From patchwork Mon Jul 26 17:13:09 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Snowberg X-Patchwork-Id: 12400361 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=-18.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,MSGID_FROM_MTA_HEADER,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 E5BD0C41537 for ; Mon, 26 Jul 2021 17:15:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CDB7160F58 for ; Mon, 26 Jul 2021 17:15:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236539AbhGZQfL (ORCPT ); Mon, 26 Jul 2021 12:35:11 -0400 Received: from mx0b-00069f02.pphosted.com ([205.220.177.32]:26336 "EHLO mx0b-00069f02.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241046AbhGZQdz (ORCPT ); Mon, 26 Jul 2021 12:33:55 -0400 Received: from pps.filterd (m0246630.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.16.0.43/8.16.0.43) with SMTP id 16QHAZ0j029680; Mon, 26 Jul 2021 17:13:43 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : content-type : mime-version; s=corp-2021-07-09; bh=H3k8iZ+ZstgTPCj8dUlmi+/L05F8rsLsy8An/AHnn4A=; b=VJxfrDUE2G8T7eeRvlWuBi/T7X4G7K0FNT2GzsdOQKKDpdmF2mU+2B9u3IuetvGjvFdz 5KkKWSVk/mpAGuWL8Q253WgYBKYLodgR0OQlOsNGVFhpKi1lkP36schsufhKQ6W2D//K t27etmxWfninn0DAUNBBzUovzIujL5pBSH/jae0+fRBKKrJxZgy9AmS2mPKPHAkk9+Ja 3l8vh4XhO5XoKwcUaMwQoRsUiZ9QeP1soK+K5xYvfWtCyY/zk3g3PY39WE0r8+N2NuTq MXm/TmOP1p1w2BzkaRXFBTGLIbbk9zhfW/iEiNJ0f5j7tatzWUmvQrCFTkp9yUx/kR01 1w== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : content-type : mime-version; s=corp-2020-01-29; bh=H3k8iZ+ZstgTPCj8dUlmi+/L05F8rsLsy8An/AHnn4A=; b=dQKagH/WmSnHRTefxEFYJwEmXun94cvnpReFeBFjCwcpmFCXbpvGoQUHYNk/T+b5Jen0 EjNmQczgiPHK68I5eHvCRW/P7mpl5UySvuFE9TxYV4tYAvi4A4/UfE9i2qslRE98v8tI dEMueEKUrXA5ViyXtojEOoEvkdeemf++5Q7f5WvEXcFpWA4Gzq74MT34IHmO773yzU7Y vR0KxbUT9VodLE/0ejus8LZwWK8Y3iAe9p2HLyogQwy0E5mv4TyMLE6tSC6060hjvAt/ /HzEGYIe/uqwkt7R7t9a5ppRwkvvk6REUVGqwdOoFhAUi3Fb3tN2NWiveaLH4HzmQ7QJ 0g== Received: from userp3020.oracle.com (userp3020.oracle.com [156.151.31.79]) by mx0b-00069f02.pphosted.com with ESMTP id 3a1cmb22k0-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 26 Jul 2021 17:13:43 +0000 Received: from pps.filterd (userp3020.oracle.com [127.0.0.1]) by userp3020.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 16QHAihc005213; Mon, 26 Jul 2021 17:13:42 GMT Received: from nam11-dm6-obe.outbound.protection.outlook.com (mail-dm6nam11lp2173.outbound.protection.outlook.com [104.47.57.173]) by userp3020.oracle.com with ESMTP id 3a0vmtcvb0-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 26 Jul 2021 17:13:41 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=GCCpIbtyStvzrbaLeQtWZ7Tb1niCPOYlbJ/dcwMFO2J6plCuV+2FCDIMryMnRPZZQzwiZIkcwSlc4onjYHvW9WhtLguryfCdcICSItX3bVFF1ziCzKvQcnuTGqHWDGEtAavjFKUf8oVRpup2oYCjKlPDrTcnS9jkQnqMNxzX3E4WSV+UwyHHYPRVZAEopD0sJhsiwlcvp3VV3LbHd9rd93RPgi07/i2bkDTVDO6fBq8nFMgbdGdaEINk8PtVeI3BYjrteXUHyVbca96FW5zNjMc5V9jVpoZZI9HyQ8josq+40hxBwdRZSRQJCJ85zhVVNP6F4hVAjnn3Qe1QLvDw5g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=H3k8iZ+ZstgTPCj8dUlmi+/L05F8rsLsy8An/AHnn4A=; b=F5Af7OiUOqNuPX2iskdritGxBTbg1IBRLOjS5m6UphDMSymDlG2El9M2izeKutWWCzfiOfroAJE0BYaIKGbBAmCPfDXsS+APhhjw4uLNUWczNi3Aww2BfMxvuDYCTieZN7P4WQGlHrIs9B4iQCbMj77a1pnmXI1GpEqLJaVaaFJGI6tBQdcamTosyX6UTfegk+4GN1t/jnx0qmB4aKof+5UaRBly+kHDG8sjY1nx+/zstUR0hsFutUg257QypFr2zkaPebeWqAfofF/lprnVsGs79K54m6uRcYYaNxalkh0g19TaxnQgpO/AtZISogJH23jbgXAMCs+NePdhQJ062A== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=oracle.com; dmarc=pass action=none header.from=oracle.com; dkim=pass header.d=oracle.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.onmicrosoft.com; s=selector2-oracle-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=H3k8iZ+ZstgTPCj8dUlmi+/L05F8rsLsy8An/AHnn4A=; b=qjnpwzII5dkRC3FMGdv+s2XXwkHiqnMeT1e6NkyH+XYjCnBOT5V3ihF2VFCQLZVt+giBR+em9rRtFyj3/cjDeyBuvhMsvnfnwLeEDKsLt3hr8ITyQbKr4Uw5Ng7A7Q7cbJqYODtkTS4IUEx3qmg0OKbFj9JGlNGgJ2LFmTU3+yM= Authentication-Results: vger.kernel.org; dkim=none (message not signed) header.d=none;vger.kernel.org; dmarc=none action=none header.from=oracle.com; Received: from CH2PR10MB4150.namprd10.prod.outlook.com (2603:10b6:610:ac::13) by CH0PR10MB5211.namprd10.prod.outlook.com (2603:10b6:610:df::14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4352.26; Mon, 26 Jul 2021 17:13:39 +0000 Received: from CH2PR10MB4150.namprd10.prod.outlook.com ([fe80::1d17:4a7d:92cc:8fc3]) by CH2PR10MB4150.namprd10.prod.outlook.com ([fe80::1d17:4a7d:92cc:8fc3%6]) with mapi id 15.20.4352.031; Mon, 26 Jul 2021 17:13:39 +0000 From: Eric Snowberg To: keyrings@vger.kernel.org, linux-integrity@vger.kernel.org, zohar@linux.ibm.com, dhowells@redhat.com, dwmw2@infradead.org, herbert@gondor.apana.org.au, davem@davemloft.net, jarkko@kernel.org, jmorris@namei.org, serge@hallyn.com Cc: eric.snowberg@oracle.com, keescook@chromium.org, gregkh@linuxfoundation.org, torvalds@linux-foundation.org, scott.branden@broadcom.com, weiyongjun1@huawei.com, nayna@linux.ibm.com, ebiggers@google.com, ardb@kernel.org, nramas@linux.microsoft.com, lszubowi@redhat.com, linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org, linux-security-module@vger.kernel.org, James.Bottomley@HansenPartnership.com, pjones@redhat.com, glin@suse.com, konrad.wilk@oracle.com Subject: [PATCH RFC v2 02/12] KEYS: CA link restriction Date: Mon, 26 Jul 2021 13:13:09 -0400 Message-Id: <20210726171319.3133879-3-eric.snowberg@oracle.com> X-Mailer: git-send-email 2.18.4 In-Reply-To: <20210726171319.3133879-1-eric.snowberg@oracle.com> References: <20210726171319.3133879-1-eric.snowberg@oracle.com> X-ClientProxiedBy: SN6PR01CA0004.prod.exchangelabs.com (2603:10b6:805:b6::17) To CH2PR10MB4150.namprd10.prod.outlook.com (2603:10b6:610:ac::13) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from localhost.us.oracle.com (148.87.23.11) by SN6PR01CA0004.prod.exchangelabs.com (2603:10b6:805:b6::17) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4352.24 via Frontend Transport; Mon, 26 Jul 2021 17:13:36 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: e04c1087-89d6-477f-e2dc-08d95058b61e X-MS-TrafficTypeDiagnostic: CH0PR10MB5211: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:9508; X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:CH2PR10MB4150.namprd10.prod.outlook.com;PTR:;CAT:NONE;SFS:(376002)(366004)(39860400002)(346002)(136003)(396003)(1076003)(2616005)(7416002)(52116002)(7696005)(44832011)(478600001)(36756003)(66946007)(38100700002)(38350700002)(186003)(921005)(956004)(8936002)(2906002)(45080400002)(26005)(86362001)(8676002)(5660300002)(6666004)(4326008)(66556008)(66476007)(6486002)(83380400001)(316002)(107886003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: oracle.com X-MS-Exchange-CrossTenant-Network-Message-Id: e04c1087-89d6-477f-e2dc-08d95058b61e X-MS-Exchange-CrossTenant-AuthSource: CH2PR10MB4150.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 26 Jul 2021 17:13:39.4070 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 4e2c6054-71cb-48f1-bd6c-3a9705aca71b X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: ucIAfJxgd0rvAxHd5TEfN7WX8kEuQDlkZbQGY6bDOo+JplCg87l8TSXfC3QZjg1XyK/S6jC8JquJtpYJPd8KHLfzfKs3fMyOUm8NC40C5FY= X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH0PR10MB5211 X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=10057 signatures=668682 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxscore=0 phishscore=0 suspectscore=0 adultscore=0 malwarescore=0 spamscore=0 mlxlogscore=999 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2104190000 definitions=main-2107260100 X-Proofpoint-GUID: 1ZrtGkhRFXU8avLinyJyMhx4e1V4sCAj X-Proofpoint-ORIG-GUID: 1ZrtGkhRFXU8avLinyJyMhx4e1V4sCAj Precedence: bulk List-ID: X-Mailing-List: keyrings@vger.kernel.org Add a new link restriction. Restrict the addition of keys in a keyring based on the key to be added being a CA (self-signed) or by being vouched for by a key in either the built-in or the secondary trusted keyrings. Signed-off-by: Eric Snowberg --- v1: Initial version v2: Removed secondary keyring references --- certs/system_keyring.c | 21 +++++++++++ crypto/asymmetric_keys/restrict.c | 60 +++++++++++++++++++++++++++++++ include/crypto/public_key.h | 5 +++ include/keys/system_keyring.h | 6 ++++ 4 files changed, 92 insertions(+) diff --git a/certs/system_keyring.c b/certs/system_keyring.c index 692365dee2bd..0a7b16c28a72 100644 --- a/certs/system_keyring.c +++ b/certs/system_keyring.c @@ -21,6 +21,9 @@ static struct key *builtin_trusted_keys; #ifdef CONFIG_SECONDARY_TRUSTED_KEYRING static struct key *secondary_trusted_keys; +#define system_trusted_keys secondary_trusted_keys +#else +#define system_trusted_keys builtin_trusted_keys #endif #ifdef CONFIG_INTEGRITY_PLATFORM_KEYRING static struct key *platform_trusted_keys; @@ -45,6 +48,24 @@ int restrict_link_by_builtin_trusted(struct key *dest_keyring, builtin_trusted_keys); } +/** + * restrict_link_by_system_trusted_or_ca - Restrict keyring + * addition by being a CA or vouched by the system trusted keyrings. + * + * Restrict the addition of keys in a keyring based on the key-to-be-added + * being a CA (self signed) or by being vouched for by a key in either + * the built-in or the secondary system keyrings. + */ +int restrict_link_by_system_trusted_or_ca( + struct key *dest_keyring, + const struct key_type *type, + const union key_payload *payload, + struct key *restrict_key) +{ + return restrict_link_by_ca(dest_keyring, type, payload, + system_trusted_keys); +} + #ifdef CONFIG_SECONDARY_TRUSTED_KEYRING /** * restrict_link_by_builtin_and_secondary_trusted - Restrict keyring diff --git a/crypto/asymmetric_keys/restrict.c b/crypto/asymmetric_keys/restrict.c index 84cefe3b3585..75e4379226e8 100644 --- a/crypto/asymmetric_keys/restrict.c +++ b/crypto/asymmetric_keys/restrict.c @@ -108,6 +108,66 @@ int restrict_link_by_signature(struct key *dest_keyring, return ret; } +/** + * restrict_link_by_ca - Restrict additions to a ring of public keys + * based on it being a CA + * @dest_keyring: Keyring being linked to. + * @type: The type of key being added. + * @payload: The payload of the new key. + * @trusted: A key or ring of keys that can be used to vouch for the new cert. + * + * Check if the new certificate is a CA or if they key can be vouched for + * by keys already linked in the destination keyring or the trusted + * keyring. If one of those is the signing key or it is self signed, then + * mark the new certificate as being ok to link. + * + * Returns 0 if the new certificate was accepted, -ENOKEY if we could not find + * a matching parent certificate in the trusted list. -ENOPKG if the signature + * uses unsupported crypto, or some other error if there is a matching + * certificate but the signature check cannot be performed. + */ +int restrict_link_by_ca(struct key *dest_keyring, + const struct key_type *type, + const union key_payload *payload, + struct key *trust_keyring) +{ + const struct public_key_signature *sig; + const struct public_key *pkey; + struct key *key; + int ret; + + if (type != &key_type_asymmetric) + return -EOPNOTSUPP; + + sig = payload->data[asym_auth]; + if (!sig) + return -ENOPKG; + + if (!sig->auth_ids[0] && !sig->auth_ids[1]) + return -ENOKEY; + + pkey = payload->data[asym_crypto]; + if (!pkey) + return -ENOPKG; + + ret = public_key_verify_signature(pkey, sig); + if (!ret) + return 0; + + if (!trust_keyring) + return -ENOKEY; + + key = find_asymmetric_key(trust_keyring, + sig->auth_ids[0], sig->auth_ids[1], + false); + if (IS_ERR(key)) + return -ENOKEY; + + ret = verify_signature(key, sig); + key_put(key); + return ret; +} + static bool match_either_id(const struct asymmetric_key_ids *pair, const struct asymmetric_key_id *single) { diff --git a/include/crypto/public_key.h b/include/crypto/public_key.h index 47accec68cb0..545af1ea57de 100644 --- a/include/crypto/public_key.h +++ b/include/crypto/public_key.h @@ -71,6 +71,11 @@ extern int restrict_link_by_key_or_keyring_chain(struct key *trust_keyring, const union key_payload *payload, struct key *trusted); +extern int restrict_link_by_ca(struct key *dest_keyring, + const struct key_type *type, + const union key_payload *payload, + struct key *trust_keyring); + extern int query_asymmetric_key(const struct kernel_pkey_params *, struct kernel_pkey_query *); diff --git a/include/keys/system_keyring.h b/include/keys/system_keyring.h index 6acd3cf13a18..2041254d74f4 100644 --- a/include/keys/system_keyring.h +++ b/include/keys/system_keyring.h @@ -28,6 +28,12 @@ static inline __init int load_module_cert(struct key *keyring) #endif +extern int restrict_link_by_system_trusted_or_ca( + struct key *dest_keyring, + const struct key_type *type, + const union key_payload *payload, + struct key *restrict_key); + #ifdef CONFIG_SECONDARY_TRUSTED_KEYRING extern int restrict_link_by_builtin_and_secondary_trusted( struct key *keyring,