From owner-freebsd-ports-bugs@freebsd.org Mon Mar 30 23:45:46 2020 Return-Path: Delivered-To: freebsd-ports-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 ED96826ADE9 for ; Mon, 30 Mar 2020 23:45:45 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.nyi.freebsd.org (mailman.nyi.freebsd.org [IPv6:2610:1c1:1:606c::50:13]) by mx1.freebsd.org (Postfix) with ESMTP id 48rpxN70ZMz3RJP for ; Mon, 30 Mar 2020 23:45:44 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.nyi.freebsd.org (Postfix) id EF90D26ADD3; Mon, 30 Mar 2020 23:45:36 +0000 (UTC) Delivered-To: ports-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 DAAC426ADD1 for ; Mon, 30 Mar 2020 23:45:36 +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 48rpx93dKGz3RFZ for ; Mon, 30 Mar 2020 23:45:29 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id E49D126ACD for ; Mon, 30 Mar 2020 23:45:25 +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 02UNjPNf030163 for ; Mon, 30 Mar 2020 23:45:25 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 02UNjPAI030162 for ports-bugs@FreeBSD.org; Mon, 30 Mar 2020 23:45:25 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: ports-bugs@FreeBSD.org Subject: [Bug 231480] sysutils/grub2-bhyve: "(host)" filesystem is a potential security issue Date: Mon, 30 Mar 2020 23:45:25 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Ports & Packages X-Bugzilla-Component: Individual Port(s) X-Bugzilla-Version: Latest X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: cem@freebsd.org X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: ports-bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: assigned_to Message-ID: In-Reply-To: References: 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-ports-bugs@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Ports bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 30 Mar 2020 23:45:46 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D231480 Conrad Meyer changed: What |Removed |Added ---------------------------------------------------------------------------- Assignee|cem@freebsd.org |ports-bugs@FreeBSD.org --- Comment #5 from Conrad Meyer --- The github PR has been merged, so (host) is now read-only and access limite= d to the unprivileged 'nobody' user. That (?)might be sufficient to resolve this bug as-reported, since most secrets will not be readable by user 'nobody'.= =20 That said, the guest should not have arbitrary 'nobody'-level read access to the host filesystem anyway, so it's still a privilege escalation that needs fixed. Adding chroot()+chdir() (both are essential!) in the non-'-r host' case is pretty trivial, if someone wants to tackle that. I can help provide pointe= rs but I think I'm done with grub-bhyve work myself for the time being. --=20 You are receiving this mail because: You are the assignee for the bug.=