From owner-freebsd-hackers@freebsd.org Wed Jan 29 09:26:37 2020 Return-Path: Delivered-To: freebsd-hackers@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 29B5F1D0BAA for ; Wed, 29 Jan 2020 09:26:37 +0000 (UTC) (envelope-from gbergling@gmail.com) Received: from mail-wm1-x335.google.com (mail-wm1-x335.google.com [IPv6:2a00:1450:4864:20::335]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1O1" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 486ymD2wCMz4M2H for ; Wed, 29 Jan 2020 09:26:36 +0000 (UTC) (envelope-from gbergling@gmail.com) Received: by mail-wm1-x335.google.com with SMTP id s10so5398535wmh.3 for ; Wed, 29 Jan 2020 01:26:36 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:from:to:subject:message-id :mime-version:content-disposition; bh=RCKXocqfLOjZt0H3yoS16zCUn9IleHKrapFxEjb+yZk=; b=aMJsgU1Jo+FUQjHQk3VfKd9whU+vYMjN3bPL0GgMFAlz3X7kIwZXFhjAiBy0GbN/NI opN1X0/h9hfzwD7WhP0H8uew5VcWpxiotS3S7fiVDoifdGmDnzvpHczebS4qbDLgiW/8 987PktFBZTF3Va+W20olFfVa8oXOcJCWCj4aDdERhSopYH+TgoGNRRWJkm40uKAS7xAx 7/1YOg0Kqi9q5FbLXqL6a/jL5aQS+nxu63PQYNWXcMDAWB2AsslxnHQk/PZvZba8JZbp 0E+5Nj7atFoH0VC16p8W1Nq5IT4N5M9dMx7ZzmXaoIDG6EY/oyCbLloB2ECMkS614g80 SyYw== X-Gm-Message-State: APjAAAXtqGgns9/vD0MugsYDhgm4RWCNxMgZS1/q/OWYm3MpXBPeSZ0O ub7hSaDmUOPka4wzpUgQGfP6Imxy X-Google-Smtp-Source: APXvYqxjipwzHeNCs16KOi/zQmEG2d7beC8t5G26RlKgOIsgX6E8UfDhh1Gufs9fleTVTJxKL8UK+w== X-Received: by 2002:a1c:7203:: with SMTP id n3mr10305599wmc.119.1580289993460; Wed, 29 Jan 2020 01:26:33 -0800 (PST) Received: from lion.0xfce3.net (p4FD3AEF0.dip0.t-ipconnect.de. [79.211.174.240]) by smtp.gmail.com with ESMTPSA id y20sm1508958wmi.25.2020.01.29.01.26.32 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 29 Jan 2020 01:26:32 -0800 (PST) Sender: Gordon Bergling Date: Wed, 29 Jan 2020 10:26:31 +0100 From: Gordon Bergling To: freebsd-hackers@freebsd.org Subject: More secure permissions for /root and /etc/sysctl.conf Message-ID: <20200129092631.GA22505@lion.0xfce3.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-Url: X-Operating-System: FreeBSD 12.1-STABLE amd64 X-Host-Uptime: 10:18AM up 2 days, 20:25, 3 users, load averages: 4.08, 4.01, 3.12 X-Rspamd-Queue-Id: 486ymD2wCMz4M2H X-Spamd-Bar: / X-Spamd-Result: default: False [-0.70 / 15.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; R_SPF_ALLOW(-0.20)[+ip6:2a00:1450:4000::/36:c]; FREEMAIL_FROM(0.00)[googlemail.com]; TO_DN_NONE(0.00)[]; RCVD_COUNT_THREE(0.00)[3]; DKIM_TRACE(0.00)[gmail.com:+]; FORGED_SENDER(0.30)[gbergling@googlemail.com,gbergling@gmail.com]; RECEIVED_SPAMHAUS_PBL(0.00)[240.174.211.79.khpj7ygk5idzvmvt5x4ziurxhy.zen.dq.spamhaus.net : 127.0.0.10]; IP_SCORE(0.00)[ip: (-9.07), ipnet: 2a00:1450::/32(-2.52), asn: 15169(-1.78), country: US(-0.05)]; MIME_TRACE(0.00)[0:+]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:15169, ipnet:2a00:1450::/32, country:US]; FROM_NEQ_ENVFROM(0.00)[gbergling@googlemail.com,gbergling@gmail.com]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-0.999,0]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20161025]; FROM_HAS_DN(0.00)[]; DMARC_POLICY_QUARANTINE(1.50)[googlemail.com : SPF not aligned (relaxed), DKIM not aligned (relaxed),quarantine]; TO_MATCH_ENVRCPT_ALL(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-hackers@freebsd.org]; IP_SCORE_FREEMAIL(0.00)[]; RCPT_COUNT_ONE(0.00)[1]; RCVD_IN_DNSWL_NONE(0.00)[5.3.3.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.0.4.6.8.4.0.5.4.1.0.0.a.2.list.dnswl.org : 127.0.5.0]; RCVD_TLS_ALL(0.00)[] X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 29 Jan 2020 09:26:37 -0000 Hi, I recently stumbled upon the default world readable permissons of /root and /etc/sysctl.conf. I think that it would be more secure to reduce the default permission for /root to 0700 and to 0600 for /etc/sysctl.conf. I prepared a differtial for the proposed change: https://reviews.freebsd.org/D23392 What do you think? Best regards, Gordon