From patchwork Fri Jul 19 21:30:04 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Marko, Peter" X-Patchwork-Id: 46674 X-Patchwork-Delegate: steve@sakoman.com Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 420F5C3DA59 for ; Fri, 19 Jul 2024 21:31:08 +0000 (UTC) Received: from mta-65-227.siemens.flowmailer.net (mta-65-227.siemens.flowmailer.net [185.136.65.227]) by mx.groups.io with SMTP id smtpd.web11.29285.1721424660809645234 for ; Fri, 19 Jul 2024 14:31:01 -0700 Authentication-Results: mx.groups.io; dkim=pass header.i=peter.marko@siemens.com header.s=fm2 header.b=G1E9PFcm; spf=pass (domain: rts-flowmailer.siemens.com, ip: 185.136.65.227, mailfrom: fm-256628-20240719213056818a745b2628af5a25-k6mymd@rts-flowmailer.siemens.com) Received: by mta-65-227.siemens.flowmailer.net with ESMTPSA id 20240719213056818a745b2628af5a25 for ; Fri, 19 Jul 2024 23:30:57 +0200 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; s=fm2; d=siemens.com; i=peter.marko@siemens.com; h=Date:From:Subject:To:Message-ID:MIME-Version:Content-Type:Content-Transfer-Encoding:Cc; bh=VpJt/b/FXyh6RDE72uFmjt06LJ/r9SPpJigVgjn0Zog=; b=G1E9PFcmNVtVA0A63+cExChKBrTQNUqLiUkTsHT4iNZMjbrAk+RzBW95Qt01XL0yDCfc0m ji1xGQOBUW+pnqAjr2prLvkpk6tleJckG5QS/F8LxKRoWARWqdBO3oEr80plF3zgT5ghXUrc zh9xRPILCi/HOeNyV77tLtBYMX6vA=; From: Peter Marko To: openembedded-core@lists.openembedded.org Cc: Peter Marko Subject: [OE-core][kirkstone][PATCH] wpa-supplicant: Patch CVE-2023-52160 Date: Fri, 19 Jul 2024 23:30:04 +0200 Message-Id: <20240719213004.50922-1-peter.marko@siemens.com> MIME-Version: 1.0 X-Flowmailer-Platform: Siemens Feedback-ID: 519:519-256628:519-21489:flowmailer List-Id: X-Webhook-Received: from li982-79.members.linode.com [45.33.32.79] by aws-us-west-2-korg-lkml-1.web.codeaurora.org with HTTPS for ; Fri, 19 Jul 2024 21:31:08 -0000 X-Groupsio-URL: https://lists.openembedded.org/g/openembedded-core/message/202275 From: Peter Marko PEAP client: Update Phase 2 authentication requirements. Also see https://www.top10vpn.com/research/wifi-vulnerabilities/ Patch is copied from scarthgap, the recipes differ too much for cherry-pick even if they have the same version. Signed-off-by: Peter Marko --- ...te-Phase-2-authentication-requiremen.patch | 213 ++++++++++++++++++ .../wpa-supplicant/wpa-supplicant_2.10.bb | 1 + 2 files changed, 214 insertions(+) create mode 100644 meta/recipes-connectivity/wpa-supplicant/wpa-supplicant/0001-PEAP-client-Update-Phase-2-authentication-requiremen.patch diff --git a/meta/recipes-connectivity/wpa-supplicant/wpa-supplicant/0001-PEAP-client-Update-Phase-2-authentication-requiremen.patch b/meta/recipes-connectivity/wpa-supplicant/wpa-supplicant/0001-PEAP-client-Update-Phase-2-authentication-requiremen.patch new file mode 100644 index 0000000000..bc2db972c3 --- /dev/null +++ b/meta/recipes-connectivity/wpa-supplicant/wpa-supplicant/0001-PEAP-client-Update-Phase-2-authentication-requiremen.patch @@ -0,0 +1,213 @@ +From f6f7cead3661ceeef54b21f7e799c0afc98537ec Mon Sep 17 00:00:00 2001 +From: Jouni Malinen +Date: Sat, 8 Jul 2023 19:55:32 +0300 +Subject: [PATCH] PEAP client: Update Phase 2 authentication requirements + +The previous PEAP client behavior allowed the server to skip Phase 2 +authentication with the expectation that the server was authenticated +during Phase 1 through TLS server certificate validation. Various PEAP +specifications are not exactly clear on what the behavior on this front +is supposed to be and as such, this ended up being more flexible than +the TTLS/FAST/TEAP cases. However, this is not really ideal when +unfortunately common misconfiguration of PEAP is used in deployed +devices where the server trust root (ca_cert) is not configured or the +user has an easy option for allowing this validation step to be skipped. + +Change the default PEAP client behavior to be to require Phase 2 +authentication to be successfully completed for cases where TLS session +resumption is not used and the client certificate has not been +configured. Those two exceptions are the main cases where a deployed +authentication server might skip Phase 2 and as such, where a more +strict default behavior could result in undesired interoperability +issues. Requiring Phase 2 authentication will end up disabling TLS +session resumption automatically to avoid interoperability issues. + +Allow Phase 2 authentication behavior to be configured with a new phase1 +configuration parameter option: +'phase2_auth' option can be used to control Phase 2 (i.e., within TLS +tunnel) behavior for PEAP: + * 0 = do not require Phase 2 authentication + * 1 = require Phase 2 authentication when client certificate + (private_key/client_cert) is no used and TLS session resumption was + not used (default) + * 2 = require Phase 2 authentication in all cases + +Signed-off-by: Jouni Malinen + +CVE: CVE-2023-52160 +Upstream-Status: Backport [https://w1.fi/cgit/hostap/commit/?id=8e6485a1bcb0baffdea9e55255a81270b768439c] + +Signed-off-by: Claus Stovgaard +Signed-off-by: Peter Marko +--- + src/eap_peer/eap_config.h | 8 ++++++ + src/eap_peer/eap_peap.c | 40 +++++++++++++++++++++++++++--- + src/eap_peer/eap_tls_common.c | 6 +++++ + src/eap_peer/eap_tls_common.h | 5 ++++ + wpa_supplicant/wpa_supplicant.conf | 7 ++++++ + 5 files changed, 63 insertions(+), 3 deletions(-) + +diff --git a/src/eap_peer/eap_config.h b/src/eap_peer/eap_config.h +index 3238f74..047eec2 100644 +--- a/src/eap_peer/eap_config.h ++++ b/src/eap_peer/eap_config.h +@@ -469,6 +469,14 @@ struct eap_peer_config { + * 1 = use cryptobinding if server supports it + * 2 = require cryptobinding + * ++ * phase2_auth option can be used to control Phase 2 (i.e., within TLS ++ * tunnel) behavior for PEAP: ++ * 0 = do not require Phase 2 authentication ++ * 1 = require Phase 2 authentication when client certificate ++ * (private_key/client_cert) is no used and TLS session resumption was ++ * not used (default) ++ * 2 = require Phase 2 authentication in all cases ++ * + * EAP-WSC (WPS) uses following options: pin=Device_Password and + * uuid=Device_UUID + * +diff --git a/src/eap_peer/eap_peap.c b/src/eap_peer/eap_peap.c +index 12e30df..6080697 100644 +--- a/src/eap_peer/eap_peap.c ++++ b/src/eap_peer/eap_peap.c +@@ -67,6 +67,7 @@ struct eap_peap_data { + u8 cmk[20]; + int soh; /* Whether IF-TNCCS-SOH (Statement of Health; Microsoft NAP) + * is enabled. */ ++ enum { NO_AUTH, FOR_INITIAL, ALWAYS } phase2_auth; + }; + + +@@ -114,6 +115,19 @@ static void eap_peap_parse_phase1(struct eap_peap_data *data, + wpa_printf(MSG_DEBUG, "EAP-PEAP: Require cryptobinding"); + } + ++ if (os_strstr(phase1, "phase2_auth=0")) { ++ data->phase2_auth = NO_AUTH; ++ wpa_printf(MSG_DEBUG, ++ "EAP-PEAP: Do not require Phase 2 authentication"); ++ } else if (os_strstr(phase1, "phase2_auth=1")) { ++ data->phase2_auth = FOR_INITIAL; ++ wpa_printf(MSG_DEBUG, ++ "EAP-PEAP: Require Phase 2 authentication for initial connection"); ++ } else if (os_strstr(phase1, "phase2_auth=2")) { ++ data->phase2_auth = ALWAYS; ++ wpa_printf(MSG_DEBUG, ++ "EAP-PEAP: Require Phase 2 authentication for all cases"); ++ } + #ifdef EAP_TNC + if (os_strstr(phase1, "tnc=soh2")) { + data->soh = 2; +@@ -142,6 +156,7 @@ static void * eap_peap_init(struct eap_sm *sm) + data->force_peap_version = -1; + data->peap_outer_success = 2; + data->crypto_binding = OPTIONAL_BINDING; ++ data->phase2_auth = FOR_INITIAL; + + if (config && config->phase1) + eap_peap_parse_phase1(data, config->phase1); +@@ -454,6 +469,20 @@ static int eap_tlv_validate_cryptobinding(struct eap_sm *sm, + } + + ++static bool peap_phase2_sufficient(struct eap_sm *sm, ++ struct eap_peap_data *data) ++{ ++ if ((data->phase2_auth == ALWAYS || ++ (data->phase2_auth == FOR_INITIAL && ++ !tls_connection_resumed(sm->ssl_ctx, data->ssl.conn) && ++ !data->ssl.client_cert_conf) || ++ data->phase2_eap_started) && ++ !data->phase2_eap_success) ++ return false; ++ return true; ++} ++ ++ + /** + * eap_tlv_process - Process a received EAP-TLV message and generate a response + * @sm: Pointer to EAP state machine allocated with eap_peer_sm_init() +@@ -568,6 +597,11 @@ static int eap_tlv_process(struct eap_sm *sm, struct eap_peap_data *data, + " - force failed Phase 2"); + resp_status = EAP_TLV_RESULT_FAILURE; + ret->decision = DECISION_FAIL; ++ } else if (!peap_phase2_sufficient(sm, data)) { ++ wpa_printf(MSG_INFO, ++ "EAP-PEAP: Server indicated Phase 2 success, but sufficient Phase 2 authentication has not been completed"); ++ resp_status = EAP_TLV_RESULT_FAILURE; ++ ret->decision = DECISION_FAIL; + } else { + resp_status = EAP_TLV_RESULT_SUCCESS; + ret->decision = DECISION_UNCOND_SUCC; +@@ -887,8 +921,7 @@ continue_req: + /* EAP-Success within TLS tunnel is used to indicate + * shutdown of the TLS channel. The authentication has + * been completed. */ +- if (data->phase2_eap_started && +- !data->phase2_eap_success) { ++ if (!peap_phase2_sufficient(sm, data)) { + wpa_printf(MSG_DEBUG, "EAP-PEAP: Phase 2 " + "Success used to indicate success, " + "but Phase 2 EAP was not yet " +@@ -1199,8 +1232,9 @@ static struct wpabuf * eap_peap_process(struct eap_sm *sm, void *priv, + static bool eap_peap_has_reauth_data(struct eap_sm *sm, void *priv) + { + struct eap_peap_data *data = priv; ++ + return tls_connection_established(sm->ssl_ctx, data->ssl.conn) && +- data->phase2_success; ++ data->phase2_success && data->phase2_auth != ALWAYS; + } + + +diff --git a/src/eap_peer/eap_tls_common.c b/src/eap_peer/eap_tls_common.c +index c1837db..a53eeb1 100644 +--- a/src/eap_peer/eap_tls_common.c ++++ b/src/eap_peer/eap_tls_common.c +@@ -239,6 +239,12 @@ static int eap_tls_params_from_conf(struct eap_sm *sm, + + sm->ext_cert_check = !!(params->flags & TLS_CONN_EXT_CERT_CHECK); + ++ if (!phase2) ++ data->client_cert_conf = params->client_cert || ++ params->client_cert_blob || ++ params->private_key || ++ params->private_key_blob; ++ + return 0; + } + +diff --git a/src/eap_peer/eap_tls_common.h b/src/eap_peer/eap_tls_common.h +index 9ac0012..3348634 100644 +--- a/src/eap_peer/eap_tls_common.h ++++ b/src/eap_peer/eap_tls_common.h +@@ -79,6 +79,11 @@ struct eap_ssl_data { + * tls_v13 - Whether TLS v1.3 or newer is used + */ + int tls_v13; ++ ++ /** ++ * client_cert_conf: Whether client certificate has been configured ++ */ ++ bool client_cert_conf; + }; + + +diff --git a/wpa_supplicant/wpa_supplicant.conf b/wpa_supplicant/wpa_supplicant.conf +index 6619d6b..d63f73c 100644 +--- a/wpa_supplicant/wpa_supplicant.conf ++++ b/wpa_supplicant/wpa_supplicant.conf +@@ -1321,6 +1321,13 @@ fast_reauth=1 + # * 0 = do not use cryptobinding (default) + # * 1 = use cryptobinding if server supports it + # * 2 = require cryptobinding ++# 'phase2_auth' option can be used to control Phase 2 (i.e., within TLS ++# tunnel) behavior for PEAP: ++# * 0 = do not require Phase 2 authentication ++# * 1 = require Phase 2 authentication when client certificate ++# (private_key/client_cert) is no used and TLS session resumption was ++# not used (default) ++# * 2 = require Phase 2 authentication in all cases + # EAP-WSC (WPS) uses following options: pin= or + # pbc=1. + # diff --git a/meta/recipes-connectivity/wpa-supplicant/wpa-supplicant_2.10.bb b/meta/recipes-connectivity/wpa-supplicant/wpa-supplicant_2.10.bb index 6e80ac7de3..70f1fd6fc9 100644 --- a/meta/recipes-connectivity/wpa-supplicant/wpa-supplicant_2.10.bb +++ b/meta/recipes-connectivity/wpa-supplicant/wpa-supplicant_2.10.bb @@ -25,6 +25,7 @@ SRC_URI = "http://w1.fi/releases/wpa_supplicant-${PV}.tar.gz \ file://wpa_supplicant.conf \ file://wpa_supplicant.conf-sane \ file://99_wpa_supplicant \ + file://0001-PEAP-client-Update-Phase-2-authentication-requiremen.patch \ " SRC_URI[sha256sum] = "20df7ae5154b3830355f8ab4269123a87affdea59fe74fe9292a91d0d7e17b2f"