From owner-freebsd-bugs@freebsd.org Sat Sep 28 09:57:36 2019 Return-Path: Delivered-To: freebsd-bugs@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 85E2F1221B0 for ; Sat, 28 Sep 2019 09:57:36 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.nyi.freebsd.org (unknown [127.0.1.3]) by mx1.freebsd.org (Postfix) with ESMTP id 46gPGm1xTfz42t0 for ; Sat, 28 Sep 2019 09:57:36 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.nyi.freebsd.org (Postfix) id 4289D1221AF; Sat, 28 Sep 2019 09:57:36 +0000 (UTC) Delivered-To: bugs@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 425001221AD for ; Sat, 28 Sep 2019 09:57:36 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 46gPGm010wz42sy for ; Sat, 28 Sep 2019 09:57:36 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id D42E727A14 for ; Sat, 28 Sep 2019 09:57:35 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id x8S9vZTE034239 for ; Sat, 28 Sep 2019 09:57:35 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id x8S9vZmn034238 for bugs@FreeBSD.org; Sat, 28 Sep 2019 09:57:35 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 240891] With MAC_BIBA (presumably MAC_MLS as well) sshd cannot set the login class properly Date: Sat, 28 Sep 2019 09:57:35 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 12.0-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: realkay@mailbox.org X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 28 Sep 2019 09:57:36 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D240891 Bug ID: 240891 Summary: With MAC_BIBA (presumably MAC_MLS as well) sshd cannot set the login class properly Product: Base System Version: 12.0-RELEASE Hardware: Any OS: Any Status: New Severity: Affects Some People Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: realkay@mailbox.org I *think* this is the same as https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D177698 from several yea= rs back. With the following login class in /etc/login.conf: admin:\ :label=3Dbiba/low(low-5):\ :tc=3Ddefault: And with the user properly set to that login class (confirmed by grepping /etc/master.passwd), after logging in over ssh: $ id -c && getpmac daemon biba/low(low-5),partition/0 (Note that the login class is set to *daemon* .. it seems to have failed silently to set it and some default was applied) Now if we go back to login.conf and change biba/low(low-5) to biba/low(low-high): $ id -c && getpmac admin biba/low(low-high),partition/0 I am not entirely sure why this is happening, but the practical effect is removing the ability to set login classes for SSH users that cannot reach biba/high, which greatly defeats the purpose of employing MAC_BIBA to ensure the system's integrity. --=20 You are receiving this mail because: You are the assignee for the bug.=