908050303 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On 10/16/2017 21:14, Ronald F. Guilmette wrote: > In message <20171016230525.GA94181@funkthat.com>,=20 > John-Mark Gurney wrote: > >>> In light of the recent WPA2 disclosures, it has occured to me that >>> as of today it may be a Bad Idea for me to be exporting all of this >>> stuff, read/write, to all of 192.168.1.0/24. >> Doesn't matter, if your network is compromized, only strong encryption= >> and authentication will save you.. > Hummm... I *think* that maybe I'm starting to understand now. But mayb= e > not. I'm at a bit of a disadvantage, because like 99.999% of the > population I'm still not entirely 100% clear on what can and can't > be done with these new WPA2 exploits. Please understand that if you can get an AP to hand you a zero'd key (with an intentionally "weak" client) THEN THAT PERSON JUST BECAME ABLE TO ATTACH TO YOUR NETWORK AS AN AUTHORIZED USER. Your network is thus exactly as "secure" as one that has an open RJ45 jack sitting at the end of your driveway and connected to your switch.=C2= =A0 If someone who plugged into that could screw you blind well, that's exactly the situation you're now in. Incidentally, has anyone yet figured out if this vector works on a network configured for machine certificates instead of a PSK?=C2=A0 I'm n= ot certain from what I've looked at yet, and that is bothering me a LOT for what should be obvious reasons. --=20 Karl Denninger karl@denninger.net /The Market Ticker/ /[S/MIME encrypted email preferred]/ --------------ms070403050509010908050303 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgMFADCABgkqhkiG9w0BBwEAAKCC DdgwggagMIIEiKADAgECAhMA5EiKghDOXrvfxYxjITXYDdhIMA0GCSqGSIb3DQEBCwUAMIGL MQswCQYDVQQGEwJVUzEQMA4GA1UECAwHRmxvcmlkYTESMBAGA1UEBwwJTmljZXZpbGxlMRkw FwYDVQQKDBBDdWRhIFN5c3RlbXMgTExDMRgwFgYDVQQLDA9DdWRhIFN5c3RlbXMgQ0ExITAf BgNVBAMMGEN1ZGEgU3lzdGVtcyBMTEMgMjAxNyBDQTAeFw0xNzA4MTcxNjQyMTdaFw0yNzA4 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