From owner-freebsd-security@FreeBSD.ORG Mon Sep 2 17:36:58 2013 Return-Path: Delivered-To: freebsd-security@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTP id 495F2FB8 for ; Mon, 2 Sep 2013 17:36:58 +0000 (UTC) (envelope-from des@des.no) Received: from smtp.des.no (smtp.des.no [194.63.250.102]) by mx1.freebsd.org (Postfix) with ESMTP id 095D62489 for ; Mon, 2 Sep 2013 17:36:57 +0000 (UTC) Received: from nine.des.no (smtp.des.no [194.63.250.102]) by smtp-int.des.no (Postfix) with ESMTP id 1B25D471E; Mon, 2 Sep 2013 17:36:57 +0000 (UTC) Received: by nine.des.no (Postfix, from userid 1001) id BF224293CD; Mon, 2 Sep 2013 19:36:57 +0200 (CEST) From: =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= To: Slawa Olhovchenkov Subject: Re: OpenSSH, PAM and kerberos References: <20130829004844.GA70584@zxy.spb.ru> <86d2ovy64p.fsf@nine.des.no> <20130830100926.GU3796@zxy.spb.ru> <20130830103009.GV3796@zxy.spb.ru> <86sixrwdcv.fsf@nine.des.no> <20130830131455.GW3796@zxy.spb.ru> Date: Mon, 02 Sep 2013 19:36:57 +0200 In-Reply-To: <20130830131455.GW3796@zxy.spb.ru> (Slawa Olhovchenkov's message of "Fri, 30 Aug 2013 17:14:55 +0400") Message-ID: <8661uj9lc6.fsf@nine.des.no> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (berkeley-unix) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Cc: freebsd-security@FreeBSD.org X-BeenThere: freebsd-security@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Security issues \[members-only posting\]" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 02 Sep 2013 17:36:58 -0000 Slawa Olhovchenkov writes: > Hmmm, now I try to compile sshd with UNSUPPORTED_POSIX_THREADS_HACK and > it works (/tmp/krb5cc_NNNN created, kerberosied login to other host > working w/o entering password).=20 So they didn't break the thread version? You shouldn't use it, though, as the rest of OpenSSH is not thread-safe. The threads are only partially synchronized, and service modules may for instance call getpwent() and thereby clobber global state which OpenSSH relies on. DES --=20 Dag-Erling Sm=C3=B8rgrav - des@des.no