From owner-freebsd-hackers@freebsd.org Wed Nov 11 14:52:57 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 5A5B42EC518; Wed, 11 Nov 2020 14:52:57 +0000 (UTC) (envelope-from cneirabustos@gmail.com) Received: from mail-yb1-xb2a.google.com (mail-yb1-xb2a.google.com [IPv6:2607:f8b0:4864:20::b2a]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 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 4CWSQJ4R8dz4sP7; Wed, 11 Nov 2020 14:52:56 +0000 (UTC) (envelope-from cneirabustos@gmail.com) Received: by mail-yb1-xb2a.google.com with SMTP id 2so2139164ybc.12; Wed, 11 Nov 2020 06:52:56 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=nv0WIwh/xY3OfmjQ55DPo/W5LJ/ykrZ/I2Nyo8rz2qM=; b=G9zm43R05po/1tkmE1r3sMD8lU8nlHWHOLwLxaHjFWgxUSj4p3ATg2r3mCoNduQo9P Sf9boet+YjXoLa6M/N/tkTnv1uVdi3K/fdUaJVEC4wpbvfsQpeAVMYXs/Nu4Qg0AHnq4 vffD1X5Ipkn0evRctiav1XB39ZB92eJ6HKGqjsq7uDbXP0nSAnfEs1z3aCPm8+7JNDyh POQ8w/LBIycCDDbDU1Cx93LBCwP0UzSAiPTouvfb7eCqj9FDIiR2Ndew2PxHBaA2NrAr DZkx5meQmi+mayhYv6aK0fmH3s92LcHwZQd1pObogWqY8ORoI9AD73q3xg8yGn2BFl24 3Brw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=nv0WIwh/xY3OfmjQ55DPo/W5LJ/ykrZ/I2Nyo8rz2qM=; b=aP5KSo0JlR9vbpsi3Uk3LjH6ICtDn8lzdBeI9seYSUvtj/mA/aCbnooON7T3KLoef+ PU+Gu76VL4GFIbtWSRzcBvwHTlYjbCJ9wwXV/ZDpmkSnzeZ5lAI3maQ3o0eSgwIp3Hma iwhm1ssmDkgCDkY8ZsRdCKzHBCFsxtyutUgdp6MPC4u4e6wCNfZCh7TCWV7Pz/EUnHlU jvIqJwzpsR5MFvTd3eTjFSuA+zw0AyfO8IqmPL1qQvIKVa44jzDZ6bzk+UIH35FkIbYG cgI6EIgiafGOPZUhXHxVqWD1+PMyeMnYZ7mD+bruvWUsmsPpl5flIXv3hoX/NzgU7TLq aqwQ== X-Gm-Message-State: AOAM531CjLo9jJypm6AEsaE1XfgwWgacAXygNA7lKq08FxHO6nZ6KSM7 wo/pN3jPkiFmhggF79/TJsA6VoDkZL4SDGx++knPyP5o0N0= X-Google-Smtp-Source: ABdhPJw5URBAXBGmjmkVJukr7qPoJ0iVp5vTsmlEaQzd8HZUrbbrS7VzwZdHHEA8xqTY4cjBkk4/YG+VnzppmCqUdhs= X-Received: by 2002:a05:6902:1027:: with SMTP id x7mr34745930ybt.37.1605106375258; Wed, 11 Nov 2020 06:52:55 -0800 (PST) MIME-Version: 1.0 References: <9ffe565d-65cb-cbfa-f0dc-189ee8d7215e@heuristicsystems.com.au> In-Reply-To: <9ffe565d-65cb-cbfa-f0dc-189ee8d7215e@heuristicsystems.com.au> From: carlos antonio neira bustos Date: Wed, 11 Nov 2020 11:52:35 -0300 Message-ID: Subject: Re: Allow PING(8) in jails without raw socket access permissions To: Dewayne Geraghty Cc: freebsd-net , FreeBSD Hackers X-Rspamd-Queue-Id: 4CWSQJ4R8dz4sP7 X-Spamd-Bar: --- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20161025 header.b=G9zm43R0; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (mx1.freebsd.org: domain of cneirabustos@gmail.com designates 2607:f8b0:4864:20::b2a as permitted sender) smtp.mailfrom=cneirabustos@gmail.com X-Spamd-Result: default: False [-4.00 / 15.00]; ARC_NA(0.00)[]; RBL_DBL_DONT_QUERY_IPS(0.00)[2607:f8b0:4864:20::b2a:from]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20161025]; RCVD_TLS_ALL(0.00)[]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36:c]; FREEMAIL_FROM(0.00)[gmail.com]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; NEURAL_HAM_LONG(-1.00)[-1.000]; SPAMHAUS_ZRD(0.00)[2607:f8b0:4864:20::b2a:from:127.0.2.255]; TO_MATCH_ENVRCPT_SOME(0.00)[]; TO_DN_ALL(0.00)[]; DKIM_TRACE(0.00)[gmail.com:+]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; RCVD_IN_DNSWL_NONE(0.00)[2607:f8b0:4864:20::b2a:from]; NEURAL_HAM_SHORT(-1.00)[-1.000]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+,1:+,2:~]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; RCVD_COUNT_TWO(0.00)[2]; MAILMAN_DEST(0.00)[freebsd-net,freebsd-hackers]; DWL_DNSWL_NONE(0.00)[gmail.com:dkim] Content-Type: text/plain; charset="UTF-8" X-Content-Filtered-By: Mailman/MimeDel 2.1.34 X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 11 Nov 2020 14:52:57 -0000 Thank you all for the feedback. I'll resume work on this taking your comments into account. Thanks again! On Fri, Oct 23, 2020 at 10:00 PM Dewayne Geraghty < dewayne.geraghty@heuristicsystems.com.au> wrote: > On 15/10/2020 9:00 am, carlos antonio neira bustos wrote: > > Hello, > > > > I have currently a patch in review with jamie which is the current jail > > maintainer and kyle evans, if anyone else could comment/review this > patch : > > https://reviews.freebsd.org/D26782 > > > > What has been done is the following : > > > > Raw socket access is allowed for ICMP protocol as is required by > > PING(8) but option IP_HDRINCL is not allowed. to accomplish this > > a new privilege PRIV_NETINET_ICMP_ACCESS has been added by default for > > jails. > > > > > > Bests > > _______________________________________________ > > freebsd-net@freebsd.org mailing list > > https://lists.freebsd.org/mailman/listinfo/freebsd-net > > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" > > > Thanks for the heads-up Carlos. I have a use for allowing only icmp > traffic, so its beneficial. > > However I do agree with BZ that it should not be enabled by default, as > it weakens the security model, enabling a broken jail to more easily > enumerate the wider network environment. > > _______________________________________________ > freebsd-hackers@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-hackers > To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org" >