X-Git-Url: https://git.openssl.org/?p=openssl.git;a=blobdiff_plain;f=ssl%2Fstatem%2Fstatem_clnt.c;h=cdd413d1ef798e560d311e51d005d0c80bd55a49;hp=0a68264b6612f0650113a2be3cb2b205d9798977;hb=fc69f32cd6852e60627969138be80cc665a573dd;hpb=0e6161bcae451ed17346c51db1ddc61fea5f3ec2 diff --git a/ssl/statem/statem_clnt.c b/ssl/statem/statem_clnt.c index 0a68264b66..cdd413d1ef 100644 --- a/ssl/statem/statem_clnt.c +++ b/ssl/statem/statem_clnt.c @@ -1,9 +1,9 @@ /* - * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved. + * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved. * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved * Copyright 2005 Nokia. All rights reserved. * - * Licensed under the OpenSSL license (the "License"). You may not use + * Licensed under the Apache License 2.0 (the "License"). You may not use * this file except in compliance with the License. You can obtain a copy * in the file LICENSE in the source distribution or at * https://www.openssl.org/source/license.html @@ -11,8 +11,9 @@ #include #include -#include "../ssl_locl.h" -#include "statem_locl.h" +#include +#include "../ssl_local.h" +#include "statem_local.h" #include #include #include @@ -21,8 +22,10 @@ #include #include #include +#include +#include -static MSG_PROCESS_RETURN tls_process_hello_retry_request(SSL *s, PACKET *pkt); +static MSG_PROCESS_RETURN tls_process_as_hello_retry_request(SSL *s, PACKET *pkt); static MSG_PROCESS_RETURN tls_process_encrypted_extensions(SSL *s, PACKET *pkt); static ossl_inline int cert_req_allowed(SSL *s); @@ -41,8 +44,8 @@ static ossl_inline int cert_req_allowed(SSL *s) { /* TLS does not like anon-DH with client cert */ if ((s->version > SSL3_VERSION - && (s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)) - || (s->s3->tmp.new_cipher->algorithm_auth & (SSL_aSRP | SSL_aPSK))) + && (s->s3.tmp.new_cipher->algorithm_auth & SSL_aNULL)) + || (s->s3.tmp.new_cipher->algorithm_auth & (SSL_aSRP | SSL_aPSK))) return 0; return 1; @@ -57,7 +60,7 @@ static ossl_inline int cert_req_allowed(SSL *s) */ static int key_exchange_expected(SSL *s) { - long alg_k = s->s3->tmp.new_cipher->algorithm_mkey; + long alg_k = s->s3.tmp.new_cipher->algorithm_mkey; /* * Can't skip server key exchange if this is an ephemeral @@ -160,6 +163,26 @@ static int ossl_statem_client13_read_transition(SSL *s, int mt) st->hand_state = TLS_ST_CR_KEY_UPDATE; return 1; } + if (mt == SSL3_MT_CERTIFICATE_REQUEST) { +#if DTLS_MAX_VERSION_INTERNAL != DTLS1_2_VERSION +# error TODO(DTLS1.3): Restore digest for PHA before adding message. +#endif + if (!SSL_IS_DTLS(s) && s->post_handshake_auth == SSL_PHA_EXT_SENT) { + s->post_handshake_auth = SSL_PHA_REQUESTED; + /* + * In TLS, this is called before the message is added to the + * digest. In DTLS, this is expected to be called after adding + * to the digest. Either move the digest restore, or add the + * message here after the swap, or do it after the clientFinished? + */ + if (!tls13_restore_handshake_digest_for_pha(s)) { + /* SSLfatal() already called */ + return 0; + } + st->hand_state = TLS_ST_CR_CERT_REQ; + return 1; + } + } break; } @@ -206,11 +229,6 @@ int ossl_statem_client_read_transition(SSL *s, int mt) st->hand_state = DTLS_ST_CR_HELLO_VERIFY_REQUEST; return 1; } - } else { - if (mt == SSL3_MT_HELLO_RETRY_REQUEST) { - st->hand_state = TLS_ST_CR_HELLO_RETRY_REQUEST; - return 1; - } } break; @@ -224,10 +242,6 @@ int ossl_statem_client_read_transition(SSL *s, int mt) st->hand_state = TLS_ST_CR_SRVR_HELLO; return 1; } - if (mt == SSL3_MT_HELLO_RETRY_REQUEST) { - st->hand_state = TLS_ST_CR_HELLO_RETRY_REQUEST; - return 1; - } break; case TLS_ST_CR_SRVR_HELLO: @@ -258,7 +272,7 @@ int ossl_statem_client_read_transition(SSL *s, int mt) s->hit = 1; st->hand_state = TLS_ST_CR_CHANGE; return 1; - } else if (!(s->s3->tmp.new_cipher->algorithm_auth + } else if (!(s->s3.tmp.new_cipher->algorithm_auth & (SSL_aNULL | SSL_aSRP | SSL_aPSK))) { if (mt == SSL3_MT_CERTIFICATE) { st->hand_state = TLS_ST_CR_CERT; @@ -268,7 +282,7 @@ int ossl_statem_client_read_transition(SSL *s, int mt) ske_expected = key_exchange_expected(s); /* SKE is optional for some PSK ciphersuites */ if (ske_expected - || ((s->s3->tmp.new_cipher->algorithm_mkey & SSL_PSK) + || ((s->s3.tmp.new_cipher->algorithm_mkey & SSL_PSK) && mt == SSL3_MT_SERVER_KEY_EXCHANGE)) { if (mt == SSL3_MT_SERVER_KEY_EXCHANGE) { st->hand_state = TLS_ST_CR_KEY_EXCH; @@ -300,7 +314,7 @@ int ossl_statem_client_read_transition(SSL *s, int mt) case TLS_ST_CR_CERT_STATUS: ske_expected = key_exchange_expected(s); /* SKE is optional for some PSK ciphersuites */ - if (ske_expected || ((s->s3->tmp.new_cipher->algorithm_mkey & SSL_PSK) + if (ske_expected || ((s->s3.tmp.new_cipher->algorithm_mkey & SSL_PSK) && mt == SSL3_MT_SERVER_KEY_EXCHANGE)) { if (mt == SSL3_MT_SERVER_KEY_EXCHANGE) { st->hand_state = TLS_ST_CR_KEY_EXCH; @@ -363,8 +377,23 @@ int ossl_statem_client_read_transition(SSL *s, int mt) err: /* No valid transition found */ - ssl3_send_alert(s, SSL3_AL_FATAL, SSL3_AD_UNEXPECTED_MESSAGE); - SSLerr(SSL_F_OSSL_STATEM_CLIENT_READ_TRANSITION, SSL_R_UNEXPECTED_MESSAGE); + if (SSL_IS_DTLS(s) && mt == SSL3_MT_CHANGE_CIPHER_SPEC) { + BIO *rbio; + + /* + * CCS messages don't have a message sequence number so this is probably + * because of an out-of-order CCS. We'll just drop it. + */ + s->init_num = 0; + s->rwstate = SSL_READING; + rbio = SSL_get_rbio(s); + BIO_clear_retry_flags(rbio); + BIO_set_retry_read(rbio); + return 0; + } + SSLfatal(s, SSL3_AD_UNEXPECTED_MESSAGE, + SSL_F_OSSL_STATEM_CLIENT_READ_TRANSITION, + SSL_R_UNEXPECTED_MESSAGE); return 0; } @@ -385,18 +414,39 @@ static WRITE_TRAN ossl_statem_client13_write_transition(SSL *s) switch (st->hand_state) { default: /* Shouldn't happen */ + SSLfatal(s, SSL_AD_INTERNAL_ERROR, + SSL_F_OSSL_STATEM_CLIENT13_WRITE_TRANSITION, + ERR_R_INTERNAL_ERROR); return WRITE_TRAN_ERROR; - case TLS_ST_CW_CLNT_HELLO: - /* We only hit this in the case of HelloRetryRequest */ - return WRITE_TRAN_FINISHED; + case TLS_ST_CR_CERT_REQ: + if (s->post_handshake_auth == SSL_PHA_REQUESTED) { + st->hand_state = TLS_ST_CW_CERT; + return WRITE_TRAN_CONTINUE; + } + /* + * We should only get here if we received a CertificateRequest after + * we already sent close_notify + */ + if (!ossl_assert((s->shutdown & SSL_SENT_SHUTDOWN) != 0)) { + /* Shouldn't happen - same as default case */ + SSLfatal(s, SSL_AD_INTERNAL_ERROR, + SSL_F_OSSL_STATEM_CLIENT13_WRITE_TRANSITION, + ERR_R_INTERNAL_ERROR); + return WRITE_TRAN_ERROR; + } + st->hand_state = TLS_ST_OK; + return WRITE_TRAN_CONTINUE; case TLS_ST_CR_FINISHED: if (s->early_data_state == SSL_EARLY_DATA_WRITE_RETRY || s->early_data_state == SSL_EARLY_DATA_FINISHED_WRITING) st->hand_state = TLS_ST_PENDING_EARLY_DATA_END; + else if ((s->options & SSL_OP_ENABLE_MIDDLEBOX_COMPAT) != 0 + && s->hello_retry_request == SSL_HRR_NONE) + st->hand_state = TLS_ST_CW_CHANGE; else - st->hand_state = (s->s3->tmp.cert_req != 0) ? TLS_ST_CW_CERT + st->hand_state = (s->s3.tmp.cert_req != 0) ? TLS_ST_CW_CERT : TLS_ST_CW_FINISHED; return WRITE_TRAN_CONTINUE; @@ -408,13 +458,14 @@ static WRITE_TRAN ossl_statem_client13_write_transition(SSL *s) /* Fall through */ case TLS_ST_CW_END_OF_EARLY_DATA: - st->hand_state = (s->s3->tmp.cert_req != 0) ? TLS_ST_CW_CERT + case TLS_ST_CW_CHANGE: + st->hand_state = (s->s3.tmp.cert_req != 0) ? TLS_ST_CW_CERT : TLS_ST_CW_FINISHED; return WRITE_TRAN_CONTINUE; case TLS_ST_CW_CERT: /* If a non-empty Certificate we also send CertificateVerify */ - st->hand_state = (s->s3->tmp.cert_req == 1) ? TLS_ST_CW_CERT_VRFY + st->hand_state = (s->s3.tmp.cert_req == 1) ? TLS_ST_CW_CERT_VRFY : TLS_ST_CW_FINISHED; return WRITE_TRAN_CONTINUE; @@ -423,12 +474,6 @@ static WRITE_TRAN ossl_statem_client13_write_transition(SSL *s) return WRITE_TRAN_CONTINUE; case TLS_ST_CR_KEY_UPDATE: - if (s->key_update != SSL_KEY_UPDATE_NONE) { - st->hand_state = TLS_ST_CW_KEY_UPDATE; - return WRITE_TRAN_CONTINUE; - } - /* Fall through */ - case TLS_ST_CW_KEY_UPDATE: case TLS_ST_CR_SESSION_TICKET: case TLS_ST_CW_FINISHED: @@ -465,6 +510,9 @@ WRITE_TRAN ossl_statem_client_write_transition(SSL *s) switch (st->hand_state) { default: /* Shouldn't happen */ + SSLfatal(s, SSL_AD_INTERNAL_ERROR, + SSL_F_OSSL_STATEM_CLIENT_WRITE_TRANSITION, + ERR_R_INTERNAL_ERROR); return WRITE_TRAN_ERROR; case TLS_ST_OK: @@ -487,7 +535,10 @@ WRITE_TRAN ossl_statem_client_write_transition(SSL *s) * We are assuming this is a TLSv1.3 connection, although we haven't * actually selected a version yet. */ - st->hand_state = TLS_ST_EARLY_DATA; + if ((s->options & SSL_OP_ENABLE_MIDDLEBOX_COMPAT) != 0) + st->hand_state = TLS_ST_CW_CHANGE; + else + st->hand_state = TLS_ST_EARLY_DATA; return WRITE_TRAN_CONTINUE; } /* @@ -496,8 +547,17 @@ WRITE_TRAN ossl_statem_client_write_transition(SSL *s) */ return WRITE_TRAN_FINISHED; - case TLS_ST_CR_HELLO_RETRY_REQUEST: - st->hand_state = TLS_ST_CW_CLNT_HELLO; + case TLS_ST_CR_SRVR_HELLO: + /* + * We only get here in TLSv1.3. We just received an HRR, so issue a + * CCS unless middlebox compat mode is off, or we already issued one + * because we did early data. + */ + if ((s->options & SSL_OP_ENABLE_MIDDLEBOX_COMPAT) != 0 + && s->early_data_state != SSL_EARLY_DATA_FINISHED_WRITING) + st->hand_state = TLS_ST_CW_CHANGE; + else + st->hand_state = TLS_ST_CW_CLNT_HELLO; return WRITE_TRAN_CONTINUE; case TLS_ST_EARLY_DATA: @@ -508,7 +568,7 @@ WRITE_TRAN ossl_statem_client_write_transition(SSL *s) return WRITE_TRAN_CONTINUE; case TLS_ST_CR_SRVR_DONE: - if (s->s3->tmp.cert_req) + if (s->s3.tmp.cert_req) st->hand_state = TLS_ST_CW_CERT; else st->hand_state = TLS_ST_CW_KEY_EXCH; @@ -529,12 +589,12 @@ WRITE_TRAN ossl_statem_client_write_transition(SSL *s) * need to skip the certificate verify message when client's * ECDH public key is sent inside the client certificate. */ - if (s->s3->tmp.cert_req == 1) { + if (s->s3.tmp.cert_req == 1) { st->hand_state = TLS_ST_CW_CERT_VRFY; } else { st->hand_state = TLS_ST_CW_CHANGE; } - if (s->s3->flags & TLS1_FLAGS_SKIP_CERT_VERIFY) { + if (s->s3.flags & TLS1_FLAGS_SKIP_CERT_VERIFY) { st->hand_state = TLS_ST_CW_CHANGE; } return WRITE_TRAN_CONTINUE; @@ -544,15 +604,20 @@ WRITE_TRAN ossl_statem_client_write_transition(SSL *s) return WRITE_TRAN_CONTINUE; case TLS_ST_CW_CHANGE: + if (s->hello_retry_request == SSL_HRR_PENDING) { + st->hand_state = TLS_ST_CW_CLNT_HELLO; + } else if (s->early_data_state == SSL_EARLY_DATA_CONNECTING) { + st->hand_state = TLS_ST_EARLY_DATA; + } else { #if defined(OPENSSL_NO_NEXTPROTONEG) - st-> - hand_state = TLS_ST_CW_FINISHED; -#else - if (!SSL_IS_DTLS(s) && s->s3->npn_seen) - st->hand_state = TLS_ST_CW_NEXT_PROTO; - else st->hand_state = TLS_ST_CW_FINISHED; +#else + if (!SSL_IS_DTLS(s) && s->s3.npn_seen) + st->hand_state = TLS_ST_CW_NEXT_PROTO; + else + st->hand_state = TLS_ST_CW_FINISHED; #endif + } return WRITE_TRAN_CONTINUE; #if !defined(OPENSSL_NO_NEXTPROTONEG) @@ -585,7 +650,7 @@ WRITE_TRAN ossl_statem_client_write_transition(SSL *s) */ if (ssl3_renegotiate_check(s, 1)) { if (!tls_setup_handshake(s)) { - ossl_statem_set_error(s); + /* SSLfatal() already called */ return WRITE_TRAN_ERROR; } st->hand_state = TLS_ST_CW_CLNT_HELLO; @@ -614,7 +679,7 @@ WORK_STATE ossl_statem_client_pre_work(SSL *s, WORK_STATE wst) if (SSL_IS_DTLS(s)) { /* every DTLS ClientHello resets Finished MAC */ if (!ssl3_init_finished_mac(s)) { - ossl_statem_set_error(s); + /* SSLfatal() already called */ return WORK_ERROR; } } @@ -630,8 +695,10 @@ WORK_STATE ossl_statem_client_pre_work(SSL *s, WORK_STATE wst) st->use_timer = 0; } #ifndef OPENSSL_NO_SCTP - if (BIO_dgram_is_sctp(SSL_get_wbio(s))) + if (BIO_dgram_is_sctp(SSL_get_wbio(s))) { + /* Calls SSLfatal() as required */ return dtls_wait_for_dry(s); + } #endif } break; @@ -648,8 +715,11 @@ WORK_STATE ossl_statem_client_pre_work(SSL *s, WORK_STATE wst) /* Fall through */ case TLS_ST_EARLY_DATA: + return tls_finish_handshake(s, wst, 0, 1); + case TLS_ST_OK: - return tls_finish_handshake(s, wst, 1); + /* Calls SSLfatal() as required */ + return tls_finish_handshake(s, wst, 1, 1); } return WORK_FINISHED_CONTINUE; @@ -671,14 +741,6 @@ WORK_STATE ossl_statem_client_post_work(SSL *s, WORK_STATE wst) break; case TLS_ST_CW_CLNT_HELLO: - if (wst == WORK_MORE_A && statem_flush(s) != 1) - return WORK_MORE_A; - - if (SSL_IS_DTLS(s)) { - /* Treat the next message as the first packet */ - s->first_packet = 1; - } - if (s->early_data_state == SSL_EARLY_DATA_CONNECTING && s->max_early_data > 0) { /* @@ -686,9 +748,21 @@ WORK_STATE ossl_statem_client_post_work(SSL *s, WORK_STATE wst) * cipher state function associated with the SSL_METHOD. Instead * we call tls13_change_cipher_state() directly. */ - if (!tls13_change_cipher_state(s, - SSL3_CC_EARLY | SSL3_CHANGE_CIPHER_CLIENT_WRITE)) - return WORK_ERROR; + if ((s->options & SSL_OP_ENABLE_MIDDLEBOX_COMPAT) == 0) { + if (!tls13_change_cipher_state(s, + SSL3_CC_EARLY | SSL3_CHANGE_CIPHER_CLIENT_WRITE)) { + /* SSLfatal() already called */ + return WORK_ERROR; + } + } + /* else we're in compat mode so we delay flushing until after CCS */ + } else if (!statem_flush(s)) { + return WORK_MORE_A; + } + + if (SSL_IS_DTLS(s)) { + /* Treat the next message as the first packet */ + s->first_packet = 1; } break; @@ -702,26 +776,46 @@ WORK_STATE ossl_statem_client_post_work(SSL *s, WORK_STATE wst) break; case TLS_ST_CW_KEY_EXCH: - if (tls_client_key_exchange_post_work(s) == 0) + if (tls_client_key_exchange_post_work(s) == 0) { + /* SSLfatal() already called */ return WORK_ERROR; + } break; case TLS_ST_CW_CHANGE: - s->session->cipher = s->s3->tmp.new_cipher; + if (SSL_IS_TLS13(s) || s->hello_retry_request == SSL_HRR_PENDING) + break; + if (s->early_data_state == SSL_EARLY_DATA_CONNECTING + && s->max_early_data > 0) { + /* + * We haven't selected TLSv1.3 yet so we don't call the change + * cipher state function associated with the SSL_METHOD. Instead + * we call tls13_change_cipher_state() directly. + */ + if (!tls13_change_cipher_state(s, + SSL3_CC_EARLY | SSL3_CHANGE_CIPHER_CLIENT_WRITE)) + return WORK_ERROR; + break; + } + s->session->cipher = s->s3.tmp.new_cipher; #ifdef OPENSSL_NO_COMP s->session->compress_meth = 0; #else - if (s->s3->tmp.new_compression == NULL) + if (s->s3.tmp.new_compression == NULL) s->session->compress_meth = 0; else - s->session->compress_meth = s->s3->tmp.new_compression->id; + s->session->compress_meth = s->s3.tmp.new_compression->id; #endif - if (!s->method->ssl3_enc->setup_key_block(s)) + if (!s->method->ssl3_enc->setup_key_block(s)) { + /* SSLfatal() already called */ return WORK_ERROR; + } if (!s->method->ssl3_enc->change_cipher_state(s, - SSL3_CHANGE_CIPHER_CLIENT_WRITE)) + SSL3_CHANGE_CIPHER_CLIENT_WRITE)) { + /* SSLfatal() already called */ return WORK_ERROR; + } if (SSL_IS_DTLS(s)) { #ifndef OPENSSL_NO_SCTP @@ -754,17 +848,27 @@ WORK_STATE ossl_statem_client_post_work(SSL *s, WORK_STATE wst) return WORK_MORE_B; if (SSL_IS_TLS13(s)) { - if (!s->method->ssl3_enc->change_cipher_state(s, - SSL3_CC_APPLICATION | SSL3_CHANGE_CIPHER_CLIENT_WRITE)) - return WORK_ERROR; + if (!tls13_save_handshake_digest_for_pha(s)) { + /* SSLfatal() already called */ + return WORK_ERROR; + } + if (s->post_handshake_auth != SSL_PHA_REQUESTED) { + if (!s->method->ssl3_enc->change_cipher_state(s, + SSL3_CC_APPLICATION | SSL3_CHANGE_CIPHER_CLIENT_WRITE)) { + /* SSLfatal() already called */ + return WORK_ERROR; + } + } } break; case TLS_ST_CW_KEY_UPDATE: if (statem_flush(s) != 1) return WORK_MORE_A; - if (!tls13_update_key(s, 1)) + if (!tls13_update_key(s, 1)) { + /* SSLfatal() already called */ return WORK_ERROR; + } break; } @@ -787,6 +891,9 @@ int ossl_statem_client_construct_message(SSL *s, WPACKET *pkt, switch (st->hand_state) { default: /* Shouldn't happen */ + SSLfatal(s, SSL_AD_INTERNAL_ERROR, + SSL_F_OSSL_STATEM_CLIENT_CONSTRUCT_MESSAGE, + SSL_R_BAD_HANDSHAKE_STATE); return 0; case TLS_ST_CW_CHANGE: @@ -866,9 +973,6 @@ size_t ossl_statem_client_max_message_size(SSL *s) case DTLS_ST_CR_HELLO_VERIFY_REQUEST: return HELLO_VERIFY_REQUEST_MAX_LENGTH; - case TLS_ST_CR_HELLO_RETRY_REQUEST: - return HELLO_RETRY_REQUEST_MAX_LENGTH; - case TLS_ST_CR_CERT: return s->max_cert_list; @@ -921,6 +1025,9 @@ MSG_PROCESS_RETURN ossl_statem_client_process_message(SSL *s, PACKET *pkt) switch (st->hand_state) { default: /* Shouldn't happen */ + SSLfatal(s, SSL_AD_INTERNAL_ERROR, + SSL_F_OSSL_STATEM_CLIENT_PROCESS_MESSAGE, + ERR_R_INTERNAL_ERROR); return MSG_PROCESS_ERROR; case TLS_ST_CR_SRVR_HELLO: @@ -929,9 +1036,6 @@ MSG_PROCESS_RETURN ossl_statem_client_process_message(SSL *s, PACKET *pkt) case DTLS_ST_CR_HELLO_VERIFY_REQUEST: return dtls_process_hello_verify(s, pkt); - case TLS_ST_CR_HELLO_RETRY_REQUEST: - return tls_process_hello_retry_request(s, pkt); - case TLS_ST_CR_CERT: return tls_process_server_certificate(s, pkt); @@ -981,8 +1085,12 @@ WORK_STATE ossl_statem_client_post_process_message(SSL *s, WORK_STATE wst) switch (st->hand_state) { default: /* Shouldn't happen */ + SSLfatal(s, SSL_AD_INTERNAL_ERROR, + SSL_F_OSSL_STATEM_CLIENT_POST_PROCESS_MESSAGE, + ERR_R_INTERNAL_ERROR); return WORK_ERROR; + case TLS_ST_CR_CERT_VRFY: case TLS_ST_CR_CERT_REQ: return tls_prepare_client_certificate(s, wst); } @@ -993,34 +1101,32 @@ int tls_construct_client_hello(SSL *s, WPACKET *pkt) unsigned char *p; size_t sess_id_len; int i, protverr; - int al = SSL_AD_HANDSHAKE_FAILURE; #ifndef OPENSSL_NO_COMP SSL_COMP *comp; #endif SSL_SESSION *sess = s->session; - - if (!WPACKET_set_max_size(pkt, SSL3_RT_MAX_PLAIN_LENGTH)) { - /* Should not happen */ - SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_HELLO, ERR_R_INTERNAL_ERROR); - return 0; - } + unsigned char *session_id; /* Work out what SSL/TLS/DTLS version to use */ protverr = ssl_set_client_hello_version(s); if (protverr != 0) { - SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_HELLO, protverr); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CLIENT_HELLO, + protverr); return 0; } if (sess == NULL - || !ssl_version_supported(s, sess->ssl_version) + || !ssl_version_supported(s, sess->ssl_version, NULL) || !SSL_SESSION_is_resumable(sess)) { - if (!ssl_get_new_session(s, 0)) + if (s->hello_retry_request == SSL_HRR_NONE + && !ssl_get_new_session(s, 0)) { + /* SSLfatal() already called */ return 0; + } } /* else use the pre-loaded session */ - p = s->s3->client_random; + p = s->s3.client_random; /* * for DTLS if client_random is initialized, reuse it, we are @@ -1029,19 +1135,22 @@ int tls_construct_client_hello(SSL *s, WPACKET *pkt) if (SSL_IS_DTLS(s)) { size_t idx; i = 1; - for (idx = 0; idx < sizeof(s->s3->client_random); idx++) { + for (idx = 0; idx < sizeof(s->s3.client_random); idx++) { if (p[idx]) { i = 0; break; } } } else { - i = s->hello_retry_request == 0; + i = (s->hello_retry_request == SSL_HRR_NONE); } - if (i && ssl_fill_hello_random(s, 0, p, sizeof(s->s3->client_random), - DOWNGRADE_NONE) <= 0) + if (i && ssl_fill_hello_random(s, 0, p, sizeof(s->s3.client_random), + DOWNGRADE_NONE) <= 0) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CLIENT_HELLO, + ERR_R_INTERNAL_ERROR); return 0; + } /*- * version indicates the negotiated version: for example from @@ -1077,22 +1186,45 @@ int tls_construct_client_hello(SSL *s, WPACKET *pkt) * supported_versions extension for the real supported versions. */ if (!WPACKET_put_bytes_u16(pkt, s->client_version) - || !WPACKET_memcpy(pkt, s->s3->client_random, SSL3_RANDOM_SIZE)) { - SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_HELLO, ERR_R_INTERNAL_ERROR); + || !WPACKET_memcpy(pkt, s->s3.client_random, SSL3_RANDOM_SIZE)) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CLIENT_HELLO, + ERR_R_INTERNAL_ERROR); return 0; } /* Session ID */ - if (s->new_session || s->session->ssl_version == TLS1_3_VERSION) - sess_id_len = 0; - else + session_id = s->session->session_id; + if (s->new_session || s->session->ssl_version == TLS1_3_VERSION) { + if (s->version == TLS1_3_VERSION + && (s->options & SSL_OP_ENABLE_MIDDLEBOX_COMPAT) != 0) { + sess_id_len = sizeof(s->tmp_session_id); + s->tmp_session_id_len = sess_id_len; + session_id = s->tmp_session_id; + if (s->hello_retry_request == SSL_HRR_NONE + && RAND_bytes_ex(s->ctx->libctx, s->tmp_session_id, + sess_id_len) <= 0) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, + SSL_F_TLS_CONSTRUCT_CLIENT_HELLO, + ERR_R_INTERNAL_ERROR); + return 0; + } + } else { + sess_id_len = 0; + } + } else { + assert(s->session->session_id_length <= sizeof(s->session->session_id)); sess_id_len = s->session->session_id_length; - if (sess_id_len > sizeof(s->session->session_id) - || !WPACKET_start_sub_packet_u8(pkt) - || (sess_id_len != 0 && !WPACKET_memcpy(pkt, s->session->session_id, + if (s->version == TLS1_3_VERSION) { + s->tmp_session_id_len = sess_id_len; + memcpy(s->tmp_session_id, s->session->session_id, sess_id_len); + } + } + if (!WPACKET_start_sub_packet_u8(pkt) + || (sess_id_len != 0 && !WPACKET_memcpy(pkt, session_id, sess_id_len)) || !WPACKET_close(pkt)) { - SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_HELLO, ERR_R_INTERNAL_ERROR); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CLIENT_HELLO, + ERR_R_INTERNAL_ERROR); return 0; } @@ -1101,38 +1233,46 @@ int tls_construct_client_hello(SSL *s, WPACKET *pkt) if (s->d1->cookie_len > sizeof(s->d1->cookie) || !WPACKET_sub_memcpy_u8(pkt, s->d1->cookie, s->d1->cookie_len)) { - SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_HELLO, ERR_R_INTERNAL_ERROR); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CLIENT_HELLO, + ERR_R_INTERNAL_ERROR); return 0; } } /* Ciphers supported */ if (!WPACKET_start_sub_packet_u16(pkt)) { - SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_HELLO, ERR_R_INTERNAL_ERROR); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CLIENT_HELLO, + ERR_R_INTERNAL_ERROR); return 0; } - /* ssl_cipher_list_to_bytes() raises SSLerr if appropriate */ - if (!ssl_cipher_list_to_bytes(s, SSL_get_ciphers(s), pkt)) + + if (!ssl_cipher_list_to_bytes(s, SSL_get_ciphers(s), pkt)) { + /* SSLfatal() already called */ return 0; + } if (!WPACKET_close(pkt)) { - SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_HELLO, ERR_R_INTERNAL_ERROR); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CLIENT_HELLO, + ERR_R_INTERNAL_ERROR); return 0; } /* COMPRESSION */ if (!WPACKET_start_sub_packet_u8(pkt)) { - SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_HELLO, ERR_R_INTERNAL_ERROR); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CLIENT_HELLO, + ERR_R_INTERNAL_ERROR); return 0; } #ifndef OPENSSL_NO_COMP if (ssl_allow_compression(s) && s->ctx->comp_methods - && (SSL_IS_DTLS(s) || s->s3->tmp.max_ver < TLS1_3_VERSION)) { + && (SSL_IS_DTLS(s) || s->s3.tmp.max_ver < TLS1_3_VERSION)) { int compnum = sk_SSL_COMP_num(s->ctx->comp_methods); for (i = 0; i < compnum; i++) { comp = sk_SSL_COMP_value(s->ctx->comp_methods, i); if (!WPACKET_put_bytes_u8(pkt, comp->id)) { - SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_HELLO, ERR_R_INTERNAL_ERROR); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, + SSL_F_TLS_CONSTRUCT_CLIENT_HELLO, + ERR_R_INTERNAL_ERROR); return 0; } } @@ -1140,13 +1280,14 @@ int tls_construct_client_hello(SSL *s, WPACKET *pkt) #endif /* Add the NULL method */ if (!WPACKET_put_bytes_u8(pkt, 0) || !WPACKET_close(pkt)) { - SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_HELLO, ERR_R_INTERNAL_ERROR); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CLIENT_HELLO, + ERR_R_INTERNAL_ERROR); return 0; } /* TLS extensions */ - if (!tls_construct_extensions(s, pkt, SSL_EXT_CLIENT_HELLO, NULL, 0, &al)) { - SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_HELLO, ERR_R_INTERNAL_ERROR); + if (!tls_construct_extensions(s, pkt, SSL_EXT_CLIENT_HELLO, NULL, 0)) { + /* SSLfatal() already called */ return 0; } @@ -1155,36 +1296,31 @@ int tls_construct_client_hello(SSL *s, WPACKET *pkt) MSG_PROCESS_RETURN dtls_process_hello_verify(SSL *s, PACKET *pkt) { - int al; size_t cookie_len; PACKET cookiepkt; if (!PACKET_forward(pkt, 2) || !PACKET_get_length_prefixed_1(pkt, &cookiepkt)) { - al = SSL_AD_DECODE_ERROR; - SSLerr(SSL_F_DTLS_PROCESS_HELLO_VERIFY, SSL_R_LENGTH_MISMATCH); - goto f_err; + SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_DTLS_PROCESS_HELLO_VERIFY, + SSL_R_LENGTH_MISMATCH); + return MSG_PROCESS_ERROR; } cookie_len = PACKET_remaining(&cookiepkt); if (cookie_len > sizeof(s->d1->cookie)) { - al = SSL_AD_ILLEGAL_PARAMETER; - SSLerr(SSL_F_DTLS_PROCESS_HELLO_VERIFY, SSL_R_LENGTH_TOO_LONG); - goto f_err; + SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_DTLS_PROCESS_HELLO_VERIFY, + SSL_R_LENGTH_TOO_LONG); + return MSG_PROCESS_ERROR; } if (!PACKET_copy_bytes(&cookiepkt, s->d1->cookie, cookie_len)) { - al = SSL_AD_DECODE_ERROR; - SSLerr(SSL_F_DTLS_PROCESS_HELLO_VERIFY, SSL_R_LENGTH_MISMATCH); - goto f_err; + SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_DTLS_PROCESS_HELLO_VERIFY, + SSL_R_LENGTH_MISMATCH); + return MSG_PROCESS_ERROR; } s->d1->cookie_len = cookie_len; return MSG_PROCESS_FINISHED_READING; - f_err: - ssl3_send_alert(s, SSL3_AL_FATAL, al); - ossl_statem_set_error(s); - return MSG_PROCESS_ERROR; } static int set_client_ciphersuite(SSL *s, const unsigned char *cipherchars) @@ -1196,7 +1332,8 @@ static int set_client_ciphersuite(SSL *s, const unsigned char *cipherchars) c = ssl_get_cipher_by_char(s, cipherchars, 0); if (c == NULL) { /* unknown cipher */ - SSLerr(SSL_F_SET_CLIENT_CIPHERSUITE, SSL_R_UNKNOWN_CIPHER_RETURNED); + SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_SET_CLIENT_CIPHERSUITE, + SSL_R_UNKNOWN_CIPHER_RETURNED); return 0; } /* @@ -1204,7 +1341,8 @@ static int set_client_ciphersuite(SSL *s, const unsigned char *cipherchars) * or it's not allowed for the selected protocol. So we return an error. */ if (ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_CHECK, 1)) { - SSLerr(SSL_F_SET_CLIENT_CIPHERSUITE, SSL_R_WRONG_CIPHER_RETURNED); + SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_SET_CLIENT_CIPHERSUITE, + SSL_R_WRONG_CIPHER_RETURNED); return 0; } @@ -1212,14 +1350,16 @@ static int set_client_ciphersuite(SSL *s, const unsigned char *cipherchars) i = sk_SSL_CIPHER_find(sk, c); if (i < 0) { /* we did not say we would use this cipher */ - SSLerr(SSL_F_SET_CLIENT_CIPHERSUITE, SSL_R_WRONG_CIPHER_RETURNED); + SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_SET_CLIENT_CIPHERSUITE, + SSL_R_WRONG_CIPHER_RETURNED); return 0; } - if (SSL_IS_TLS13(s) && s->s3->tmp.new_cipher != NULL - && s->s3->tmp.new_cipher->id != c->id) { + if (SSL_IS_TLS13(s) && s->s3.tmp.new_cipher != NULL + && s->s3.tmp.new_cipher->id != c->id) { /* ServerHello selected a different ciphersuite to that in the HRR */ - SSLerr(SSL_F_SET_CLIENT_CIPHERSUITE, SSL_R_WRONG_CIPHER_RETURNED); + SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_SET_CLIENT_CIPHERSUITE, + SSL_R_WRONG_CIPHER_RETURNED); return 0; } @@ -1236,10 +1376,11 @@ static int set_client_ciphersuite(SSL *s, const unsigned char *cipherchars) * In TLSv1.3 it is valid for the server to select a different * ciphersuite as long as the hash is the same. */ - if (ssl_md(c->algorithm2) - != ssl_md(s->session->cipher->algorithm2)) { - SSLerr(SSL_F_SET_CLIENT_CIPHERSUITE, - SSL_R_CIPHERSUITE_DIGEST_HAS_CHANGED); + if (ssl_md(s->ctx, c->algorithm2) + != ssl_md(s->ctx, s->session->cipher->algorithm2)) { + SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, + SSL_F_SET_CLIENT_CIPHERSUITE, + SSL_R_CIPHERSUITE_DIGEST_HAS_CHANGED); return 0; } } else { @@ -1247,12 +1388,12 @@ static int set_client_ciphersuite(SSL *s, const unsigned char *cipherchars) * Prior to TLSv1.3 resuming a session always meant using the same * ciphersuite. */ - SSLerr(SSL_F_SET_CLIENT_CIPHERSUITE, - SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED); + SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_SET_CLIENT_CIPHERSUITE, + SSL_R_OLD_SESSION_CIPHER_NOT_RETURNED); return 0; } } - s->s3->tmp.new_cipher = c; + s->s3.tmp.new_cipher = c; return 1; } @@ -1262,109 +1403,151 @@ MSG_PROCESS_RETURN tls_process_server_hello(SSL *s, PACKET *pkt) PACKET session_id, extpkt; size_t session_id_len; const unsigned char *cipherchars; - int al = SSL_AD_INTERNAL_ERROR; + int hrr = 0; unsigned int compression; unsigned int sversion; unsigned int context; - int protverr, discard; RAW_EXTENSION *extensions = NULL; #ifndef OPENSSL_NO_COMP SSL_COMP *comp; #endif if (!PACKET_get_net_2(pkt, &sversion)) { - al = SSL_AD_DECODE_ERROR; - SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, SSL_R_LENGTH_MISMATCH); - goto f_err; + SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PROCESS_SERVER_HELLO, + SSL_R_LENGTH_MISMATCH); + goto err; } /* load the server random */ - if (!PACKET_copy_bytes(pkt, s->s3->server_random, SSL3_RANDOM_SIZE)) { - al = SSL_AD_DECODE_ERROR; - SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, SSL_R_LENGTH_MISMATCH); - goto f_err; - } - - /* - * We do this immediately so we know what format the ServerHello is in. - * Must be done after reading the random data so we can check for the - * TLSv1.3 downgrade sentinels - */ - protverr = ssl_choose_client_version(s, sversion, 1, &al); - if (protverr != 0) { - SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, protverr); - goto f_err; - } - - /* - * In TLSv1.3 a ServerHello message signals a key change so the end of the - * message must be on a record boundary. - */ - if (SSL_IS_TLS13(s) && RECORD_LAYER_processed_read_pending(&s->rlayer)) { - al = SSL_AD_UNEXPECTED_MESSAGE; - SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, SSL_R_NOT_ON_RECORD_BOUNDARY); - goto f_err; + if (s->version == TLS1_3_VERSION + && sversion == TLS1_2_VERSION + && PACKET_remaining(pkt) >= SSL3_RANDOM_SIZE + && memcmp(hrrrandom, PACKET_data(pkt), SSL3_RANDOM_SIZE) == 0) { + s->hello_retry_request = SSL_HRR_PENDING; + hrr = 1; + if (!PACKET_forward(pkt, SSL3_RANDOM_SIZE)) { + SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PROCESS_SERVER_HELLO, + SSL_R_LENGTH_MISMATCH); + goto err; + } + } else { + if (!PACKET_copy_bytes(pkt, s->s3.server_random, SSL3_RANDOM_SIZE)) { + SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PROCESS_SERVER_HELLO, + SSL_R_LENGTH_MISMATCH); + goto err; + } } /* Get the session-id. */ - if (!SSL_IS_TLS13(s)) { - if (!PACKET_get_length_prefixed_1(pkt, &session_id)) { - al = SSL_AD_DECODE_ERROR; - SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, SSL_R_LENGTH_MISMATCH); - goto f_err; - } - session_id_len = PACKET_remaining(&session_id); - if (session_id_len > sizeof s->session->session_id - || session_id_len > SSL3_SESSION_ID_SIZE) { - al = SSL_AD_ILLEGAL_PARAMETER; - SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, - SSL_R_SSL3_SESSION_ID_TOO_LONG); - goto f_err; - } - } else { - PACKET_null_init(&session_id); - session_id_len = 0; + if (!PACKET_get_length_prefixed_1(pkt, &session_id)) { + SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PROCESS_SERVER_HELLO, + SSL_R_LENGTH_MISMATCH); + goto err; + } + session_id_len = PACKET_remaining(&session_id); + if (session_id_len > sizeof(s->session->session_id) + || session_id_len > SSL3_SESSION_ID_SIZE) { + SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_TLS_PROCESS_SERVER_HELLO, + SSL_R_SSL3_SESSION_ID_TOO_LONG); + goto err; } if (!PACKET_get_bytes(pkt, &cipherchars, TLS_CIPHER_LEN)) { - SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, SSL_R_LENGTH_MISMATCH); - al = SSL_AD_DECODE_ERROR; - goto f_err; + SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PROCESS_SERVER_HELLO, + SSL_R_LENGTH_MISMATCH); + goto err; } - if (!SSL_IS_TLS13(s)) { - if (!PACKET_get_1(pkt, &compression)) { - SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, SSL_R_LENGTH_MISMATCH); - al = SSL_AD_DECODE_ERROR; - goto f_err; - } - } else { - compression = 0; + if (!PACKET_get_1(pkt, &compression)) { + SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PROCESS_SERVER_HELLO, + SSL_R_LENGTH_MISMATCH); + goto err; } /* TLS extensions */ - if (PACKET_remaining(pkt) == 0) { + if (PACKET_remaining(pkt) == 0 && !hrr) { PACKET_null_init(&extpkt); } else if (!PACKET_as_length_prefixed_2(pkt, &extpkt) || PACKET_remaining(pkt) != 0) { - al = SSL_AD_DECODE_ERROR; - SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, SSL_R_BAD_LENGTH); - goto f_err; + SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PROCESS_SERVER_HELLO, + SSL_R_BAD_LENGTH); + goto err; + } + + if (!hrr) { + if (!tls_collect_extensions(s, &extpkt, + SSL_EXT_TLS1_2_SERVER_HELLO + | SSL_EXT_TLS1_3_SERVER_HELLO, + &extensions, NULL, 1)) { + /* SSLfatal() already called */ + goto err; + } + + if (!ssl_choose_client_version(s, sversion, extensions)) { + /* SSLfatal() already called */ + goto err; + } + } + + if (SSL_IS_TLS13(s) || hrr) { + if (compression != 0) { + SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, + SSL_F_TLS_PROCESS_SERVER_HELLO, + SSL_R_INVALID_COMPRESSION_ALGORITHM); + goto err; + } + + if (session_id_len != s->tmp_session_id_len + || memcmp(PACKET_data(&session_id), s->tmp_session_id, + session_id_len) != 0) { + SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, + SSL_F_TLS_PROCESS_SERVER_HELLO, SSL_R_INVALID_SESSION_ID); + goto err; + } } + if (hrr) { + if (!set_client_ciphersuite(s, cipherchars)) { + /* SSLfatal() already called */ + goto err; + } + + return tls_process_as_hello_retry_request(s, &extpkt); + } + + /* + * Now we have chosen the version we need to check again that the extensions + * are appropriate for this version. + */ context = SSL_IS_TLS13(s) ? SSL_EXT_TLS1_3_SERVER_HELLO : SSL_EXT_TLS1_2_SERVER_HELLO; - if (!tls_collect_extensions(s, &extpkt, context, &extensions, &al, NULL, 1)) - goto f_err; + if (!tls_validate_all_contexts(s, context, extensions)) { + SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_TLS_PROCESS_SERVER_HELLO, + SSL_R_BAD_EXTENSION); + goto err; + } s->hit = 0; if (SSL_IS_TLS13(s)) { + /* + * In TLSv1.3 a ServerHello message signals a key change so the end of + * the message must be on a record boundary. + */ + if (RECORD_LAYER_processed_read_pending(&s->rlayer)) { + SSLfatal(s, SSL_AD_UNEXPECTED_MESSAGE, + SSL_F_TLS_PROCESS_SERVER_HELLO, + SSL_R_NOT_ON_RECORD_BOUNDARY); + goto err; + } + /* This will set s->hit if we are resuming */ if (!tls_parse_extension(s, TLSEXT_IDX_psk, SSL_EXT_TLS1_3_SERVER_HELLO, - extensions, NULL, 0, &al)) - goto f_err; + extensions, NULL, 0)) { + /* SSLfatal() already called */ + goto err; + } } else { /* * Check if we can resume the session based on external pre-shared @@ -1396,9 +1579,9 @@ MSG_PROCESS_RETURN tls_process_server_hello(SSL *s, PACKET *pkt) s->session->cipher = pref_cipher ? pref_cipher : ssl_get_cipher_by_char(s, cipherchars, 0); } else { - SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, ERR_R_INTERNAL_ERROR); - al = SSL_AD_INTERNAL_ERROR; - goto f_err; + SSLfatal(s, SSL_AD_INTERNAL_ERROR, + SSL_F_TLS_PROCESS_SERVER_HELLO, ERR_R_INTERNAL_ERROR); + goto err; } } @@ -1413,10 +1596,10 @@ MSG_PROCESS_RETURN tls_process_server_hello(SSL *s, PACKET *pkt) if (s->sid_ctx_length != s->session->sid_ctx_length || memcmp(s->session->sid_ctx, s->sid_ctx, s->sid_ctx_length)) { /* actually a client application bug */ - al = SSL_AD_ILLEGAL_PARAMETER; - SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, - SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT); - goto f_err; + SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, + SSL_F_TLS_PROCESS_SERVER_HELLO, + SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT); + goto err; } } else { /* @@ -1426,94 +1609,98 @@ MSG_PROCESS_RETURN tls_process_server_hello(SSL *s, PACKET *pkt) * so the PAC-based session secret is always preserved. It'll be * overwritten if the server refuses resumption. */ - if (s->session->session_id_length > 0 - || (SSL_IS_TLS13(s) - && s->session->ext.tick_identity - != TLSEXT_PSK_BAD_IDENTITY)) { - CRYPTO_atomic_add(&s->session_ctx->stats.sess_miss, 1, &discard, - s->session_ctx->lock); + if (s->session->session_id_length > 0) { + tsan_counter(&s->session_ctx->stats.sess_miss); if (!ssl_get_new_session(s, 0)) { - goto f_err; + /* SSLfatal() already called */ + goto err; } } s->session->ssl_version = s->version; - s->session->session_id_length = session_id_len; - /* session_id_len could be 0 */ - if (session_id_len > 0) - memcpy(s->session->session_id, PACKET_data(&session_id), - session_id_len); + /* + * In TLSv1.2 and below we save the session id we were sent so we can + * resume it later. In TLSv1.3 the session id we were sent is just an + * echo of what we originally sent in the ClientHello and should not be + * used for resumption. + */ + if (!SSL_IS_TLS13(s)) { + s->session->session_id_length = session_id_len; + /* session_id_len could be 0 */ + if (session_id_len > 0) + memcpy(s->session->session_id, PACKET_data(&session_id), + session_id_len); + } } /* Session version and negotiated protocol version should match */ if (s->version != s->session->ssl_version) { - al = SSL_AD_PROTOCOL_VERSION; - - SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, - SSL_R_SSL_SESSION_VERSION_MISMATCH); - goto f_err; + SSLfatal(s, SSL_AD_PROTOCOL_VERSION, SSL_F_TLS_PROCESS_SERVER_HELLO, + SSL_R_SSL_SESSION_VERSION_MISMATCH); + goto err; } /* * Now that we know the version, update the check to see if it's an allowed * version. */ - s->s3->tmp.min_ver = s->version; - s->s3->tmp.max_ver = s->version; + s->s3.tmp.min_ver = s->version; + s->s3.tmp.max_ver = s->version; if (!set_client_ciphersuite(s, cipherchars)) { - al = SSL_AD_ILLEGAL_PARAMETER; - goto f_err; + /* SSLfatal() already called */ + goto err; } #ifdef OPENSSL_NO_COMP if (compression != 0) { - al = SSL_AD_ILLEGAL_PARAMETER; - SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, - SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM); - goto f_err; + SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_TLS_PROCESS_SERVER_HELLO, + SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM); + goto err; } /* * If compression is disabled we'd better not try to resume a session * using compression. */ if (s->session->compress_meth != 0) { - SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, SSL_R_INCONSISTENT_COMPRESSION); - goto f_err; + SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_TLS_PROCESS_SERVER_HELLO, + SSL_R_INCONSISTENT_COMPRESSION); + goto err; } #else if (s->hit && compression != s->session->compress_meth) { - al = SSL_AD_ILLEGAL_PARAMETER; - SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, - SSL_R_OLD_SESSION_COMPRESSION_ALGORITHM_NOT_RETURNED); - goto f_err; + SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_TLS_PROCESS_SERVER_HELLO, + SSL_R_OLD_SESSION_COMPRESSION_ALGORITHM_NOT_RETURNED); + goto err; } if (compression == 0) comp = NULL; else if (!ssl_allow_compression(s)) { - al = SSL_AD_ILLEGAL_PARAMETER; - SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, SSL_R_COMPRESSION_DISABLED); - goto f_err; + SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_TLS_PROCESS_SERVER_HELLO, + SSL_R_COMPRESSION_DISABLED); + goto err; } else { comp = ssl3_comp_find(s->ctx->comp_methods, compression); } if (compression != 0 && comp == NULL) { - al = SSL_AD_ILLEGAL_PARAMETER; - SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, - SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM); - goto f_err; + SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_TLS_PROCESS_SERVER_HELLO, + SSL_R_UNSUPPORTED_COMPRESSION_ALGORITHM); + goto err; } else { - s->s3->tmp.new_compression = comp; + s->s3.tmp.new_compression = comp; } #endif - if (!tls_parse_all_extensions(s, context, extensions, NULL, 0, &al, 1)) - goto f_err; + if (!tls_parse_all_extensions(s, context, extensions, NULL, 0, 1)) { + /* SSLfatal() already called */ + goto err; + } #ifndef OPENSSL_NO_SCTP if (SSL_IS_DTLS(s) && s->hit) { unsigned char sctpauthkey[64]; char labelbuffer[sizeof(DTLS1_SCTP_AUTH_LABEL)]; + size_t labellen; /* * Add new shared key for SCTP-Auth, will be ignored if @@ -1522,11 +1709,19 @@ MSG_PROCESS_RETURN tls_process_server_hello(SSL *s, PACKET *pkt) memcpy(labelbuffer, DTLS1_SCTP_AUTH_LABEL, sizeof(DTLS1_SCTP_AUTH_LABEL)); + /* Don't include the terminating zero. */ + labellen = sizeof(labelbuffer) - 1; + if (s->mode & SSL_MODE_DTLS_SCTP_LABEL_LENGTH_BUG) + labellen += 1; + if (SSL_export_keying_material(s, sctpauthkey, sizeof(sctpauthkey), labelbuffer, - sizeof(labelbuffer), NULL, 0, 0) <= 0) - goto f_err; + labellen, NULL, 0, 0) <= 0) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_PROCESS_SERVER_HELLO, + ERR_R_INTERNAL_ERROR); + goto err; + } BIO_ctrl(SSL_get_wbio(s), BIO_CTRL_DGRAM_SCTP_ADD_AUTH_KEY, @@ -1542,42 +1737,21 @@ MSG_PROCESS_RETURN tls_process_server_hello(SSL *s, PACKET *pkt) && (!s->method->ssl3_enc->setup_key_block(s) || !s->method->ssl3_enc->change_cipher_state(s, SSL3_CC_HANDSHAKE | SSL3_CHANGE_CIPHER_CLIENT_READ))) { - al = SSL_AD_INTERNAL_ERROR; - SSLerr(SSL_F_TLS_PROCESS_SERVER_HELLO, SSL_R_CANNOT_CHANGE_CIPHER); - goto f_err; + /* SSLfatal() already called */ + goto err; } OPENSSL_free(extensions); return MSG_PROCESS_CONTINUE_READING; - f_err: - ssl3_send_alert(s, SSL3_AL_FATAL, al); - ossl_statem_set_error(s); + err: OPENSSL_free(extensions); return MSG_PROCESS_ERROR; } -static MSG_PROCESS_RETURN tls_process_hello_retry_request(SSL *s, PACKET *pkt) +static MSG_PROCESS_RETURN tls_process_as_hello_retry_request(SSL *s, + PACKET *extpkt) { - unsigned int sversion; - const unsigned char *cipherchars; RAW_EXTENSION *extensions = NULL; - int al; - PACKET extpkt; - - if (!PACKET_get_net_2(pkt, &sversion)) { - al = SSL_AD_DECODE_ERROR; - SSLerr(SSL_F_TLS_PROCESS_HELLO_RETRY_REQUEST, SSL_R_LENGTH_MISMATCH); - goto f_err; - } - - /* TODO(TLS1.3): Remove the TLS1_3_VERSION_DRAFT clause before release */ - if (sversion != TLS1_3_VERSION && sversion != TLS1_3_VERSION_DRAFT) { - SSLerr(SSL_F_TLS_PROCESS_HELLO_RETRY_REQUEST, SSL_R_WRONG_SSL_VERSION); - al = SSL_AD_PROTOCOL_VERSION; - goto f_err; - } - - s->hello_retry_request = 1; /* * If we were sending early_data then the enc_write_ctx is now invalid and @@ -1586,58 +1760,39 @@ static MSG_PROCESS_RETURN tls_process_hello_retry_request(SSL *s, PACKET *pkt) EVP_CIPHER_CTX_free(s->enc_write_ctx); s->enc_write_ctx = NULL; - if (!PACKET_get_bytes(pkt, &cipherchars, TLS_CIPHER_LEN)) { - SSLerr(SSL_F_TLS_PROCESS_HELLO_RETRY_REQUEST, SSL_R_LENGTH_MISMATCH); - al = SSL_AD_DECODE_ERROR; - goto f_err; - } - - if (!set_client_ciphersuite(s, cipherchars)) { - al = SSL_AD_ILLEGAL_PARAMETER; - goto f_err; - } - - if (!PACKET_as_length_prefixed_2(pkt, &extpkt) - /* Must have a non-empty extensions block */ - || PACKET_remaining(&extpkt) == 0 - /* Must be no trailing data after extensions */ - || PACKET_remaining(pkt) != 0) { - al = SSL_AD_DECODE_ERROR; - SSLerr(SSL_F_TLS_PROCESS_HELLO_RETRY_REQUEST, SSL_R_BAD_LENGTH); - goto f_err; - } - - if (!tls_collect_extensions(s, &extpkt, SSL_EXT_TLS1_3_HELLO_RETRY_REQUEST, - &extensions, &al, NULL, 1) + if (!tls_collect_extensions(s, extpkt, SSL_EXT_TLS1_3_HELLO_RETRY_REQUEST, + &extensions, NULL, 1) || !tls_parse_all_extensions(s, SSL_EXT_TLS1_3_HELLO_RETRY_REQUEST, - extensions, NULL, 0, &al, 1)) - goto f_err; + extensions, NULL, 0, 1)) { + /* SSLfatal() already called */ + goto err; + } OPENSSL_free(extensions); extensions = NULL; if (s->ext.tls13_cookie_len == 0 #if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH) - && s->s3->tmp.pkey != NULL + && s->s3.tmp.pkey != NULL #endif ) { /* * We didn't receive a cookie or a new key_share so the next * ClientHello will not change */ - al = SSL_AD_ILLEGAL_PARAMETER; - SSLerr(SSL_F_TLS_PROCESS_HELLO_RETRY_REQUEST, - SSL_R_NO_CHANGE_FOLLOWING_HRR); - goto f_err; + SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, + SSL_F_TLS_PROCESS_AS_HELLO_RETRY_REQUEST, + SSL_R_NO_CHANGE_FOLLOWING_HRR); + goto err; } /* * Re-initialise the Transcript Hash. We're going to prepopulate it with * a synthetic message_hash in place of ClientHello1. */ - if (!create_synthetic_message_hash(s)) { - al = SSL_AD_INTERNAL_ERROR; - goto f_err; + if (!create_synthetic_message_hash(s, NULL, 0, NULL, 0)) { + /* SSLfatal() already called */ + goto err; } /* @@ -1648,22 +1803,19 @@ static MSG_PROCESS_RETURN tls_process_hello_retry_request(SSL *s, PACKET *pkt) */ if (!ssl3_finish_mac(s, (unsigned char *)s->init_buf->data, s->init_num + SSL3_HM_HEADER_LENGTH)) { - al = SSL_AD_INTERNAL_ERROR; - SSLerr(SSL_F_TLS_PROCESS_HELLO_RETRY_REQUEST, ERR_R_INTERNAL_ERROR); - goto f_err; + /* SSLfatal() already called */ + goto err; } return MSG_PROCESS_FINISHED_READING; - f_err: - ssl3_send_alert(s, SSL3_AL_FATAL, al); - ossl_statem_set_error(s); + err: OPENSSL_free(extensions); return MSG_PROCESS_ERROR; } MSG_PROCESS_RETURN tls_process_server_certificate(SSL *s, PACKET *pkt) { - int al, i; + int i; MSG_PROCESS_RETURN ret = MSG_PROCESS_ERROR; unsigned long cert_list_len, cert_len; X509 *x = NULL; @@ -1675,7 +1827,8 @@ MSG_PROCESS_RETURN tls_process_server_certificate(SSL *s, PACKET *pkt) const SSL_CERT_LOOKUP *clu; if ((sk = sk_X509_new_null()) == NULL) { - SSLerr(SSL_F_TLS_PROCESS_SERVER_CERTIFICATE, ERR_R_MALLOC_FAILURE); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_PROCESS_SERVER_CERTIFICATE, + ERR_R_MALLOC_FAILURE); goto err; } @@ -1684,31 +1837,31 @@ MSG_PROCESS_RETURN tls_process_server_certificate(SSL *s, PACKET *pkt) || !PACKET_get_net_3(pkt, &cert_list_len) || PACKET_remaining(pkt) != cert_list_len || PACKET_remaining(pkt) == 0) { - al = SSL_AD_DECODE_ERROR; - SSLerr(SSL_F_TLS_PROCESS_SERVER_CERTIFICATE, SSL_R_LENGTH_MISMATCH); - goto f_err; + SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PROCESS_SERVER_CERTIFICATE, + SSL_R_LENGTH_MISMATCH); + goto err; } for (chainidx = 0; PACKET_remaining(pkt); chainidx++) { if (!PACKET_get_net_3(pkt, &cert_len) || !PACKET_get_bytes(pkt, &certbytes, cert_len)) { - al = SSL_AD_DECODE_ERROR; - SSLerr(SSL_F_TLS_PROCESS_SERVER_CERTIFICATE, - SSL_R_CERT_LENGTH_MISMATCH); - goto f_err; + SSLfatal(s, SSL_AD_DECODE_ERROR, + SSL_F_TLS_PROCESS_SERVER_CERTIFICATE, + SSL_R_CERT_LENGTH_MISMATCH); + goto err; } certstart = certbytes; x = d2i_X509(NULL, (const unsigned char **)&certbytes, cert_len); if (x == NULL) { - al = SSL_AD_BAD_CERTIFICATE; - SSLerr(SSL_F_TLS_PROCESS_SERVER_CERTIFICATE, ERR_R_ASN1_LIB); - goto f_err; + SSLfatal(s, SSL_AD_BAD_CERTIFICATE, + SSL_F_TLS_PROCESS_SERVER_CERTIFICATE, ERR_R_ASN1_LIB); + goto err; } if (certbytes != (certstart + cert_len)) { - al = SSL_AD_DECODE_ERROR; - SSLerr(SSL_F_TLS_PROCESS_SERVER_CERTIFICATE, - SSL_R_CERT_LENGTH_MISMATCH); - goto f_err; + SSLfatal(s, SSL_AD_DECODE_ERROR, + SSL_F_TLS_PROCESS_SERVER_CERTIFICATE, + SSL_R_CERT_LENGTH_MISMATCH); + goto err; } if (SSL_IS_TLS13(s)) { @@ -1716,24 +1869,28 @@ MSG_PROCESS_RETURN tls_process_server_certificate(SSL *s, PACKET *pkt) PACKET extensions; if (!PACKET_get_length_prefixed_2(pkt, &extensions)) { - al = SSL_AD_DECODE_ERROR; - SSLerr(SSL_F_TLS_PROCESS_SERVER_CERTIFICATE, SSL_R_BAD_LENGTH); - goto f_err; + SSLfatal(s, SSL_AD_DECODE_ERROR, + SSL_F_TLS_PROCESS_SERVER_CERTIFICATE, + SSL_R_BAD_LENGTH); + goto err; } if (!tls_collect_extensions(s, &extensions, SSL_EXT_TLS1_3_CERTIFICATE, &rawexts, - &al, NULL, chainidx == 0) + NULL, chainidx == 0) || !tls_parse_all_extensions(s, SSL_EXT_TLS1_3_CERTIFICATE, - rawexts, x, chainidx, &al, + rawexts, x, chainidx, PACKET_remaining(pkt) == 0)) { OPENSSL_free(rawexts); - goto f_err; + /* SSLfatal already called */ + goto err; } OPENSSL_free(rawexts); } if (!sk_X509_push(sk, x)) { - SSLerr(SSL_F_TLS_PROCESS_SERVER_CERTIFICATE, ERR_R_MALLOC_FAILURE); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, + SSL_F_TLS_PROCESS_SERVER_CERTIFICATE, + ERR_R_MALLOC_FAILURE); goto err; } x = NULL; @@ -1755,16 +1912,16 @@ MSG_PROCESS_RETURN tls_process_server_certificate(SSL *s, PACKET *pkt) * set. The *documented* interface remains the same. */ if (s->verify_mode != SSL_VERIFY_NONE && i <= 0) { - al = ssl_verify_alarm_type(s->verify_result); - SSLerr(SSL_F_TLS_PROCESS_SERVER_CERTIFICATE, - SSL_R_CERTIFICATE_VERIFY_FAILED); - goto f_err; + SSLfatal(s, ssl_x509err2alert(s->verify_result), + SSL_F_TLS_PROCESS_SERVER_CERTIFICATE, + SSL_R_CERTIFICATE_VERIFY_FAILED); + goto err; } ERR_clear_error(); /* but we keep s->verify_result */ if (i > 1) { - SSLerr(SSL_F_TLS_PROCESS_SERVER_CERTIFICATE, i); - al = SSL_AD_HANDSHAKE_FAILURE; - goto f_err; + SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, + SSL_F_TLS_PROCESS_SERVER_CERTIFICATE, i); + goto err; } s->session->peer_chain = sk; @@ -1779,18 +1936,17 @@ MSG_PROCESS_RETURN tls_process_server_certificate(SSL *s, PACKET *pkt) if (pkey == NULL || EVP_PKEY_missing_parameters(pkey)) { x = NULL; - al = SSL_AD_INTERNAL_ERROR; - SSLerr(SSL_F_TLS_PROCESS_SERVER_CERTIFICATE, - SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS); - goto f_err; + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_PROCESS_SERVER_CERTIFICATE, + SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS); + goto err; } if ((clu = ssl_cert_lookup_by_pkey(pkey, &certidx)) == NULL) { x = NULL; - al = SSL3_AL_FATAL; - SSLerr(SSL_F_TLS_PROCESS_SERVER_CERTIFICATE, - SSL_R_UNKNOWN_CERTIFICATE_TYPE); - goto f_err; + SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, + SSL_F_TLS_PROCESS_SERVER_CERTIFICATE, + SSL_R_UNKNOWN_CERTIFICATE_TYPE); + goto err; } /* * Check certificate type is consistent with ciphersuite. For TLS 1.3 @@ -1798,12 +1954,12 @@ MSG_PROCESS_RETURN tls_process_server_certificate(SSL *s, PACKET *pkt) * type. */ if (!SSL_IS_TLS13(s)) { - if ((clu->amask & s->s3->tmp.new_cipher->algorithm_auth) == 0) { + if ((clu->amask & s->s3.tmp.new_cipher->algorithm_auth) == 0) { x = NULL; - al = SSL_AD_ILLEGAL_PARAMETER; - SSLerr(SSL_F_TLS_PROCESS_SERVER_CERTIFICATE, - SSL_R_WRONG_CERTIFICATE_TYPE); - goto f_err; + SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, + SSL_F_TLS_PROCESS_SERVER_CERTIFICATE, + SSL_R_WRONG_CERTIFICATE_TYPE); + goto err; } } s->session->peer_type = certidx; @@ -1819,25 +1975,19 @@ MSG_PROCESS_RETURN tls_process_server_certificate(SSL *s, PACKET *pkt) && !ssl_handshake_hash(s, s->cert_verify_hash, sizeof(s->cert_verify_hash), &s->cert_verify_hash_len)) { - al = SSL_AD_INTERNAL_ERROR; - SSLerr(SSL_F_TLS_PROCESS_SERVER_CERTIFICATE, ERR_R_INTERNAL_ERROR); - goto f_err; + /* SSLfatal() already called */; + goto err; } ret = MSG_PROCESS_CONTINUE_READING; - goto done; - f_err: - ssl3_send_alert(s, SSL3_AL_FATAL, al); err: - ossl_statem_set_error(s); - done: X509_free(x); sk_X509_pop_free(sk, X509_free); return ret; } -static int tls_process_ske_psk_preamble(SSL *s, PACKET *pkt, int *al) +static int tls_process_ske_psk_preamble(SSL *s, PACKET *pkt) { #ifndef OPENSSL_NO_PSK PACKET psk_identity_hint; @@ -1845,8 +1995,8 @@ static int tls_process_ske_psk_preamble(SSL *s, PACKET *pkt, int *al) /* PSK ciphersuites are preceded by an identity hint */ if (!PACKET_get_length_prefixed_2(pkt, &psk_identity_hint)) { - *al = SSL_AD_DECODE_ERROR; - SSLerr(SSL_F_TLS_PROCESS_SKE_PSK_PREAMBLE, SSL_R_LENGTH_MISMATCH); + SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PROCESS_SKE_PSK_PREAMBLE, + SSL_R_LENGTH_MISMATCH); return 0; } @@ -1857,8 +2007,9 @@ static int tls_process_ske_psk_preamble(SSL *s, PACKET *pkt, int *al) * identity. */ if (PACKET_remaining(&psk_identity_hint) > PSK_MAX_IDENTITY_LEN) { - *al = SSL_AD_HANDSHAKE_FAILURE; - SSLerr(SSL_F_TLS_PROCESS_SKE_PSK_PREAMBLE, SSL_R_DATA_LENGTH_TOO_LONG); + SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, + SSL_F_TLS_PROCESS_SKE_PSK_PREAMBLE, + SSL_R_DATA_LENGTH_TOO_LONG); return 0; } @@ -1867,19 +2018,20 @@ static int tls_process_ske_psk_preamble(SSL *s, PACKET *pkt, int *al) s->session->psk_identity_hint = NULL; } else if (!PACKET_strndup(&psk_identity_hint, &s->session->psk_identity_hint)) { - *al = SSL_AD_INTERNAL_ERROR; + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_PROCESS_SKE_PSK_PREAMBLE, + ERR_R_INTERNAL_ERROR); return 0; } return 1; #else - SSLerr(SSL_F_TLS_PROCESS_SKE_PSK_PREAMBLE, ERR_R_INTERNAL_ERROR); - *al = SSL_AD_INTERNAL_ERROR; + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_PROCESS_SKE_PSK_PREAMBLE, + ERR_R_INTERNAL_ERROR); return 0; #endif } -static int tls_process_ske_srp(SSL *s, PACKET *pkt, EVP_PKEY **pkey, int *al) +static int tls_process_ske_srp(SSL *s, PACKET *pkt, EVP_PKEY **pkey) { #ifndef OPENSSL_NO_SRP PACKET prime, generator, salt, server_pub; @@ -1888,8 +2040,8 @@ static int tls_process_ske_srp(SSL *s, PACKET *pkt, EVP_PKEY **pkey, int *al) || !PACKET_get_length_prefixed_2(pkt, &generator) || !PACKET_get_length_prefixed_1(pkt, &salt) || !PACKET_get_length_prefixed_2(pkt, &server_pub)) { - *al = SSL_AD_DECODE_ERROR; - SSLerr(SSL_F_TLS_PROCESS_SKE_SRP, SSL_R_LENGTH_MISMATCH); + SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PROCESS_SKE_SRP, + SSL_R_LENGTH_MISMATCH); return 0; } @@ -1906,29 +2058,29 @@ static int tls_process_ske_srp(SSL *s, PACKET *pkt, EVP_PKEY **pkey, int *al) || (s->srp_ctx.B = BN_bin2bn(PACKET_data(&server_pub), (int)PACKET_remaining(&server_pub), NULL)) == NULL) { - *al = SSL_AD_INTERNAL_ERROR; - SSLerr(SSL_F_TLS_PROCESS_SKE_SRP, ERR_R_BN_LIB); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_PROCESS_SKE_SRP, + ERR_R_BN_LIB); return 0; } - if (!srp_verify_server_param(s, al)) { - SSLerr(SSL_F_TLS_PROCESS_SKE_SRP, SSL_R_BAD_SRP_PARAMETERS); + if (!srp_verify_server_param(s)) { + /* SSLfatal() already called */ return 0; } /* We must check if there is a certificate */ - if (s->s3->tmp.new_cipher->algorithm_auth & (SSL_aRSA | SSL_aDSS)) + if (s->s3.tmp.new_cipher->algorithm_auth & (SSL_aRSA | SSL_aDSS)) *pkey = X509_get0_pubkey(s->session->peer); return 1; #else - SSLerr(SSL_F_TLS_PROCESS_SKE_SRP, ERR_R_INTERNAL_ERROR); - *al = SSL_AD_INTERNAL_ERROR; + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_PROCESS_SKE_SRP, + ERR_R_INTERNAL_ERROR); return 0; #endif } -static int tls_process_ske_dhe(SSL *s, PACKET *pkt, EVP_PKEY **pkey, int *al) +static int tls_process_ske_dhe(SSL *s, PACKET *pkt, EVP_PKEY **pkey) { #ifndef OPENSSL_NO_DH PACKET prime, generator, pub_key; @@ -1942,8 +2094,8 @@ static int tls_process_ske_dhe(SSL *s, PACKET *pkt, EVP_PKEY **pkey, int *al) if (!PACKET_get_length_prefixed_2(pkt, &prime) || !PACKET_get_length_prefixed_2(pkt, &generator) || !PACKET_get_length_prefixed_2(pkt, &pub_key)) { - *al = SSL_AD_DECODE_ERROR; - SSLerr(SSL_F_TLS_PROCESS_SKE_DHE, SSL_R_LENGTH_MISMATCH); + SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PROCESS_SKE_DHE, + SSL_R_LENGTH_MISMATCH); return 0; } @@ -1951,8 +2103,8 @@ static int tls_process_ske_dhe(SSL *s, PACKET *pkt, EVP_PKEY **pkey, int *al) dh = DH_new(); if (peer_tmp == NULL || dh == NULL) { - *al = SSL_AD_INTERNAL_ERROR; - SSLerr(SSL_F_TLS_PROCESS_SKE_DHE, ERR_R_MALLOC_FAILURE); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_PROCESS_SKE_DHE, + ERR_R_MALLOC_FAILURE); goto err; } @@ -1963,57 +2115,59 @@ static int tls_process_ske_dhe(SSL *s, PACKET *pkt, EVP_PKEY **pkey, int *al) bnpub_key = BN_bin2bn(PACKET_data(&pub_key), (int)PACKET_remaining(&pub_key), NULL); if (p == NULL || g == NULL || bnpub_key == NULL) { - *al = SSL_AD_INTERNAL_ERROR; - SSLerr(SSL_F_TLS_PROCESS_SKE_DHE, ERR_R_BN_LIB); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_PROCESS_SKE_DHE, + ERR_R_BN_LIB); goto err; } /* test non-zero pubkey */ if (BN_is_zero(bnpub_key)) { - *al = SSL_AD_ILLEGAL_PARAMETER; - SSLerr(SSL_F_TLS_PROCESS_SKE_DHE, SSL_R_BAD_DH_VALUE); + SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_TLS_PROCESS_SKE_DHE, + SSL_R_BAD_DH_VALUE); goto err; } if (!DH_set0_pqg(dh, p, NULL, g)) { - *al = SSL_AD_INTERNAL_ERROR; - SSLerr(SSL_F_TLS_PROCESS_SKE_DHE, ERR_R_BN_LIB); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_PROCESS_SKE_DHE, + ERR_R_BN_LIB); goto err; } p = g = NULL; if (DH_check_params(dh, &check_bits) == 0 || check_bits != 0) { - *al = SSL_AD_ILLEGAL_PARAMETER; - SSLerr(SSL_F_TLS_PROCESS_SKE_DHE, SSL_R_BAD_DH_VALUE); + SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_TLS_PROCESS_SKE_DHE, + SSL_R_BAD_DH_VALUE); goto err; } if (!DH_set0_key(dh, bnpub_key, NULL)) { - *al = SSL_AD_INTERNAL_ERROR; - SSLerr(SSL_F_TLS_PROCESS_SKE_DHE, ERR_R_BN_LIB); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_PROCESS_SKE_DHE, + ERR_R_BN_LIB); goto err; } bnpub_key = NULL; - if (!ssl_security(s, SSL_SECOP_TMP_DH, DH_security_bits(dh), 0, dh)) { - *al = SSL_AD_HANDSHAKE_FAILURE; - SSLerr(SSL_F_TLS_PROCESS_SKE_DHE, SSL_R_DH_KEY_TOO_SMALL); + if (EVP_PKEY_assign_DH(peer_tmp, dh) == 0) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_PROCESS_SKE_DHE, + ERR_R_EVP_LIB); goto err; } + dh = NULL; - if (EVP_PKEY_assign_DH(peer_tmp, dh) == 0) { - *al = SSL_AD_INTERNAL_ERROR; - SSLerr(SSL_F_TLS_PROCESS_SKE_DHE, ERR_R_EVP_LIB); + if (!ssl_security(s, SSL_SECOP_TMP_DH, EVP_PKEY_security_bits(peer_tmp), + 0, EVP_PKEY_get0_DH(peer_tmp))) { + SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_TLS_PROCESS_SKE_DHE, + SSL_R_DH_KEY_TOO_SMALL); goto err; } - s->s3->peer_tmp = peer_tmp; + s->s3.peer_tmp = peer_tmp; /* * FIXME: This makes assumptions about which ciphersuites come with * public keys. We should have a less ad-hoc way of doing this */ - if (s->s3->tmp.new_cipher->algorithm_auth & (SSL_aRSA | SSL_aDSS)) + if (s->s3.tmp.new_cipher->algorithm_auth & (SSL_aRSA | SSL_aDSS)) *pkey = X509_get0_pubkey(s->session->peer); /* else anonymous DH, so no certificate or pkey. */ @@ -2028,13 +2182,13 @@ static int tls_process_ske_dhe(SSL *s, PACKET *pkt, EVP_PKEY **pkey, int *al) return 0; #else - SSLerr(SSL_F_TLS_PROCESS_SKE_DHE, ERR_R_INTERNAL_ERROR); - *al = SSL_AD_INTERNAL_ERROR; + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_PROCESS_SKE_DHE, + ERR_R_INTERNAL_ERROR); return 0; #endif } -static int tls_process_ske_ecdhe(SSL *s, PACKET *pkt, EVP_PKEY **pkey, int *al) +static int tls_process_ske_ecdhe(SSL *s, PACKET *pkt, EVP_PKEY **pkey) { #ifndef OPENSSL_NO_EC PACKET encoded_pt; @@ -2046,38 +2200,38 @@ static int tls_process_ske_ecdhe(SSL *s, PACKET *pkt, EVP_PKEY **pkey, int *al) * ECParameters in this case is just three bytes. */ if (!PACKET_get_1(pkt, &curve_type) || !PACKET_get_net_2(pkt, &curve_id)) { - *al = SSL_AD_DECODE_ERROR; - SSLerr(SSL_F_TLS_PROCESS_SKE_ECDHE, SSL_R_LENGTH_TOO_SHORT); + SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PROCESS_SKE_ECDHE, + SSL_R_LENGTH_TOO_SHORT); return 0; } /* * Check curve is named curve type and one of our preferences, if not * server has sent an invalid curve. */ - if (curve_type != NAMED_CURVE_TYPE || !tls1_check_group_id(s, curve_id)) { - *al = SSL_AD_ILLEGAL_PARAMETER; - SSLerr(SSL_F_TLS_PROCESS_SKE_ECDHE, SSL_R_WRONG_CURVE); + if (curve_type != NAMED_CURVE_TYPE + || !tls1_check_group_id(s, curve_id, 1)) { + SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_TLS_PROCESS_SKE_ECDHE, + SSL_R_WRONG_CURVE); return 0; } - if ((s->s3->peer_tmp = ssl_generate_param_group(curve_id)) == NULL) { - *al = SSL_AD_INTERNAL_ERROR; - SSLerr(SSL_F_TLS_PROCESS_SKE_ECDHE, - SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS); + if ((s->s3.peer_tmp = ssl_generate_param_group(s, curve_id)) == NULL) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_PROCESS_SKE_ECDHE, + SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS); return 0; } if (!PACKET_get_length_prefixed_1(pkt, &encoded_pt)) { - *al = SSL_AD_DECODE_ERROR; - SSLerr(SSL_F_TLS_PROCESS_SKE_ECDHE, SSL_R_LENGTH_MISMATCH); + SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PROCESS_SKE_ECDHE, + SSL_R_LENGTH_MISMATCH); return 0; } - if (!EVP_PKEY_set1_tls_encodedpoint(s->s3->peer_tmp, + if (!EVP_PKEY_set1_tls_encodedpoint(s->s3.peer_tmp, PACKET_data(&encoded_pt), PACKET_remaining(&encoded_pt))) { - *al = SSL_AD_ILLEGAL_PARAMETER; - SSLerr(SSL_F_TLS_PROCESS_SKE_ECDHE, SSL_R_BAD_ECPOINT); + SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_TLS_PROCESS_SKE_ECDHE, + SSL_R_BAD_ECPOINT); return 0; } @@ -2086,64 +2240,70 @@ static int tls_process_ske_ecdhe(SSL *s, PACKET *pkt, EVP_PKEY **pkey, int *al) * ECParameters in the server key exchange message. We do support RSA * and ECDSA. */ - if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aECDSA) + if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) *pkey = X509_get0_pubkey(s->session->peer); - else if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aRSA) + else if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aRSA) *pkey = X509_get0_pubkey(s->session->peer); /* else anonymous ECDH, so no certificate or pkey. */ return 1; #else - SSLerr(SSL_F_TLS_PROCESS_SKE_ECDHE, ERR_R_INTERNAL_ERROR); - *al = SSL_AD_INTERNAL_ERROR; + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_PROCESS_SKE_ECDHE, + ERR_R_INTERNAL_ERROR); return 0; #endif } MSG_PROCESS_RETURN tls_process_key_exchange(SSL *s, PACKET *pkt) { - int al = -1; long alg_k; EVP_PKEY *pkey = NULL; EVP_MD_CTX *md_ctx = NULL; EVP_PKEY_CTX *pctx = NULL; PACKET save_param_start, signature; - alg_k = s->s3->tmp.new_cipher->algorithm_mkey; + alg_k = s->s3.tmp.new_cipher->algorithm_mkey; save_param_start = *pkt; #if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_DH) - EVP_PKEY_free(s->s3->peer_tmp); - s->s3->peer_tmp = NULL; + EVP_PKEY_free(s->s3.peer_tmp); + s->s3.peer_tmp = NULL; #endif if (alg_k & SSL_PSK) { - if (!tls_process_ske_psk_preamble(s, pkt, &al)) + if (!tls_process_ske_psk_preamble(s, pkt)) { + /* SSLfatal() already called */ goto err; + } } /* Nothing else to do for plain PSK or RSAPSK */ if (alg_k & (SSL_kPSK | SSL_kRSAPSK)) { } else if (alg_k & SSL_kSRP) { - if (!tls_process_ske_srp(s, pkt, &pkey, &al)) + if (!tls_process_ske_srp(s, pkt, &pkey)) { + /* SSLfatal() already called */ goto err; + } } else if (alg_k & (SSL_kDHE | SSL_kDHEPSK)) { - if (!tls_process_ske_dhe(s, pkt, &pkey, &al)) + if (!tls_process_ske_dhe(s, pkt, &pkey)) { + /* SSLfatal() already called */ goto err; + } } else if (alg_k & (SSL_kECDHE | SSL_kECDHEPSK)) { - if (!tls_process_ske_ecdhe(s, pkt, &pkey, &al)) + if (!tls_process_ske_ecdhe(s, pkt, &pkey)) { + /* SSLfatal() already called */ goto err; + } } else if (alg_k) { - al = SSL_AD_UNEXPECTED_MESSAGE; - SSLerr(SSL_F_TLS_PROCESS_KEY_EXCHANGE, SSL_R_UNEXPECTED_MESSAGE); + SSLfatal(s, SSL_AD_UNEXPECTED_MESSAGE, SSL_F_TLS_PROCESS_KEY_EXCHANGE, + SSL_R_UNEXPECTED_MESSAGE); goto err; } /* if it was signed, check the signature */ if (pkey != NULL) { PACKET params; - int maxsig; const EVP_MD *md = NULL; unsigned char *tbs; size_t tbslen; @@ -2156,8 +2316,8 @@ MSG_PROCESS_RETURN tls_process_key_exchange(SSL *s, PACKET *pkt) if (!PACKET_get_sub_packet(&save_param_start, ¶ms, PACKET_remaining(&save_param_start) - PACKET_remaining(pkt))) { - al = SSL_AD_DECODE_ERROR; - SSLerr(SSL_F_TLS_PROCESS_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR); + SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PROCESS_KEY_EXCHANGE, + ERR_R_INTERNAL_ERROR); goto err; } @@ -2165,81 +2325,63 @@ MSG_PROCESS_RETURN tls_process_key_exchange(SSL *s, PACKET *pkt) unsigned int sigalg; if (!PACKET_get_net_2(pkt, &sigalg)) { - al = SSL_AD_DECODE_ERROR; - SSLerr(SSL_F_TLS_PROCESS_KEY_EXCHANGE, SSL_R_LENGTH_TOO_SHORT); + SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PROCESS_KEY_EXCHANGE, + SSL_R_LENGTH_TOO_SHORT); goto err; } - rv = tls12_check_peer_sigalg(s, sigalg, pkey); - if (rv == -1) { - al = SSL_AD_INTERNAL_ERROR; - goto err; - } else if (rv == 0) { - al = SSL_AD_DECODE_ERROR; + if (tls12_check_peer_sigalg(s, sigalg, pkey) <=0) { + /* SSLfatal() already called */ goto err; } -#ifdef SSL_DEBUG - fprintf(stderr, "USING TLSv1.2 HASH %s\n", EVP_MD_name(md)); -#endif } else if (!tls1_set_peer_legacy_sigalg(s, pkey)) { - al = SSL_AD_INTERNAL_ERROR; + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_PROCESS_KEY_EXCHANGE, + ERR_R_INTERNAL_ERROR); goto err; } - if (!tls1_lookup_md(s->s3->tmp.peer_sigalg, &md)) { - al = SSL_AD_INTERNAL_ERROR; + if (!tls1_lookup_md(s->ctx, s->s3.tmp.peer_sigalg, &md)) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_PROCESS_KEY_EXCHANGE, + ERR_R_INTERNAL_ERROR); goto err; } + if (SSL_USE_SIGALGS(s)) + OSSL_TRACE1(TLS, "USING TLSv1.2 HASH %s\n", + md == NULL ? "n/a" : EVP_MD_name(md)); if (!PACKET_get_length_prefixed_2(pkt, &signature) || PACKET_remaining(pkt) != 0) { - al = SSL_AD_DECODE_ERROR; - SSLerr(SSL_F_TLS_PROCESS_KEY_EXCHANGE, SSL_R_LENGTH_MISMATCH); - goto err; - } - maxsig = EVP_PKEY_size(pkey); - if (maxsig < 0) { - al = SSL_AD_INTERNAL_ERROR; - SSLerr(SSL_F_TLS_PROCESS_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR); - goto err; - } - - /* - * Check signature length - */ - if (PACKET_remaining(&signature) > (size_t)maxsig) { - /* wrong packet length */ - al = SSL_AD_DECODE_ERROR; - SSLerr(SSL_F_TLS_PROCESS_KEY_EXCHANGE, - SSL_R_WRONG_SIGNATURE_LENGTH); + SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PROCESS_KEY_EXCHANGE, + SSL_R_LENGTH_MISMATCH); goto err; } md_ctx = EVP_MD_CTX_new(); if (md_ctx == NULL) { - al = SSL_AD_INTERNAL_ERROR; - SSLerr(SSL_F_TLS_PROCESS_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_PROCESS_KEY_EXCHANGE, + ERR_R_MALLOC_FAILURE); goto err; } - if (EVP_DigestVerifyInit(md_ctx, &pctx, md, NULL, pkey) <= 0) { - al = SSL_AD_INTERNAL_ERROR; - SSLerr(SSL_F_TLS_PROCESS_KEY_EXCHANGE, ERR_R_EVP_LIB); + if (EVP_DigestVerifyInit_ex(md_ctx, &pctx, + md == NULL ? NULL : EVP_MD_name(md), + s->ctx->propq, pkey, s->ctx->libctx) <= 0) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_PROCESS_KEY_EXCHANGE, + ERR_R_EVP_LIB); goto err; } if (SSL_USE_PSS(s)) { if (EVP_PKEY_CTX_set_rsa_padding(pctx, RSA_PKCS1_PSS_PADDING) <= 0 || EVP_PKEY_CTX_set_rsa_pss_saltlen(pctx, RSA_PSS_SALTLEN_DIGEST) <= 0) { - al = SSL_AD_INTERNAL_ERROR; - SSLerr(SSL_F_TLS_PROCESS_KEY_EXCHANGE, ERR_R_EVP_LIB); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, + SSL_F_TLS_PROCESS_KEY_EXCHANGE, ERR_R_EVP_LIB); goto err; } } tbslen = construct_key_exchange_tbs(s, &tbs, PACKET_data(¶ms), PACKET_remaining(¶ms)); if (tbslen == 0) { - al = SSL_AD_INTERNAL_ERROR; - SSLerr(SSL_F_TLS_PROCESS_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE); + /* SSLfatal() already called */ goto err; } @@ -2247,168 +2389,194 @@ MSG_PROCESS_RETURN tls_process_key_exchange(SSL *s, PACKET *pkt) PACKET_remaining(&signature), tbs, tbslen); OPENSSL_free(tbs); if (rv <= 0) { - al = SSL_AD_DECRYPT_ERROR; - SSLerr(SSL_F_TLS_PROCESS_KEY_EXCHANGE, SSL_R_BAD_SIGNATURE); + SSLfatal(s, SSL_AD_DECRYPT_ERROR, SSL_F_TLS_PROCESS_KEY_EXCHANGE, + SSL_R_BAD_SIGNATURE); goto err; } EVP_MD_CTX_free(md_ctx); md_ctx = NULL; } else { /* aNULL, aSRP or PSK do not need public keys */ - if (!(s->s3->tmp.new_cipher->algorithm_auth & (SSL_aNULL | SSL_aSRP)) + if (!(s->s3.tmp.new_cipher->algorithm_auth & (SSL_aNULL | SSL_aSRP)) && !(alg_k & SSL_PSK)) { /* Might be wrong key type, check it */ if (ssl3_check_cert_and_algorithm(s)) { - /* Otherwise this shouldn't happen */ - al = SSL_AD_INTERNAL_ERROR; - SSLerr(SSL_F_TLS_PROCESS_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR); - } else { - al = SSL_AD_DECODE_ERROR; + SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PROCESS_KEY_EXCHANGE, + SSL_R_BAD_DATA); } + /* else this shouldn't happen, SSLfatal() already called */ goto err; } /* still data left over */ if (PACKET_remaining(pkt) != 0) { - al = SSL_AD_DECODE_ERROR; - SSLerr(SSL_F_TLS_PROCESS_KEY_EXCHANGE, SSL_R_EXTRA_DATA_IN_MESSAGE); + SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PROCESS_KEY_EXCHANGE, + SSL_R_EXTRA_DATA_IN_MESSAGE); goto err; } } return MSG_PROCESS_CONTINUE_READING; err: - if (al != -1) - ssl3_send_alert(s, SSL3_AL_FATAL, al); - ossl_statem_set_error(s); EVP_MD_CTX_free(md_ctx); return MSG_PROCESS_ERROR; } MSG_PROCESS_RETURN tls_process_certificate_request(SSL *s, PACKET *pkt) { - MSG_PROCESS_RETURN ret = MSG_PROCESS_ERROR; - int al = SSL_AD_DECODE_ERROR; size_t i; /* Clear certificate validity flags */ for (i = 0; i < SSL_PKEY_NUM; i++) - s->s3->tmp.valid_flags[i] = 0; + s->s3.tmp.valid_flags[i] = 0; if (SSL_IS_TLS13(s)) { PACKET reqctx, extensions; RAW_EXTENSION *rawexts = NULL; + if ((s->shutdown & SSL_SENT_SHUTDOWN) != 0) { + /* + * We already sent close_notify. This can only happen in TLSv1.3 + * post-handshake messages. We can't reasonably respond to this, so + * we just ignore it + */ + return MSG_PROCESS_FINISHED_READING; + } + /* Free and zero certificate types: it is not present in TLS 1.3 */ - OPENSSL_free(s->s3->tmp.ctype); - s->s3->tmp.ctype = NULL; - s->s3->tmp.ctype_len = 0; - - /* TODO(TLS1.3) need to process request context, for now ignore */ - if (!PACKET_get_length_prefixed_1(pkt, &reqctx)) { - SSLerr(SSL_F_TLS_PROCESS_CERTIFICATE_REQUEST, - SSL_R_LENGTH_MISMATCH); - goto err; + OPENSSL_free(s->s3.tmp.ctype); + s->s3.tmp.ctype = NULL; + s->s3.tmp.ctype_len = 0; + OPENSSL_free(s->pha_context); + s->pha_context = NULL; + + if (!PACKET_get_length_prefixed_1(pkt, &reqctx) || + !PACKET_memdup(&reqctx, &s->pha_context, &s->pha_context_len)) { + SSLfatal(s, SSL_AD_DECODE_ERROR, + SSL_F_TLS_PROCESS_CERTIFICATE_REQUEST, + SSL_R_LENGTH_MISMATCH); + return MSG_PROCESS_ERROR; } if (!PACKET_get_length_prefixed_2(pkt, &extensions)) { - SSLerr(SSL_F_TLS_PROCESS_CERTIFICATE_REQUEST, SSL_R_BAD_LENGTH); - goto err; + SSLfatal(s, SSL_AD_DECODE_ERROR, + SSL_F_TLS_PROCESS_CERTIFICATE_REQUEST, + SSL_R_BAD_LENGTH); + return MSG_PROCESS_ERROR; } if (!tls_collect_extensions(s, &extensions, SSL_EXT_TLS1_3_CERTIFICATE_REQUEST, - &rawexts, &al, NULL, 1) + &rawexts, NULL, 1) || !tls_parse_all_extensions(s, SSL_EXT_TLS1_3_CERTIFICATE_REQUEST, - rawexts, NULL, 0, &al, 1)) { + rawexts, NULL, 0, 1)) { + /* SSLfatal() already called */ OPENSSL_free(rawexts); - goto err; + return MSG_PROCESS_ERROR; } OPENSSL_free(rawexts); if (!tls1_process_sigalgs(s)) { - al = SSL_AD_INTERNAL_ERROR; - SSLerr(SSL_F_TLS_PROCESS_CERTIFICATE_REQUEST, ERR_R_MALLOC_FAILURE); - goto err; + SSLfatal(s, SSL_AD_INTERNAL_ERROR, + SSL_F_TLS_PROCESS_CERTIFICATE_REQUEST, + SSL_R_BAD_LENGTH); + return MSG_PROCESS_ERROR; } } else { PACKET ctypes; /* get the certificate types */ if (!PACKET_get_length_prefixed_1(pkt, &ctypes)) { - SSLerr(SSL_F_TLS_PROCESS_CERTIFICATE_REQUEST, - SSL_R_LENGTH_MISMATCH); - goto err; + SSLfatal(s, SSL_AD_DECODE_ERROR, + SSL_F_TLS_PROCESS_CERTIFICATE_REQUEST, + SSL_R_LENGTH_MISMATCH); + return MSG_PROCESS_ERROR; } - if (!PACKET_memdup(&ctypes, &s->s3->tmp.ctype, &s->s3->tmp.ctype_len)) { - al = SSL_AD_INTERNAL_ERROR; - SSLerr(SSL_F_TLS_PROCESS_CERTIFICATE_REQUEST, ERR_R_INTERNAL_ERROR); - goto err; + if (!PACKET_memdup(&ctypes, &s->s3.tmp.ctype, &s->s3.tmp.ctype_len)) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, + SSL_F_TLS_PROCESS_CERTIFICATE_REQUEST, + ERR_R_INTERNAL_ERROR); + return MSG_PROCESS_ERROR; } if (SSL_USE_SIGALGS(s)) { PACKET sigalgs; if (!PACKET_get_length_prefixed_2(pkt, &sigalgs)) { - SSLerr(SSL_F_TLS_PROCESS_CERTIFICATE_REQUEST, - SSL_R_LENGTH_MISMATCH); - goto err; + SSLfatal(s, SSL_AD_DECODE_ERROR, + SSL_F_TLS_PROCESS_CERTIFICATE_REQUEST, + SSL_R_LENGTH_MISMATCH); + return MSG_PROCESS_ERROR; } - if (!tls1_save_sigalgs(s, &sigalgs)) { - SSLerr(SSL_F_TLS_PROCESS_CERTIFICATE_REQUEST, - SSL_R_SIGNATURE_ALGORITHMS_ERROR); - goto err; + /* + * Despite this being for certificates, preserve compatibility + * with pre-TLS 1.3 and use the regular sigalgs field. + */ + if (!tls1_save_sigalgs(s, &sigalgs, 0)) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, + SSL_F_TLS_PROCESS_CERTIFICATE_REQUEST, + SSL_R_SIGNATURE_ALGORITHMS_ERROR); + return MSG_PROCESS_ERROR; } if (!tls1_process_sigalgs(s)) { - al = SSL_AD_INTERNAL_ERROR; - SSLerr(SSL_F_TLS_PROCESS_CERTIFICATE_REQUEST, - ERR_R_MALLOC_FAILURE); - goto err; + SSLfatal(s, SSL_AD_INTERNAL_ERROR, + SSL_F_TLS_PROCESS_CERTIFICATE_REQUEST, + ERR_R_MALLOC_FAILURE); + return MSG_PROCESS_ERROR; } } /* get the CA RDNs */ - if (!parse_ca_names(s, pkt, &al)) - goto err; + if (!parse_ca_names(s, pkt)) { + /* SSLfatal() already called */ + return MSG_PROCESS_ERROR; + } } if (PACKET_remaining(pkt) != 0) { - SSLerr(SSL_F_TLS_PROCESS_CERTIFICATE_REQUEST, SSL_R_LENGTH_MISMATCH); - goto err; + SSLfatal(s, SSL_AD_DECODE_ERROR, + SSL_F_TLS_PROCESS_CERTIFICATE_REQUEST, + SSL_R_LENGTH_MISMATCH); + return MSG_PROCESS_ERROR; } /* we should setup a certificate to return.... */ - s->s3->tmp.cert_req = 1; + s->s3.tmp.cert_req = 1; - ret = MSG_PROCESS_CONTINUE_PROCESSING; - goto done; - err: - ssl3_send_alert(s, SSL3_AL_FATAL, al); - ossl_statem_set_error(s); - done: - return ret; + /* + * In TLSv1.3 we don't prepare the client certificate yet. We wait until + * after the CertificateVerify message has been received. This is because + * in TLSv1.3 the CertificateRequest arrives before the Certificate message + * but in TLSv1.2 it is the other way around. We want to make sure that + * SSL_get_peer_certificate() returns something sensible in + * client_cert_cb. + */ + if (SSL_IS_TLS13(s) && s->post_handshake_auth != SSL_PHA_REQUESTED) + return MSG_PROCESS_CONTINUE_READING; + + return MSG_PROCESS_CONTINUE_PROCESSING; } MSG_PROCESS_RETURN tls_process_new_session_ticket(SSL *s, PACKET *pkt) { - int al = SSL_AD_DECODE_ERROR; unsigned int ticklen; unsigned long ticket_lifetime_hint, age_add = 0; unsigned int sess_len; RAW_EXTENSION *exts = NULL; PACKET nonce; + EVP_MD *sha256 = NULL; + + PACKET_null_init(&nonce); if (!PACKET_get_net_4(pkt, &ticket_lifetime_hint) || (SSL_IS_TLS13(s) && (!PACKET_get_net_4(pkt, &age_add) - || !PACKET_get_length_prefixed_1(pkt, &nonce) - || !PACKET_memdup(&nonce, &s->session->ext.tick_nonce, - &s->session->ext.tick_nonce_len))) + || !PACKET_get_length_prefixed_1(pkt, &nonce))) || !PACKET_get_net_2(pkt, &ticklen) - || (!SSL_IS_TLS13(s) && PACKET_remaining(pkt) != ticklen) - || (SSL_IS_TLS13(s) - && (ticklen == 0 || PACKET_remaining(pkt) < ticklen))) { - SSLerr(SSL_F_TLS_PROCESS_NEW_SESSION_TICKET, SSL_R_LENGTH_MISMATCH); - goto f_err; + || (SSL_IS_TLS13(s) ? (ticklen == 0 || PACKET_remaining(pkt) < ticklen) + : PACKET_remaining(pkt) != ticklen)) { + SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PROCESS_NEW_SESSION_TICKET, + SSL_R_LENGTH_MISMATCH); + goto err; } /* @@ -2428,21 +2596,25 @@ MSG_PROCESS_RETURN tls_process_new_session_ticket(SSL *s, PACKET *pkt) * cache. */ if (SSL_IS_TLS13(s) || s->session->session_id_length > 0) { - int i = s->session_ctx->session_cache_mode; SSL_SESSION *new_sess; + /* * We reused an existing session, so we need to replace it with a new * one */ if ((new_sess = ssl_session_dup(s->session, 0)) == 0) { - al = SSL_AD_INTERNAL_ERROR; - SSLerr(SSL_F_TLS_PROCESS_NEW_SESSION_TICKET, ERR_R_MALLOC_FAILURE); - goto f_err; + SSLfatal(s, SSL_AD_INTERNAL_ERROR, + SSL_F_TLS_PROCESS_NEW_SESSION_TICKET, + ERR_R_MALLOC_FAILURE); + goto err; } - if (i & SSL_SESS_CACHE_CLIENT) { + if ((s->session_ctx->session_cache_mode & SSL_SESS_CACHE_CLIENT) != 0 + && !SSL_IS_TLS13(s)) { /* - * Remove the old session from the cache. We carry on if this fails + * In TLSv1.2 and below the arrival of a new tickets signals that + * any old ticket we were using is now out of date, so we remove the + * old session from the cache. We carry on if this fails */ SSL_CTX_remove_session(s->session_ctx, s->session); } @@ -2463,13 +2635,14 @@ MSG_PROCESS_RETURN tls_process_new_session_ticket(SSL *s, PACKET *pkt) s->session->ext.tick = OPENSSL_malloc(ticklen); if (s->session->ext.tick == NULL) { - SSLerr(SSL_F_TLS_PROCESS_NEW_SESSION_TICKET, ERR_R_MALLOC_FAILURE); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_PROCESS_NEW_SESSION_TICKET, + ERR_R_MALLOC_FAILURE); goto err; } if (!PACKET_copy_bytes(pkt, s->session->ext.tick, ticklen)) { - al = SSL_AD_DECODE_ERROR; - SSLerr(SSL_F_TLS_PROCESS_NEW_SESSION_TICKET, SSL_R_LENGTH_MISMATCH); - goto f_err; + SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PROCESS_NEW_SESSION_TICKET, + SSL_R_LENGTH_MISMATCH); + goto err; } s->session->ext.tick_lifetime_hint = ticket_lifetime_hint; @@ -2480,15 +2653,21 @@ MSG_PROCESS_RETURN tls_process_new_session_ticket(SSL *s, PACKET *pkt) PACKET extpkt; if (!PACKET_as_length_prefixed_2(pkt, &extpkt) - || PACKET_remaining(pkt) != 0 - || !tls_collect_extensions(s, &extpkt, - SSL_EXT_TLS1_3_NEW_SESSION_TICKET, - &exts, &al, NULL, 1) + || PACKET_remaining(pkt) != 0) { + SSLfatal(s, SSL_AD_DECODE_ERROR, + SSL_F_TLS_PROCESS_NEW_SESSION_TICKET, + SSL_R_LENGTH_MISMATCH); + goto err; + } + + if (!tls_collect_extensions(s, &extpkt, + SSL_EXT_TLS1_3_NEW_SESSION_TICKET, &exts, + NULL, 1) || !tls_parse_all_extensions(s, SSL_EXT_TLS1_3_NEW_SESSION_TICKET, - exts, NULL, 0, &al, 1)) { - SSLerr(SSL_F_TLS_PROCESS_NEW_SESSION_TICKET, SSL_R_BAD_EXTENSION); - goto f_err; + exts, NULL, 0, 1)) { + /* SSLfatal() already called */ + goto err; } } @@ -2500,69 +2679,101 @@ MSG_PROCESS_RETURN tls_process_new_session_ticket(SSL *s, PACKET *pkt) * other way is to set zero length session ID when the ticket is * presented and rely on the handshake to determine session resumption. * We choose the former approach because this fits in with assumptions - * elsewhere in OpenSSL. The session ID is set to the SHA256 (or SHA1 is - * SHA256 is disabled) hash of the ticket. + * elsewhere in OpenSSL. The session ID is set to the SHA256 hash of the + * ticket. */ + sha256 = EVP_MD_fetch(s->ctx->libctx, "SHA2-256", s->ctx->propq); + if (sha256 == NULL) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_PROCESS_NEW_SESSION_TICKET, + SSL_R_ALGORITHM_FETCH_FAILED); + goto err; + } /* * TODO(size_t): we use sess_len here because EVP_Digest expects an int * but s->session->session_id_length is a size_t */ if (!EVP_Digest(s->session->ext.tick, ticklen, s->session->session_id, &sess_len, - EVP_sha256(), NULL)) { - SSLerr(SSL_F_TLS_PROCESS_NEW_SESSION_TICKET, ERR_R_EVP_LIB); + sha256, NULL)) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_PROCESS_NEW_SESSION_TICKET, + ERR_R_EVP_LIB); goto err; } + EVP_MD_free(sha256); + sha256 = NULL; s->session->session_id_length = sess_len; + s->session->not_resumable = 0; /* This is a standalone message in TLSv1.3, so there is no more to read */ if (SSL_IS_TLS13(s)) { + const EVP_MD *md = ssl_handshake_md(s); + int hashleni = EVP_MD_size(md); + size_t hashlen; + static const unsigned char nonce_label[] = "resumption"; + + /* Ensure cast to size_t is safe */ + if (!ossl_assert(hashleni >= 0)) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, + SSL_F_TLS_PROCESS_NEW_SESSION_TICKET, + ERR_R_INTERNAL_ERROR); + goto err; + } + hashlen = (size_t)hashleni; + + if (!tls13_hkdf_expand(s, md, s->resumption_master_secret, + nonce_label, + sizeof(nonce_label) - 1, + PACKET_data(&nonce), + PACKET_remaining(&nonce), + s->session->master_key, + hashlen, 1)) { + /* SSLfatal() already called */ + goto err; + } + s->session->master_key_length = hashlen; + OPENSSL_free(exts); ssl_update_cache(s, SSL_SESS_CACHE_CLIENT); return MSG_PROCESS_FINISHED_READING; } return MSG_PROCESS_CONTINUE_READING; - f_err: - ssl3_send_alert(s, SSL3_AL_FATAL, al); err: - ossl_statem_set_error(s); + EVP_MD_free(sha256); OPENSSL_free(exts); return MSG_PROCESS_ERROR; } /* * In TLSv1.3 this is called from the extensions code, otherwise it is used to - * parse a separate message. Returns 1 on success or 0 on failure. On failure - * |*al| is populated with a suitable alert code. + * parse a separate message. Returns 1 on success or 0 on failure */ -int tls_process_cert_status_body(SSL *s, PACKET *pkt, int *al) +int tls_process_cert_status_body(SSL *s, PACKET *pkt) { size_t resplen; unsigned int type; if (!PACKET_get_1(pkt, &type) || type != TLSEXT_STATUSTYPE_ocsp) { - *al = SSL_AD_DECODE_ERROR; - SSLerr(SSL_F_TLS_PROCESS_CERT_STATUS_BODY, - SSL_R_UNSUPPORTED_STATUS_TYPE); + SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PROCESS_CERT_STATUS_BODY, + SSL_R_UNSUPPORTED_STATUS_TYPE); return 0; } if (!PACKET_get_net_3_len(pkt, &resplen) || PACKET_remaining(pkt) != resplen) { - *al = SSL_AD_DECODE_ERROR; - SSLerr(SSL_F_TLS_PROCESS_CERT_STATUS_BODY, SSL_R_LENGTH_MISMATCH); + SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PROCESS_CERT_STATUS_BODY, + SSL_R_LENGTH_MISMATCH); return 0; } s->ext.ocsp.resp = OPENSSL_malloc(resplen); if (s->ext.ocsp.resp == NULL) { - *al = SSL_AD_INTERNAL_ERROR; - SSLerr(SSL_F_TLS_PROCESS_CERT_STATUS_BODY, ERR_R_MALLOC_FAILURE); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_PROCESS_CERT_STATUS_BODY, + ERR_R_MALLOC_FAILURE); return 0; } if (!PACKET_copy_bytes(pkt, s->ext.ocsp.resp, resplen)) { - *al = SSL_AD_DECODE_ERROR; - SSLerr(SSL_F_TLS_PROCESS_CERT_STATUS_BODY, SSL_R_LENGTH_MISMATCH); + SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PROCESS_CERT_STATUS_BODY, + SSL_R_LENGTH_MISMATCH); return 0; } s->ext.ocsp.resp_len = resplen; @@ -2573,11 +2784,8 @@ int tls_process_cert_status_body(SSL *s, PACKET *pkt, int *al) MSG_PROCESS_RETURN tls_process_cert_status(SSL *s, PACKET *pkt) { - int al; - - if (!tls_process_cert_status_body(s, pkt, &al)) { - ssl3_send_alert(s, SSL3_AL_FATAL, al); - ossl_statem_set_error(s); + if (!tls_process_cert_status_body(s, pkt)) { + /* SSLfatal() already called */ return MSG_PROCESS_ERROR; } @@ -2590,14 +2798,14 @@ MSG_PROCESS_RETURN tls_process_cert_status(SSL *s, PACKET *pkt) * In <=TLS1.2 this is after the ServerDone message. Returns 1 on success or 0 * on failure. */ -int tls_process_initial_server_flight(SSL *s, int *al) +int tls_process_initial_server_flight(SSL *s) { /* * at this point we check that we have the required stuff from * the server */ if (!ssl3_check_cert_and_algorithm(s)) { - *al = SSL_AD_HANDSHAKE_FAILURE; + /* SSLfatal() already called */ return 0; } @@ -2611,15 +2819,15 @@ int tls_process_initial_server_flight(SSL *s, int *al) int ret = s->ctx->ext.status_cb(s, s->ctx->ext.status_arg); if (ret == 0) { - *al = SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE; - SSLerr(SSL_F_TLS_PROCESS_INITIAL_SERVER_FLIGHT, - SSL_R_INVALID_STATUS_RESPONSE); + SSLfatal(s, SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE, + SSL_F_TLS_PROCESS_INITIAL_SERVER_FLIGHT, + SSL_R_INVALID_STATUS_RESPONSE); return 0; } if (ret < 0) { - *al = SSL_AD_INTERNAL_ERROR; - SSLerr(SSL_F_TLS_PROCESS_INITIAL_SERVER_FLIGHT, - ERR_R_MALLOC_FAILURE); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, + SSL_F_TLS_PROCESS_INITIAL_SERVER_FLIGHT, + ERR_R_MALLOC_FAILURE); return 0; } } @@ -2627,7 +2835,7 @@ int tls_process_initial_server_flight(SSL *s, int *al) if (s->ct_validation_callback != NULL) { /* Note we validate the SCTs whether or not we abort on error */ if (!ssl_validate_ct(s) && (s->verify_mode & SSL_VERIFY_PEER)) { - *al = SSL_AD_HANDSHAKE_FAILURE; + /* SSLfatal() already called */ return 0; } } @@ -2638,38 +2846,31 @@ int tls_process_initial_server_flight(SSL *s, int *al) MSG_PROCESS_RETURN tls_process_server_done(SSL *s, PACKET *pkt) { - int al = SSL_AD_INTERNAL_ERROR; - if (PACKET_remaining(pkt) > 0) { /* should contain no data */ - al = SSL_AD_DECODE_ERROR; - SSLerr(SSL_F_TLS_PROCESS_SERVER_DONE, SSL_R_LENGTH_MISMATCH); - goto err; + SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PROCESS_SERVER_DONE, + SSL_R_LENGTH_MISMATCH); + return MSG_PROCESS_ERROR; } #ifndef OPENSSL_NO_SRP - if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kSRP) { + if (s->s3.tmp.new_cipher->algorithm_mkey & SSL_kSRP) { if (SRP_Calc_A_param(s) <= 0) { - SSLerr(SSL_F_TLS_PROCESS_SERVER_DONE, SSL_R_SRP_A_CALC); - goto err; + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_PROCESS_SERVER_DONE, + SSL_R_SRP_A_CALC); + return MSG_PROCESS_ERROR; } } #endif - /* - * Error queue messages are generated directly by this function - */ - if (!tls_process_initial_server_flight(s, &al)) - goto err; + if (!tls_process_initial_server_flight(s)) { + /* SSLfatal() already called */ + return MSG_PROCESS_ERROR; + } return MSG_PROCESS_FINISHED_READING; - - err: - ssl3_send_alert(s, SSL3_AL_FATAL, al); - ossl_statem_set_error(s); - return MSG_PROCESS_ERROR; } -static int tls_construct_cke_psk_preamble(SSL *s, WPACKET *pkt, int *al) +static int tls_construct_cke_psk_preamble(SSL *s, WPACKET *pkt) { #ifndef OPENSSL_NO_PSK int ret = 0; @@ -2686,8 +2887,8 @@ static int tls_construct_cke_psk_preamble(SSL *s, WPACKET *pkt, int *al) size_t psklen = 0; if (s->psk_client_callback == NULL) { - SSLerr(SSL_F_TLS_CONSTRUCT_CKE_PSK_PREAMBLE, SSL_R_PSK_NO_CLIENT_CB); - *al = SSL_AD_INTERNAL_ERROR; + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_PSK_PREAMBLE, + SSL_R_PSK_NO_CLIENT_CB); goto err; } @@ -2698,42 +2899,42 @@ static int tls_construct_cke_psk_preamble(SSL *s, WPACKET *pkt, int *al) psk, sizeof(psk)); if (psklen > PSK_MAX_PSK_LEN) { - SSLerr(SSL_F_TLS_CONSTRUCT_CKE_PSK_PREAMBLE, ERR_R_INTERNAL_ERROR); - *al = SSL_AD_HANDSHAKE_FAILURE; + SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, + SSL_F_TLS_CONSTRUCT_CKE_PSK_PREAMBLE, ERR_R_INTERNAL_ERROR); goto err; } else if (psklen == 0) { - SSLerr(SSL_F_TLS_CONSTRUCT_CKE_PSK_PREAMBLE, - SSL_R_PSK_IDENTITY_NOT_FOUND); - *al = SSL_AD_HANDSHAKE_FAILURE; + SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, + SSL_F_TLS_CONSTRUCT_CKE_PSK_PREAMBLE, + SSL_R_PSK_IDENTITY_NOT_FOUND); goto err; } identitylen = strlen(identity); if (identitylen > PSK_MAX_IDENTITY_LEN) { - SSLerr(SSL_F_TLS_CONSTRUCT_CKE_PSK_PREAMBLE, ERR_R_INTERNAL_ERROR); - *al = SSL_AD_INTERNAL_ERROR; + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_PSK_PREAMBLE, + ERR_R_INTERNAL_ERROR); goto err; } tmppsk = OPENSSL_memdup(psk, psklen); tmpidentity = OPENSSL_strdup(identity); if (tmppsk == NULL || tmpidentity == NULL) { - SSLerr(SSL_F_TLS_CONSTRUCT_CKE_PSK_PREAMBLE, ERR_R_MALLOC_FAILURE); - *al = SSL_AD_INTERNAL_ERROR; + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_PSK_PREAMBLE, + ERR_R_MALLOC_FAILURE); goto err; } - OPENSSL_free(s->s3->tmp.psk); - s->s3->tmp.psk = tmppsk; - s->s3->tmp.psklen = psklen; + OPENSSL_free(s->s3.tmp.psk); + s->s3.tmp.psk = tmppsk; + s->s3.tmp.psklen = psklen; tmppsk = NULL; OPENSSL_free(s->session->psk_identity); s->session->psk_identity = tmpidentity; tmpidentity = NULL; if (!WPACKET_sub_memcpy_u16(pkt, identity, identitylen)) { - SSLerr(SSL_F_TLS_CONSTRUCT_CKE_PSK_PREAMBLE, ERR_R_INTERNAL_ERROR); - *al = SSL_AD_INTERNAL_ERROR; + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_PSK_PREAMBLE, + ERR_R_INTERNAL_ERROR); goto err; } @@ -2747,13 +2948,13 @@ static int tls_construct_cke_psk_preamble(SSL *s, WPACKET *pkt, int *al) return ret; #else - SSLerr(SSL_F_TLS_CONSTRUCT_CKE_PSK_PREAMBLE, ERR_R_INTERNAL_ERROR); - *al = SSL_AD_INTERNAL_ERROR; + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_PSK_PREAMBLE, + ERR_R_INTERNAL_ERROR); return 0; #endif } -static int tls_construct_cke_rsa(SSL *s, WPACKET *pkt, int *al) +static int tls_construct_cke_rsa(SSL *s, WPACKET *pkt) { #ifndef OPENSSL_NO_RSA unsigned char *encdata = NULL; @@ -2767,45 +2968,53 @@ static int tls_construct_cke_rsa(SSL *s, WPACKET *pkt, int *al) /* * We should always have a server certificate with SSL_kRSA. */ - SSLerr(SSL_F_TLS_CONSTRUCT_CKE_RSA, ERR_R_INTERNAL_ERROR); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_RSA, + ERR_R_INTERNAL_ERROR); return 0; } pkey = X509_get0_pubkey(s->session->peer); if (EVP_PKEY_get0_RSA(pkey) == NULL) { - SSLerr(SSL_F_TLS_CONSTRUCT_CKE_RSA, ERR_R_INTERNAL_ERROR); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_RSA, + ERR_R_INTERNAL_ERROR); return 0; } pmslen = SSL_MAX_MASTER_KEY_LENGTH; pms = OPENSSL_malloc(pmslen); if (pms == NULL) { - SSLerr(SSL_F_TLS_CONSTRUCT_CKE_RSA, ERR_R_MALLOC_FAILURE); - *al = SSL_AD_INTERNAL_ERROR; + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_RSA, + ERR_R_MALLOC_FAILURE); return 0; } pms[0] = s->client_version >> 8; pms[1] = s->client_version & 0xff; /* TODO(size_t): Convert this function */ - if (ssl_randbytes(s, pms + 2, (int)(pmslen - 2)) <= 0) { + if (RAND_bytes_ex(s->ctx->libctx, pms + 2, (int)(pmslen - 2)) <= 0) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_RSA, + ERR_R_MALLOC_FAILURE); goto err; } /* Fix buf for TLS and beyond */ if (s->version > SSL3_VERSION && !WPACKET_start_sub_packet_u16(pkt)) { - SSLerr(SSL_F_TLS_CONSTRUCT_CKE_RSA, ERR_R_INTERNAL_ERROR); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_RSA, + ERR_R_INTERNAL_ERROR); goto err; } - pctx = EVP_PKEY_CTX_new(pkey, NULL); + + pctx = EVP_PKEY_CTX_new_from_pkey(s->ctx->libctx, pkey, s->ctx->propq); if (pctx == NULL || EVP_PKEY_encrypt_init(pctx) <= 0 || EVP_PKEY_encrypt(pctx, NULL, &enclen, pms, pmslen) <= 0) { - SSLerr(SSL_F_TLS_CONSTRUCT_CKE_RSA, ERR_R_EVP_LIB); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_RSA, + ERR_R_EVP_LIB); goto err; } if (!WPACKET_allocate_bytes(pkt, enclen, &encdata) || EVP_PKEY_encrypt(pctx, encdata, &enclen, pms, pmslen) <= 0) { - SSLerr(SSL_F_TLS_CONSTRUCT_CKE_RSA, SSL_R_BAD_RSA_ENCRYPT); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_RSA, + SSL_R_BAD_RSA_ENCRYPT); goto err; } EVP_PKEY_CTX_free(pctx); @@ -2813,16 +3022,19 @@ static int tls_construct_cke_rsa(SSL *s, WPACKET *pkt, int *al) /* Fix buf for TLS and beyond */ if (s->version > SSL3_VERSION && !WPACKET_close(pkt)) { - SSLerr(SSL_F_TLS_CONSTRUCT_CKE_RSA, ERR_R_INTERNAL_ERROR); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_RSA, + ERR_R_INTERNAL_ERROR); goto err; } /* Log the premaster secret, if logging is enabled. */ - if (!ssl_log_rsa_client_key_exchange(s, encdata, enclen, pms, pmslen)) + if (!ssl_log_rsa_client_key_exchange(s, encdata, enclen, pms, pmslen)) { + /* SSLfatal() already called */ goto err; + } - s->s3->tmp.pms = pms; - s->s3->tmp.pmslen = pmslen; + s->s3.tmp.pms = pms; + s->s3.tmp.pmslen = pmslen; return 1; err: @@ -2831,13 +3043,13 @@ static int tls_construct_cke_rsa(SSL *s, WPACKET *pkt, int *al) return 0; #else - SSLerr(SSL_F_TLS_CONSTRUCT_CKE_RSA, ERR_R_INTERNAL_ERROR); - *al = SSL_AD_INTERNAL_ERROR; + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_RSA, + ERR_R_INTERNAL_ERROR); return 0; #endif } -static int tls_construct_cke_dhe(SSL *s, WPACKET *pkt, int *al) +static int tls_construct_cke_dhe(SSL *s, WPACKET *pkt) { #ifndef OPENSSL_NO_DH DH *dh_clnt = NULL; @@ -2845,23 +3057,41 @@ static int tls_construct_cke_dhe(SSL *s, WPACKET *pkt, int *al) EVP_PKEY *ckey = NULL, *skey = NULL; unsigned char *keybytes = NULL; - skey = s->s3->peer_tmp; - if (skey == NULL) + skey = s->s3.peer_tmp; + if (skey == NULL) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_DHE, + ERR_R_INTERNAL_ERROR); goto err; + } - ckey = ssl_generate_pkey(skey); - if (ckey == NULL) + ckey = ssl_generate_pkey(s, skey); + if (ckey == NULL) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_DHE, + ERR_R_INTERNAL_ERROR); goto err; + } dh_clnt = EVP_PKEY_get0_DH(ckey); - if (dh_clnt == NULL || ssl_derive(s, ckey, skey, 0) == 0) + if (dh_clnt == NULL) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_DHE, + ERR_R_INTERNAL_ERROR); goto err; + } + + if (ssl_derive(s, ckey, skey, 0) == 0) { + /* SSLfatal() already called */ + goto err; + } /* send off the data */ DH_get0_key(dh_clnt, &pub_key, NULL); - if (!WPACKET_sub_allocate_bytes_u16(pkt, BN_num_bytes(pub_key), &keybytes)) + if (!WPACKET_sub_allocate_bytes_u16(pkt, BN_num_bytes(pub_key), + &keybytes)) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_DHE, + ERR_R_INTERNAL_ERROR); goto err; + } BN_bn2bin(pub_key, keybytes); EVP_PKEY_free(ckey); @@ -2869,13 +3099,15 @@ static int tls_construct_cke_dhe(SSL *s, WPACKET *pkt, int *al) return 1; err: EVP_PKEY_free(ckey); -#endif - SSLerr(SSL_F_TLS_CONSTRUCT_CKE_DHE, ERR_R_INTERNAL_ERROR); - *al = SSL_AD_INTERNAL_ERROR; return 0; +#else + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_DHE, + ERR_R_INTERNAL_ERROR); + return 0; +#endif } -static int tls_construct_cke_ecdhe(SSL *s, WPACKET *pkt, int *al) +static int tls_construct_cke_ecdhe(SSL *s, WPACKET *pkt) { #ifndef OPENSSL_NO_EC unsigned char *encodedPoint = NULL; @@ -2883,20 +3115,22 @@ static int tls_construct_cke_ecdhe(SSL *s, WPACKET *pkt, int *al) EVP_PKEY *ckey = NULL, *skey = NULL; int ret = 0; - skey = s->s3->peer_tmp; + skey = s->s3.peer_tmp; if (skey == NULL) { - SSLerr(SSL_F_TLS_CONSTRUCT_CKE_ECDHE, ERR_R_INTERNAL_ERROR); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_ECDHE, + ERR_R_INTERNAL_ERROR); return 0; } - ckey = ssl_generate_pkey(skey); + ckey = ssl_generate_pkey(s, skey); if (ckey == NULL) { - SSLerr(SSL_F_TLS_CONSTRUCT_CKE_ECDHE, ERR_R_MALLOC_FAILURE); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_ECDHE, + ERR_R_MALLOC_FAILURE); goto err; } if (ssl_derive(s, ckey, skey, 0) == 0) { - SSLerr(SSL_F_TLS_CONSTRUCT_CKE_ECDHE, ERR_R_EVP_LIB); + /* SSLfatal() already called */ goto err; } @@ -2904,12 +3138,14 @@ static int tls_construct_cke_ecdhe(SSL *s, WPACKET *pkt, int *al) encoded_pt_len = EVP_PKEY_get1_tls_encodedpoint(ckey, &encodedPoint); if (encoded_pt_len == 0) { - SSLerr(SSL_F_TLS_CONSTRUCT_CKE_ECDHE, ERR_R_EC_LIB); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_ECDHE, + ERR_R_EC_LIB); goto err; } if (!WPACKET_sub_memcpy_u8(pkt, encodedPoint, encoded_pt_len)) { - SSLerr(SSL_F_TLS_CONSTRUCT_CKE_ECDHE, ERR_R_INTERNAL_ERROR); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_ECDHE, + ERR_R_INTERNAL_ERROR); goto err; } @@ -2919,13 +3155,13 @@ static int tls_construct_cke_ecdhe(SSL *s, WPACKET *pkt, int *al) EVP_PKEY_free(ckey); return ret; #else - SSLerr(SSL_F_TLS_CONSTRUCT_CKE_ECDHE, ERR_R_INTERNAL_ERROR); - *al = SSL_AD_INTERNAL_ERROR; + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_ECDHE, + ERR_R_INTERNAL_ERROR); return 0; #endif } -static int tls_construct_cke_gost(SSL *s, WPACKET *pkt, int *al) +static int tls_construct_cke_gost(SSL *s, WPACKET *pkt) { #ifndef OPENSSL_NO_GOST /* GOST key exchange message creation */ @@ -2939,24 +3175,25 @@ static int tls_construct_cke_gost(SSL *s, WPACKET *pkt, int *al) unsigned char *pms = NULL; size_t pmslen = 0; - if ((s->s3->tmp.new_cipher->algorithm_auth & SSL_aGOST12) != 0) + if ((s->s3.tmp.new_cipher->algorithm_auth & SSL_aGOST12) != 0) dgst_nid = NID_id_GostR3411_2012_256; /* * Get server certificate PKEY and create ctx from it */ peer_cert = s->session->peer; - if (!peer_cert) { - *al = SSL_AD_HANDSHAKE_FAILURE; - SSLerr(SSL_F_TLS_CONSTRUCT_CKE_GOST, + if (peer_cert == NULL) { + SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_TLS_CONSTRUCT_CKE_GOST, SSL_R_NO_GOST_CERTIFICATE_SENT_BY_PEER); return 0; } - pkey_ctx = EVP_PKEY_CTX_new(X509_get0_pubkey(peer_cert), NULL); + pkey_ctx = EVP_PKEY_CTX_new_from_pkey(s->ctx->libctx, + X509_get0_pubkey(peer_cert), + s->ctx->propq); if (pkey_ctx == NULL) { - *al = SSL_AD_INTERNAL_ERROR; - SSLerr(SSL_F_TLS_CONSTRUCT_CKE_GOST, ERR_R_MALLOC_FAILURE); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_GOST, + ERR_R_MALLOC_FAILURE); return 0; } /* @@ -2969,8 +3206,8 @@ static int tls_construct_cke_gost(SSL *s, WPACKET *pkt, int *al) pmslen = 32; pms = OPENSSL_malloc(pmslen); if (pms == NULL) { - *al = SSL_AD_INTERNAL_ERROR; - SSLerr(SSL_F_TLS_CONSTRUCT_CKE_GOST, ERR_R_MALLOC_FAILURE); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_GOST, + ERR_R_MALLOC_FAILURE); goto err; } @@ -2978,9 +3215,9 @@ static int tls_construct_cke_gost(SSL *s, WPACKET *pkt, int *al) /* Generate session key * TODO(size_t): Convert this function */ - || ssl_randbytes(s, pms, (int)pmslen) <= 0) { - *al = SSL_AD_INTERNAL_ERROR; - SSLerr(SSL_F_TLS_CONSTRUCT_CKE_GOST, ERR_R_INTERNAL_ERROR); + || RAND_bytes_ex(s->ctx->libctx, pms, (int)pmslen) <= 0) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_GOST, + ERR_R_INTERNAL_ERROR); goto err; }; /* @@ -2990,21 +3227,21 @@ static int tls_construct_cke_gost(SSL *s, WPACKET *pkt, int *al) ukm_hash = EVP_MD_CTX_new(); if (ukm_hash == NULL || EVP_DigestInit(ukm_hash, EVP_get_digestbynid(dgst_nid)) <= 0 - || EVP_DigestUpdate(ukm_hash, s->s3->client_random, + || EVP_DigestUpdate(ukm_hash, s->s3.client_random, SSL3_RANDOM_SIZE) <= 0 - || EVP_DigestUpdate(ukm_hash, s->s3->server_random, + || EVP_DigestUpdate(ukm_hash, s->s3.server_random, SSL3_RANDOM_SIZE) <= 0 || EVP_DigestFinal_ex(ukm_hash, shared_ukm, &md_len) <= 0) { - *al = SSL_AD_INTERNAL_ERROR; - SSLerr(SSL_F_TLS_CONSTRUCT_CKE_GOST, ERR_R_INTERNAL_ERROR); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_GOST, + ERR_R_INTERNAL_ERROR); goto err; } EVP_MD_CTX_free(ukm_hash); ukm_hash = NULL; if (EVP_PKEY_CTX_ctrl(pkey_ctx, -1, EVP_PKEY_OP_ENCRYPT, EVP_PKEY_CTRL_SET_IV, 8, shared_ukm) < 0) { - *al = SSL_AD_INTERNAL_ERROR; - SSLerr(SSL_F_TLS_CONSTRUCT_CKE_GOST, SSL_R_LIBRARY_BUG); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_GOST, + SSL_R_LIBRARY_BUG); goto err; } /* Make GOST keytransport blob message */ @@ -3013,22 +3250,22 @@ static int tls_construct_cke_gost(SSL *s, WPACKET *pkt, int *al) */ msglen = 255; if (EVP_PKEY_encrypt(pkey_ctx, tmp, &msglen, pms, pmslen) <= 0) { - *al = SSL_AD_INTERNAL_ERROR; - SSLerr(SSL_F_TLS_CONSTRUCT_CKE_GOST, SSL_R_LIBRARY_BUG); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_GOST, + SSL_R_LIBRARY_BUG); goto err; } if (!WPACKET_put_bytes_u8(pkt, V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED) || (msglen >= 0x80 && !WPACKET_put_bytes_u8(pkt, 0x81)) || !WPACKET_sub_memcpy_u8(pkt, tmp, msglen)) { - *al = SSL_AD_INTERNAL_ERROR; - SSLerr(SSL_F_TLS_CONSTRUCT_CKE_GOST, ERR_R_INTERNAL_ERROR); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_GOST, + ERR_R_INTERNAL_ERROR); goto err; } EVP_PKEY_CTX_free(pkey_ctx); - s->s3->tmp.pms = pms; - s->s3->tmp.pmslen = pmslen; + s->s3.tmp.pms = pms; + s->s3.tmp.pmslen = pmslen; return 1; err: @@ -3037,13 +3274,13 @@ static int tls_construct_cke_gost(SSL *s, WPACKET *pkt, int *al) EVP_MD_CTX_free(ukm_hash); return 0; #else - SSLerr(SSL_F_TLS_CONSTRUCT_CKE_GOST, ERR_R_INTERNAL_ERROR); - *al = SSL_AD_INTERNAL_ERROR; + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_GOST, + ERR_R_INTERNAL_ERROR); return 0; #endif } -static int tls_construct_cke_srp(SSL *s, WPACKET *pkt, int *al) +static int tls_construct_cke_srp(SSL *s, WPACKET *pkt) { #ifndef OPENSSL_NO_SRP unsigned char *abytes = NULL; @@ -3051,7 +3288,8 @@ static int tls_construct_cke_srp(SSL *s, WPACKET *pkt, int *al) if (s->srp_ctx.A == NULL || !WPACKET_sub_allocate_bytes_u16(pkt, BN_num_bytes(s->srp_ctx.A), &abytes)) { - SSLerr(SSL_F_TLS_CONSTRUCT_CKE_SRP, ERR_R_INTERNAL_ERROR); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_SRP, + ERR_R_INTERNAL_ERROR); return 0; } BN_bn2bin(s->srp_ctx.A, abytes); @@ -3059,14 +3297,15 @@ static int tls_construct_cke_srp(SSL *s, WPACKET *pkt, int *al) OPENSSL_free(s->session->srp_username); s->session->srp_username = OPENSSL_strdup(s->srp_ctx.login); if (s->session->srp_username == NULL) { - SSLerr(SSL_F_TLS_CONSTRUCT_CKE_SRP, ERR_R_MALLOC_FAILURE); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_SRP, + ERR_R_MALLOC_FAILURE); return 0; } return 1; #else - SSLerr(SSL_F_TLS_CONSTRUCT_CKE_SRP, ERR_R_INTERNAL_ERROR); - *al = SSL_AD_INTERNAL_ERROR; + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_CKE_SRP, + ERR_R_INTERNAL_ERROR); return 0; #endif } @@ -3074,44 +3313,45 @@ static int tls_construct_cke_srp(SSL *s, WPACKET *pkt, int *al) int tls_construct_client_key_exchange(SSL *s, WPACKET *pkt) { unsigned long alg_k; - int al = -1; - alg_k = s->s3->tmp.new_cipher->algorithm_mkey; + alg_k = s->s3.tmp.new_cipher->algorithm_mkey; + /* + * All of the construct functions below call SSLfatal() if necessary so + * no need to do so here. + */ if ((alg_k & SSL_PSK) - && !tls_construct_cke_psk_preamble(s, pkt, &al)) + && !tls_construct_cke_psk_preamble(s, pkt)) goto err; if (alg_k & (SSL_kRSA | SSL_kRSAPSK)) { - if (!tls_construct_cke_rsa(s, pkt, &al)) + if (!tls_construct_cke_rsa(s, pkt)) goto err; } else if (alg_k & (SSL_kDHE | SSL_kDHEPSK)) { - if (!tls_construct_cke_dhe(s, pkt, &al)) + if (!tls_construct_cke_dhe(s, pkt)) goto err; } else if (alg_k & (SSL_kECDHE | SSL_kECDHEPSK)) { - if (!tls_construct_cke_ecdhe(s, pkt, &al)) + if (!tls_construct_cke_ecdhe(s, pkt)) goto err; } else if (alg_k & SSL_kGOST) { - if (!tls_construct_cke_gost(s, pkt, &al)) + if (!tls_construct_cke_gost(s, pkt)) goto err; } else if (alg_k & SSL_kSRP) { - if (!tls_construct_cke_srp(s, pkt, &al)) + if (!tls_construct_cke_srp(s, pkt)) goto err; } else if (!(alg_k & SSL_kPSK)) { - ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR); - SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, + SSL_F_TLS_CONSTRUCT_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR); goto err; } return 1; err: - if (al != -1) - ssl3_send_alert(s, SSL3_AL_FATAL, al); - OPENSSL_clear_free(s->s3->tmp.pms, s->s3->tmp.pmslen); - s->s3->tmp.pms = NULL; + OPENSSL_clear_free(s->s3.tmp.pms, s->s3.tmp.pmslen); + s->s3.tmp.pms = NULL; #ifndef OPENSSL_NO_PSK - OPENSSL_clear_free(s->s3->tmp.psk, s->s3->tmp.psklen); - s->s3->tmp.psk = NULL; + OPENSSL_clear_free(s->s3.tmp.psk, s->s3.tmp.psklen); + s->s3.tmp.psk = NULL; #endif return 0; } @@ -3121,29 +3361,27 @@ int tls_client_key_exchange_post_work(SSL *s) unsigned char *pms = NULL; size_t pmslen = 0; - pms = s->s3->tmp.pms; - pmslen = s->s3->tmp.pmslen; + pms = s->s3.tmp.pms; + pmslen = s->s3.tmp.pmslen; #ifndef OPENSSL_NO_SRP /* Check for SRP */ - if (s->s3->tmp.new_cipher->algorithm_mkey & SSL_kSRP) { + if (s->s3.tmp.new_cipher->algorithm_mkey & SSL_kSRP) { if (!srp_generate_client_master_secret(s)) { - SSLerr(SSL_F_TLS_CLIENT_KEY_EXCHANGE_POST_WORK, - ERR_R_INTERNAL_ERROR); + /* SSLfatal() already called */ goto err; } return 1; } #endif - if (pms == NULL && !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)) { - ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR); - SSLerr(SSL_F_TLS_CLIENT_KEY_EXCHANGE_POST_WORK, ERR_R_MALLOC_FAILURE); + if (pms == NULL && !(s->s3.tmp.new_cipher->algorithm_mkey & SSL_kPSK)) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, + SSL_F_TLS_CLIENT_KEY_EXCHANGE_POST_WORK, ERR_R_MALLOC_FAILURE); goto err; } if (!ssl_generate_master_secret(s, pms, pmslen, 1)) { - ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR); - SSLerr(SSL_F_TLS_CLIENT_KEY_EXCHANGE_POST_WORK, ERR_R_INTERNAL_ERROR); + /* SSLfatal() already called */ /* ssl_generate_master_secret frees the pms even on error */ pms = NULL; pmslen = 0; @@ -3156,6 +3394,7 @@ int tls_client_key_exchange_post_work(SSL *s) if (SSL_IS_DTLS(s)) { unsigned char sctpauthkey[64]; char labelbuffer[sizeof(DTLS1_SCTP_AUTH_LABEL)]; + size_t labellen; /* * Add new shared key for SCTP-Auth, will be ignored if no SCTP @@ -3164,10 +3403,19 @@ int tls_client_key_exchange_post_work(SSL *s) memcpy(labelbuffer, DTLS1_SCTP_AUTH_LABEL, sizeof(DTLS1_SCTP_AUTH_LABEL)); + /* Don't include the terminating zero. */ + labellen = sizeof(labelbuffer) - 1; + if (s->mode & SSL_MODE_DTLS_SCTP_LABEL_LENGTH_BUG) + labellen += 1; + if (SSL_export_keying_material(s, sctpauthkey, sizeof(sctpauthkey), labelbuffer, - sizeof(labelbuffer), NULL, 0, 0) <= 0) + labellen, NULL, 0, 0) <= 0) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, + SSL_F_TLS_CLIENT_KEY_EXCHANGE_POST_WORK, + ERR_R_INTERNAL_ERROR); goto err; + } BIO_ctrl(SSL_get_wbio(s), BIO_CTRL_DGRAM_SCTP_ADD_AUTH_KEY, sizeof(sctpauthkey), sctpauthkey); @@ -3177,7 +3425,7 @@ int tls_client_key_exchange_post_work(SSL *s) return 1; err: OPENSSL_clear_free(pms, pmslen); - s->s3->tmp.pms = NULL; + s->s3.tmp.pms = NULL; return 0; } @@ -3189,7 +3437,7 @@ int tls_client_key_exchange_post_work(SSL *s) static int ssl3_check_client_certificate(SSL *s) { /* If no suitable signature algorithm can't use certificate */ - if (!tls_choose_sigalg(s, NULL) || s->s3->tmp.sigalg == NULL) + if (!tls_choose_sigalg(s, 0) || s->s3.tmp.sigalg == NULL) return 0; /* * If strict mode check suitability of chain before using it. This also @@ -3216,14 +3464,19 @@ WORK_STATE tls_prepare_client_certificate(SSL *s, WORK_STATE wst) return WORK_MORE_A; } if (i == 0) { - ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR); - ossl_statem_set_error(s); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, + SSL_F_TLS_PREPARE_CLIENT_CERTIFICATE, + SSL_R_CALLBACK_FAILED); return WORK_ERROR; } s->rwstate = SSL_NOTHING; } - if (ssl3_check_client_certificate(s)) + if (ssl3_check_client_certificate(s)) { + if (s->post_handshake_auth == SSL_PHA_REQUESTED) { + return WORK_FINISHED_STOP; + } return WORK_FINISHED_CONTINUE; + } /* Fall through to WORK_MORE_B */ wst = WORK_MORE_B; @@ -3256,61 +3509,66 @@ WORK_STATE tls_prepare_client_certificate(SSL *s, WORK_STATE wst) i = 0; if (i == 0) { if (s->version == SSL3_VERSION) { - s->s3->tmp.cert_req = 0; + s->s3.tmp.cert_req = 0; ssl3_send_alert(s, SSL3_AL_WARNING, SSL_AD_NO_CERTIFICATE); return WORK_FINISHED_CONTINUE; } else { - s->s3->tmp.cert_req = 2; + s->s3.tmp.cert_req = 2; if (!ssl3_digest_cached_records(s, 0)) { - ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR); - ossl_statem_set_error(s); + /* SSLfatal() already called */ return WORK_ERROR; } } } + if (s->post_handshake_auth == SSL_PHA_REQUESTED) + return WORK_FINISHED_STOP; return WORK_FINISHED_CONTINUE; } /* Shouldn't ever get here */ + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_PREPARE_CLIENT_CERTIFICATE, + ERR_R_INTERNAL_ERROR); return WORK_ERROR; } int tls_construct_client_certificate(SSL *s, WPACKET *pkt) { - int al = SSL_AD_INTERNAL_ERROR; - - /* - * TODO(TLS1.3): For now we must put an empty context. Needs to be filled in - * later - */ - if ((SSL_IS_TLS13(s) && !WPACKET_put_bytes_u8(pkt, 0)) - || !ssl3_output_cert_chain(s, pkt, - (s->s3->tmp.cert_req == 2) ? NULL - : s->cert->key, - &al)) { - SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_CERTIFICATE, ERR_R_INTERNAL_ERROR); - goto err; + if (SSL_IS_TLS13(s)) { + if (s->pha_context == NULL) { + /* no context available, add 0-length context */ + if (!WPACKET_put_bytes_u8(pkt, 0)) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, + SSL_F_TLS_CONSTRUCT_CLIENT_CERTIFICATE, ERR_R_INTERNAL_ERROR); + return 0; + } + } else if (!WPACKET_sub_memcpy_u8(pkt, s->pha_context, s->pha_context_len)) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, + SSL_F_TLS_CONSTRUCT_CLIENT_CERTIFICATE, ERR_R_INTERNAL_ERROR); + return 0; + } + } + if (!ssl3_output_cert_chain(s, pkt, + (s->s3.tmp.cert_req == 2) ? NULL + : s->cert->key)) { + /* SSLfatal() already called */ + return 0; } if (SSL_IS_TLS13(s) && SSL_IS_FIRST_HANDSHAKE(s) && (!s->method->ssl3_enc->change_cipher_state(s, SSL3_CC_HANDSHAKE | SSL3_CHANGE_CIPHER_CLIENT_WRITE))) { - SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_CERTIFICATE, - SSL_R_CANNOT_CHANGE_CIPHER); /* - * This is a fatal error, which leaves - * enc_write_ctx in an inconsistent state - * and thus ssl3_send_alert may crash. + * This is a fatal error, which leaves enc_write_ctx in an inconsistent + * state and thus ssl3_send_alert may crash. */ + SSLfatal(s, SSL_AD_NO_ALERT, SSL_F_TLS_CONSTRUCT_CLIENT_CERTIFICATE, + SSL_R_CANNOT_CHANGE_CIPHER); return 0; } return 1; - err: - ssl3_send_alert(s, SSL3_AL_FATAL, al); - return 0; } int ssl3_check_cert_and_algorithm(SSL *s) @@ -3318,10 +3576,9 @@ int ssl3_check_cert_and_algorithm(SSL *s) const SSL_CERT_LOOKUP *clu; size_t idx; long alg_k, alg_a; - int al = SSL_AD_HANDSHAKE_FAILURE; - alg_k = s->s3->tmp.new_cipher->algorithm_mkey; - alg_a = s->s3->tmp.new_cipher->algorithm_auth; + alg_k = s->s3.tmp.new_cipher->algorithm_mkey; + alg_a = s->s3.tmp.new_cipher->algorithm_auth; /* we don't have a certificate */ if (!(alg_a & SSL_aCERT)) @@ -3332,37 +3589,38 @@ int ssl3_check_cert_and_algorithm(SSL *s) /* Check certificate is recognised and suitable for cipher */ if (clu == NULL || (alg_a & clu->amask) == 0) { - SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM, SSL_R_MISSING_SIGNING_CERT); - goto f_err; + SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, + SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM, + SSL_R_MISSING_SIGNING_CERT); + return 0; } #ifndef OPENSSL_NO_EC if (clu->amask & SSL_aECDSA) { if (ssl_check_srvr_ecc_cert_and_alg(s->session->peer, s)) return 1; - SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM, SSL_R_BAD_ECC_CERT); - goto f_err; + SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, + SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM, SSL_R_BAD_ECC_CERT); + return 0; } #endif #ifndef OPENSSL_NO_RSA if (alg_k & (SSL_kRSA | SSL_kRSAPSK) && idx != SSL_PKEY_RSA) { - SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM, - SSL_R_MISSING_RSA_ENCRYPTING_CERT); - goto f_err; + SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, + SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM, + SSL_R_MISSING_RSA_ENCRYPTING_CERT); + return 0; } #endif #ifndef OPENSSL_NO_DH - if ((alg_k & SSL_kDHE) && (s->s3->peer_tmp == NULL)) { - al = SSL_AD_INTERNAL_ERROR; - SSLerr(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM, ERR_R_INTERNAL_ERROR); - goto f_err; + if ((alg_k & SSL_kDHE) && (s->s3.peer_tmp == NULL)) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM, + ERR_R_INTERNAL_ERROR); + return 0; } #endif return 1; - f_err: - ssl3_send_alert(s, SSL3_AL_FATAL, al); - return 0; } #ifndef OPENSSL_NO_NEXTPROTONEG @@ -3376,16 +3634,14 @@ int tls_construct_next_proto(SSL *s, WPACKET *pkt) if (!WPACKET_sub_memcpy_u8(pkt, s->ext.npn, len) || !WPACKET_sub_allocate_bytes_u8(pkt, padding_len, &padding)) { - SSLerr(SSL_F_TLS_CONSTRUCT_NEXT_PROTO, ERR_R_INTERNAL_ERROR); - goto err; + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_NEXT_PROTO, + ERR_R_INTERNAL_ERROR); + return 0; } memset(padding, 0, padding_len); return 1; - err: - ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR); - return 0; } #endif @@ -3393,9 +3649,8 @@ MSG_PROCESS_RETURN tls_process_hello_req(SSL *s, PACKET *pkt) { if (PACKET_remaining(pkt) > 0) { /* should contain no data */ - SSLerr(SSL_F_TLS_PROCESS_HELLO_REQ, SSL_R_LENGTH_MISMATCH); - ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_DECODE_ERROR); - ossl_statem_set_error(s); + SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PROCESS_HELLO_REQ, + SSL_R_LENGTH_MISMATCH); return MSG_PROCESS_ERROR; } @@ -3421,30 +3676,29 @@ MSG_PROCESS_RETURN tls_process_hello_req(SSL *s, PACKET *pkt) static MSG_PROCESS_RETURN tls_process_encrypted_extensions(SSL *s, PACKET *pkt) { - int al = SSL_AD_INTERNAL_ERROR; PACKET extensions; RAW_EXTENSION *rawexts = NULL; if (!PACKET_as_length_prefixed_2(pkt, &extensions) || PACKET_remaining(pkt) != 0) { - al = SSL_AD_DECODE_ERROR; - SSLerr(SSL_F_TLS_PROCESS_ENCRYPTED_EXTENSIONS, SSL_R_LENGTH_MISMATCH); + SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PROCESS_ENCRYPTED_EXTENSIONS, + SSL_R_LENGTH_MISMATCH); goto err; } if (!tls_collect_extensions(s, &extensions, SSL_EXT_TLS1_3_ENCRYPTED_EXTENSIONS, &rawexts, - &al, NULL, 1) + NULL, 1) || !tls_parse_all_extensions(s, SSL_EXT_TLS1_3_ENCRYPTED_EXTENSIONS, - rawexts, NULL, 0, &al, 1)) + rawexts, NULL, 0, 1)) { + /* SSLfatal() already called */ goto err; + } OPENSSL_free(rawexts); return MSG_PROCESS_CONTINUE_READING; err: - ssl3_send_alert(s, SSL3_AL_FATAL, al); - ossl_statem_set_error(s); OPENSSL_free(rawexts); return MSG_PROCESS_ERROR; } @@ -3471,11 +3725,19 @@ int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk, WPACKET *pkt) int i; size_t totlen = 0, len, maxlen, maxverok = 0; int empty_reneg_info_scsv = !s->renegotiate; + /* Set disabled masks for this session */ - ssl_set_client_disabled(s); + if (!ssl_set_client_disabled(s)) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CIPHER_LIST_TO_BYTES, + SSL_R_NO_PROTOCOLS_AVAILABLE); + return 0; + } - if (sk == NULL) + if (sk == NULL) { + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CIPHER_LIST_TO_BYTES, + ERR_R_INTERNAL_ERROR); return 0; + } #ifdef OPENSSL_MAX_TLS1_2_CIPHER_LENGTH # if OPENSSL_MAX_TLS1_2_CIPHER_LENGTH < 6 @@ -3507,19 +3769,20 @@ int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk, WPACKET *pkt) continue; if (!s->method->put_cipher_by_char(c, pkt, &len)) { - SSLerr(SSL_F_SSL_CIPHER_LIST_TO_BYTES, ERR_R_INTERNAL_ERROR); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CIPHER_LIST_TO_BYTES, + ERR_R_INTERNAL_ERROR); return 0; } /* Sanity check that the maximum version we offer has ciphers enabled */ if (!maxverok) { if (SSL_IS_DTLS(s)) { - if (DTLS_VERSION_GE(c->max_dtls, s->s3->tmp.max_ver) - && DTLS_VERSION_LE(c->min_dtls, s->s3->tmp.max_ver)) + if (DTLS_VERSION_GE(c->max_dtls, s->s3.tmp.max_ver) + && DTLS_VERSION_LE(c->min_dtls, s->s3.tmp.max_ver)) maxverok = 1; } else { - if (c->max_tls >= s->s3->tmp.max_ver - && c->min_tls <= s->s3->tmp.max_ver) + if (c->max_tls >= s->s3.tmp.max_ver + && c->min_tls <= s->s3.tmp.max_ver) maxverok = 1; } } @@ -3528,7 +3791,8 @@ int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk, WPACKET *pkt) } if (totlen == 0 || !maxverok) { - SSLerr(SSL_F_SSL_CIPHER_LIST_TO_BYTES, SSL_R_NO_CIPHERS_AVAILABLE); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CIPHER_LIST_TO_BYTES, + SSL_R_NO_CIPHERS_AVAILABLE); if (!maxverok) ERR_add_error_data(1, "No ciphers enabled for max supported " @@ -3543,7 +3807,8 @@ int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk, WPACKET *pkt) 0, NULL, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; if (!s->method->put_cipher_by_char(&scsv, pkt, &len)) { - SSLerr(SSL_F_SSL_CIPHER_LIST_TO_BYTES, ERR_R_INTERNAL_ERROR); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, + SSL_F_SSL_CIPHER_LIST_TO_BYTES, ERR_R_INTERNAL_ERROR); return 0; } } @@ -3552,7 +3817,8 @@ int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk, WPACKET *pkt) 0, NULL, NULL, SSL3_CK_FALLBACK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; if (!s->method->put_cipher_by_char(&scsv, pkt, &len)) { - SSLerr(SSL_F_SSL_CIPHER_LIST_TO_BYTES, ERR_R_INTERNAL_ERROR); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, + SSL_F_SSL_CIPHER_LIST_TO_BYTES, ERR_R_INTERNAL_ERROR); return 0; } } @@ -3565,8 +3831,9 @@ int tls_construct_end_of_early_data(SSL *s, WPACKET *pkt) { if (s->early_data_state != SSL_EARLY_DATA_WRITE_RETRY && s->early_data_state != SSL_EARLY_DATA_FINISHED_WRITING) { - SSLerr(SSL_F_TLS_CONSTRUCT_END_OF_EARLY_DATA, - ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); + SSLfatal(s, SSL_AD_INTERNAL_ERROR, + SSL_F_TLS_CONSTRUCT_END_OF_EARLY_DATA, + ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); return 0; }