From owner-freebsd-security@freebsd.org Mon May 31 23:08:05 2021 Return-Path: Delivered-To: freebsd-security@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 A05CE6322F6 for ; Mon, 31 May 2021 23:08:05 +0000 (UTC) (envelope-from marquis@roble.com) Received: from mx5.roble.com (mx5.roble.com [209.237.23.5]) (using TLSv1.3 with cipher TLS_CHACHA20_POLY1305_SHA256 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA512 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "mx5.roble.com", Issuer "mx5.roble.com" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4Fv9tr4Sjjz3PMt for ; Mon, 31 May 2021 23:08:04 +0000 (UTC) (envelope-from marquis@roble.com) Received: from roble.com (roble.com [209.237.23.50]) by mx5.roble.com (Postfix) with ESMTP id D04CD73512; Mon, 31 May 2021 16:07:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=roble.com; s=rs060402; t=1622502477; bh=TYmjEUiLh3TJqx+YCxPk4t2Ek2LHkbtzLRFFiBTxutY=; h=Date:From:To:cc:Subject:In-Reply-To:References; b=mjH2FzIAAxmQ6UE7an8oxVI0wajxEQzRg2Y1PzCg3g4/AJoHLiflXoFOQ/mZMzjNK XHqDw0+AXtj8FlKWJN6EuG/ydJADqAIenEVbGKgUPHmhi6rCKiDGeJb64XKCwDTxb0 BD/+1xzRBsuwQu1ZbKSBAHKM5vMSrX9XukU8K5lM= Date: Mon, 31 May 2021 16:07:56 -0700 (PDT) From: Roger Marquis To: Gordon Tetlow cc: Fas Xmut , "freebsd-security@freebsd.org" Subject: Re: sysrc bug In-Reply-To: Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed X-Rspamd-Queue-Id: 4Fv9tr4Sjjz3PMt X-Spamd-Bar: --- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=roble.com header.s=rs060402 header.b=mjH2FzIA; dmarc=pass (policy=none) header.from=roble.com; spf=pass (mx1.freebsd.org: domain of marquis@roble.com designates 209.237.23.5 as permitted sender) smtp.mailfrom=marquis@roble.com X-Spamd-Result: default: False [-4.00 / 15.00]; TO_DN_EQ_ADDR_SOME(0.00)[]; ARC_NA(0.00)[]; R_DKIM_ALLOW(-0.20)[roble.com:s=rs060402]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; TO_DN_SOME(0.00)[]; R_SPF_ALLOW(-0.20)[+ip4:209.237.23.0/24]; MIME_GOOD(-0.10)[text/plain]; RBL_DBL_DONT_QUERY_IPS(0.00)[209.237.23.5:from]; SPAMHAUS_ZRD(0.00)[209.237.23.5:from:127.0.2.255]; TO_MATCH_ENVRCPT_SOME(0.00)[]; DKIM_TRACE(0.00)[roble.com:+]; DMARC_POLICY_ALLOW(-0.50)[roble.com,none]; NEURAL_HAM_SHORT(-1.00)[-1.000]; NEURAL_HAM_LONG(-1.00)[-1.000]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; RCVD_TLS_LAST(0.00)[]; ASN(0.00)[asn:17403, ipnet:209.237.0.0/18, country:US]; FREEMAIL_CC(0.00)[protonmail.com,freebsd.org]; MAILMAN_DEST(0.00)[freebsd-security]; RCVD_COUNT_TWO(0.00)[2] X-BeenThere: freebsd-security@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: "Security issues \[members-only posting\]" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 31 May 2021 23:08:05 -0000 > Also, changing the root shell is bad for many reasons and I'm not > surprised that something doesn't work. Surprised this old myth is still being repeated. Having used various root shells in FreeBSD and other Unux/Linux systems for decades I have to ask specifically what said reasons are, particularly considering /usr/sbin/sysrc starts with "#!/bin/sh" (as does and should every system shell script). Roger Marquis