From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_2 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id ED2DDC47257 for ; Wed, 6 May 2020 21:10:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D796E2075E for ; Wed, 6 May 2020 21:10:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729737AbgEFVKY (ORCPT ); Wed, 6 May 2020 17:10:24 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:4834 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729614AbgEFVKX (ORCPT ); Wed, 6 May 2020 17:10:23 -0400 Received: from pps.filterd (m0098410.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 046L2uck009087; Wed, 6 May 2020 17:10:15 -0400 Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com with ESMTP id 30ux6e5gpx-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 06 May 2020 17:10:15 -0400 Received: from m0098410.ppops.net (m0098410.ppops.net [127.0.0.1]) by pps.reinject (8.16.0.36/8.16.0.36) with SMTP id 046L32AI009603; Wed, 6 May 2020 17:10:15 -0400 Received: from ppma01fra.de.ibm.com (46.49.7a9f.ip4.static.sl-reverse.com [159.122.73.70]) by mx0a-001b2d01.pphosted.com with ESMTP id 30ux6e5gnu-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 06 May 2020 17:10:14 -0400 Received: from pps.filterd (ppma01fra.de.ibm.com [127.0.0.1]) by ppma01fra.de.ibm.com (8.16.0.27/8.16.0.27) with SMTP id 046L9irg032318; Wed, 6 May 2020 21:10:12 GMT Received: from b06avi18626390.portsmouth.uk.ibm.com (b06avi18626390.portsmouth.uk.ibm.com [9.149.26.192]) by ppma01fra.de.ibm.com with ESMTP id 30s0g5c241-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 06 May 2020 21:10:12 +0000 Received: from b06wcsmtp001.portsmouth.uk.ibm.com (b06wcsmtp001.portsmouth.uk.ibm.com [9.149.105.160]) by b06avi18626390.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 046L90UQ66584994 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 6 May 2020 21:09:00 GMT Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 56C75A4054; Wed, 6 May 2020 21:10:10 +0000 (GMT) Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 0986BA405F; Wed, 6 May 2020 21:10:09 +0000 (GMT) Received: from localhost.localdomain (unknown [9.85.197.80]) by b06wcsmtp001.portsmouth.uk.ibm.com (Postfix) with ESMTP; Wed, 6 May 2020 21:10:08 +0000 (GMT) Message-ID: <1588799408.4624.28.camel@linux.ibm.com> Subject: Re: [RFC][PATCH 1/3] evm: Move hooks outside LSM infrastructure From: Mimi Zohar To: Roberto Sassu , david.safford@gmail.com, viro@zeniv.linux.org.uk, jmorris@namei.org, John Johansen Cc: linux-fsdevel@vger.kernel.org, linux-integrity@vger.kernel.org, linux-security-module@vger.kernel.org, linux-kernel@vger.kernel.org, silviu.vlasceanu@huawei.com Date: Wed, 06 May 2020 17:10:08 -0400 In-Reply-To: <1588794293.4624.21.camel@linux.ibm.com> References: <20200429073935.11913-1-roberto.sassu@huawei.com> <1588794293.4624.21.camel@linux.ibm.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.20.5 (3.20.5-1.fc24) Mime-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.216,18.0.676 definitions=2020-05-06_09:2020-05-05,2020-05-06 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 adultscore=0 mlxscore=0 bulkscore=0 mlxlogscore=951 malwarescore=0 spamscore=0 suspectscore=0 phishscore=0 priorityscore=1501 clxscore=1015 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2003020000 definitions=main-2005060170 Sender: linux-integrity-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-integrity@vger.kernel.org On Wed, 2020-05-06 at 15:44 -0400, Mimi Zohar wrote: > Since copying the EVM HMAC or original signature isn't applicable, I > would prefer exploring an EVM portable and immutable signature only > solution. To prevent copying the EVM xattr, we added "security.evm" to /etc/xattr.conf.  To support copying just the EVM portable and immutable signatures will require a different solution. Mimi