X-Git-Url: https://git.openssl.org/?p=openssl.git;a=blobdiff_plain;f=ssl%2Fs3_lib.c;h=d7b8fb03bc660234a8ac21825cefc86cefa10739;hp=16696526443d18973da5b3b308badadb72d86638;hb=c80149d9f09b3a5a5b1621fa705e900d455334d4;hpb=38f2837b1b1b3d1bd417cd1032a3dd3b264352ef

diff --git a/ssl/s3_lib.c b/ssl/s3_lib.c
index 1669652644..d7b8fb03bc 100644
--- a/ssl/s3_lib.c
+++ b/ssl/s3_lib.c
@@ -1,5 +1,7 @@
 /*
  * Copyright 1995-2017 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
  * this file except in compliance with the License.  You can obtain a copy
@@ -7,46 +9,6 @@
  * https://www.openssl.org/source/license.html
  */
 
-/* ====================================================================
- * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
- *
- * Portions of the attached software ("Contribution") are developed by
- * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
- *
- * The Contribution is licensed pursuant to the OpenSSL open source
- * license provided above.
- *
- * ECC cipher suite support in OpenSSL originally written by
- * Vipul Gupta and Sumit Gupta of Sun Microsystems Laboratories.
- *
- */
-/* ====================================================================
- * Copyright 2005 Nokia. All rights reserved.
- *
- * The portions of the attached software ("Contribution") is developed by
- * Nokia Corporation and is licensed pursuant to the OpenSSL open source
- * license.
- *
- * The Contribution, originally written by Mika Kousa and Pasi Eronen of
- * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
- * support (see RFC 4279) to OpenSSL.
- *
- * No patent licenses or other rights except those expressly stated in
- * the OpenSSL open source license shall be deemed granted or received
- * expressly, by implication, estoppel, or otherwise.
- *
- * No assurances are provided by Nokia that the Contribution does not
- * infringe the patent or other intellectual property rights of any third
- * party or that the license provides you with all the necessary rights
- * to make use of the Contribution.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
- * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
- * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
- * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
- * OTHERWISE.
- */
-
 #include <stdio.h>
 #include <openssl/objects.h>
 #include "ssl_locl.h"
@@ -57,6 +19,14 @@
 #define SSL3_NUM_CIPHERS        OSSL_NELEM(ssl3_ciphers)
 #define SSL3_NUM_SCSVS          OSSL_NELEM(ssl3_scsvs)
 
+/* TLSv1.3 downgrade protection sentinel values */
+const unsigned char tls11downgrade[] = {
+    0x44, 0x4f, 0x57, 0x4e, 0x47, 0x52, 0x44, 0x00
+};
+const unsigned char tls12downgrade[] = {
+    0x44, 0x4f, 0x57, 0x4e, 0x47, 0x52, 0x44, 0x01
+};
+
 /*
  * The list of available ciphers, mostly organized into the following
  * groups:
@@ -922,7 +892,7 @@ static SSL_CIPHER ssl3_ciphers[] = {
      SSL_aECDSA,
      SSL_eNULL,
      SSL_SHA1,
-     SSL3_VERSION, TLS1_2_VERSION,
+     TLS1_VERSION, TLS1_2_VERSION,
      DTLS1_BAD_VER, DTLS1_2_VERSION,
      SSL_STRONG_NONE | SSL_FIPS,
      SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
@@ -938,7 +908,7 @@ static SSL_CIPHER ssl3_ciphers[] = {
      SSL_aECDSA,
      SSL_3DES,
      SSL_SHA1,
-     SSL3_VERSION, TLS1_2_VERSION,
+     TLS1_VERSION, TLS1_2_VERSION,
      DTLS1_BAD_VER, DTLS1_2_VERSION,
      SSL_NOT_DEFAULT | SSL_MEDIUM | SSL_FIPS,
      SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
@@ -954,7 +924,7 @@ static SSL_CIPHER ssl3_ciphers[] = {
      SSL_aECDSA,
      SSL_AES128,
      SSL_SHA1,
-     SSL3_VERSION, TLS1_2_VERSION,
+     TLS1_VERSION, TLS1_2_VERSION,
      DTLS1_BAD_VER, DTLS1_2_VERSION,
      SSL_HIGH | SSL_FIPS,
      SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
@@ -969,7 +939,7 @@ static SSL_CIPHER ssl3_ciphers[] = {
      SSL_aECDSA,
      SSL_AES256,
      SSL_SHA1,
-     SSL3_VERSION, TLS1_2_VERSION,
+     TLS1_VERSION, TLS1_2_VERSION,
      DTLS1_BAD_VER, DTLS1_2_VERSION,
      SSL_HIGH | SSL_FIPS,
      SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
@@ -984,7 +954,7 @@ static SSL_CIPHER ssl3_ciphers[] = {
      SSL_aRSA,
      SSL_eNULL,
      SSL_SHA1,
-     SSL3_VERSION, TLS1_2_VERSION,
+     TLS1_VERSION, TLS1_2_VERSION,
      DTLS1_BAD_VER, DTLS1_2_VERSION,
      SSL_STRONG_NONE | SSL_FIPS,
      SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
@@ -1000,7 +970,7 @@ static SSL_CIPHER ssl3_ciphers[] = {
      SSL_aRSA,
      SSL_3DES,
      SSL_SHA1,
-     SSL3_VERSION, TLS1_2_VERSION,
+     TLS1_VERSION, TLS1_2_VERSION,
      DTLS1_BAD_VER, DTLS1_2_VERSION,
      SSL_NOT_DEFAULT | SSL_MEDIUM | SSL_FIPS,
      SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
@@ -1016,7 +986,7 @@ static SSL_CIPHER ssl3_ciphers[] = {
      SSL_aRSA,
      SSL_AES128,
      SSL_SHA1,
-     SSL3_VERSION, TLS1_2_VERSION,
+     TLS1_VERSION, TLS1_2_VERSION,
      DTLS1_BAD_VER, DTLS1_2_VERSION,
      SSL_HIGH | SSL_FIPS,
      SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
@@ -1031,7 +1001,7 @@ static SSL_CIPHER ssl3_ciphers[] = {
      SSL_aRSA,
      SSL_AES256,
      SSL_SHA1,
-     SSL3_VERSION, TLS1_2_VERSION,
+     TLS1_VERSION, TLS1_2_VERSION,
      DTLS1_BAD_VER, DTLS1_2_VERSION,
      SSL_HIGH | SSL_FIPS,
      SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
@@ -1046,7 +1016,7 @@ static SSL_CIPHER ssl3_ciphers[] = {
      SSL_aNULL,
      SSL_eNULL,
      SSL_SHA1,
-     SSL3_VERSION, TLS1_2_VERSION,
+     TLS1_VERSION, TLS1_2_VERSION,
      DTLS1_BAD_VER, DTLS1_2_VERSION,
      SSL_STRONG_NONE | SSL_FIPS,
      SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
@@ -1062,7 +1032,7 @@ static SSL_CIPHER ssl3_ciphers[] = {
      SSL_aNULL,
      SSL_3DES,
      SSL_SHA1,
-     SSL3_VERSION, TLS1_2_VERSION,
+     TLS1_VERSION, TLS1_2_VERSION,
      DTLS1_BAD_VER, DTLS1_2_VERSION,
      SSL_NOT_DEFAULT | SSL_MEDIUM | SSL_FIPS,
      SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
@@ -1078,7 +1048,7 @@ static SSL_CIPHER ssl3_ciphers[] = {
      SSL_aNULL,
      SSL_AES128,
      SSL_SHA1,
-     SSL3_VERSION, TLS1_2_VERSION,
+     TLS1_VERSION, TLS1_2_VERSION,
      DTLS1_BAD_VER, DTLS1_2_VERSION,
      SSL_NOT_DEFAULT | SSL_HIGH | SSL_FIPS,
      SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
@@ -1093,7 +1063,7 @@ static SSL_CIPHER ssl3_ciphers[] = {
      SSL_aNULL,
      SSL_AES256,
      SSL_SHA1,
-     SSL3_VERSION, TLS1_2_VERSION,
+     TLS1_VERSION, TLS1_2_VERSION,
      DTLS1_BAD_VER, DTLS1_2_VERSION,
      SSL_NOT_DEFAULT | SSL_HIGH | SSL_FIPS,
      SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
@@ -1689,7 +1659,7 @@ static SSL_CIPHER ssl3_ciphers[] = {
      SSL_aPSK,
      SSL_3DES,
      SSL_SHA1,
-     SSL3_VERSION, TLS1_2_VERSION,
+     TLS1_VERSION, TLS1_2_VERSION,
      DTLS1_BAD_VER, DTLS1_2_VERSION,
      SSL_NOT_DEFAULT | SSL_MEDIUM | SSL_FIPS,
      SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
@@ -1705,7 +1675,7 @@ static SSL_CIPHER ssl3_ciphers[] = {
      SSL_aPSK,
      SSL_AES128,
      SSL_SHA1,
-     SSL3_VERSION, TLS1_2_VERSION,
+     TLS1_VERSION, TLS1_2_VERSION,
      DTLS1_BAD_VER, DTLS1_2_VERSION,
      SSL_HIGH | SSL_FIPS,
      SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
@@ -1720,7 +1690,7 @@ static SSL_CIPHER ssl3_ciphers[] = {
      SSL_aPSK,
      SSL_AES256,
      SSL_SHA1,
-     SSL3_VERSION, TLS1_2_VERSION,
+     TLS1_VERSION, TLS1_2_VERSION,
      DTLS1_BAD_VER, DTLS1_2_VERSION,
      SSL_HIGH | SSL_FIPS,
      SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
@@ -1765,7 +1735,7 @@ static SSL_CIPHER ssl3_ciphers[] = {
      SSL_aPSK,
      SSL_eNULL,
      SSL_SHA1,
-     SSL3_VERSION, TLS1_2_VERSION,
+     TLS1_VERSION, TLS1_2_VERSION,
      DTLS1_BAD_VER, DTLS1_2_VERSION,
      SSL_STRONG_NONE | SSL_FIPS,
      SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
@@ -2692,7 +2662,7 @@ static SSL_CIPHER ssl3_ciphers[] = {
      SSL_aPSK,
      SSL_RC4,
      SSL_SHA1,
-     SSL3_VERSION, TLS1_2_VERSION,
+     TLS1_VERSION, TLS1_2_VERSION,
      0, 0,
      SSL_NOT_DEFAULT | SSL_MEDIUM,
      SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
@@ -2707,7 +2677,7 @@ static SSL_CIPHER ssl3_ciphers[] = {
      SSL_aNULL,
      SSL_RC4,
      SSL_SHA1,
-     SSL3_VERSION, TLS1_2_VERSION,
+     TLS1_VERSION, TLS1_2_VERSION,
      0, 0,
      SSL_NOT_DEFAULT | SSL_MEDIUM,
      SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
@@ -2722,7 +2692,7 @@ static SSL_CIPHER ssl3_ciphers[] = {
      SSL_aECDSA,
      SSL_RC4,
      SSL_SHA1,
-     SSL3_VERSION, TLS1_2_VERSION,
+     TLS1_VERSION, TLS1_2_VERSION,
      0, 0,
      SSL_NOT_DEFAULT | SSL_MEDIUM,
      SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
@@ -2737,7 +2707,7 @@ static SSL_CIPHER ssl3_ciphers[] = {
      SSL_aRSA,
      SSL_RC4,
      SSL_SHA1,
-     SSL3_VERSION, TLS1_2_VERSION,
+     TLS1_VERSION, TLS1_2_VERSION,
      0, 0,
      SSL_NOT_DEFAULT | SSL_MEDIUM,
      SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
@@ -2905,10 +2875,13 @@ int ssl3_new(SSL *s)
     if (!SSL_SRP_CTX_init(s))
         goto err;
 #endif
-    s->method->ssl_clear(s);
-    return (1);
+
+    if (!s->method->ssl_clear(s))
+        return 0;
+
+    return 1;
  err:
-    return (0);
+    return 0;
 }
 
 void ssl3_free(SSL *s)
@@ -2926,7 +2899,7 @@ void ssl3_free(SSL *s)
 #endif
 
     OPENSSL_free(s->s3->tmp.ctype);
-    sk_X509_NAME_pop_free(s->s3->tmp.ca_names, X509_NAME_free);
+    sk_X509_NAME_pop_free(s->s3->tmp.peer_ca_names, X509_NAME_free);
     OPENSSL_free(s->s3->tmp.ciphers_raw);
     OPENSSL_clear_free(s->s3->tmp.pms, s->s3->tmp.pmslen);
     OPENSSL_free(s->s3->tmp.peer_sigalgs);
@@ -2941,11 +2914,11 @@ void ssl3_free(SSL *s)
     s->s3 = NULL;
 }
 
-void ssl3_clear(SSL *s)
+int ssl3_clear(SSL *s)
 {
     ssl3_cleanup_key_block(s);
     OPENSSL_free(s->s3->tmp.ctype);
-    sk_X509_NAME_pop_free(s->s3->tmp.ca_names, X509_NAME_free);
+    sk_X509_NAME_pop_free(s->s3->tmp.peer_ca_names, X509_NAME_free);
     OPENSSL_free(s->s3->tmp.ciphers_raw);
     OPENSSL_clear_free(s->s3->tmp.pms, s->s3->tmp.pmslen);
     OPENSSL_free(s->s3->tmp.peer_sigalgs);
@@ -2963,7 +2936,8 @@ void ssl3_clear(SSL *s)
     /* NULL/zero-out everything in the s3 struct */
     memset(s->s3, 0, sizeof(*s->s3));
 
-    ssl_free_wbio_buffer(s);
+    if (!ssl_free_wbio_buffer(s))
+        return 0;
 
     s->version = SSL3_VERSION;
 
@@ -2972,6 +2946,8 @@ void ssl3_clear(SSL *s)
     s->ext.npn = NULL;
     s->ext.npn_len = 0;
 #endif
+
+    return 1;
 }
 
 #ifndef OPENSSL_NO_SRP
@@ -3457,7 +3433,12 @@ long ssl3_ctx_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
     case SSL_CTRL_SET_TLS_EXT_SRP_PASSWORD:
         ctx->srp_ctx.SRP_give_srp_client_pwd_callback =
             srp_password_from_info_cb;
-        ctx->srp_ctx.info = parg;
+        if (ctx->srp_ctx.info != NULL)
+            OPENSSL_free(ctx->srp_ctx.info);
+        if ((ctx->srp_ctx.info = BUF_strdup((char *)parg)) == NULL) {
+            SSLerr(SSL_F_SSL3_CTX_CTRL, ERR_R_INTERNAL_ERROR);
+            return 0;
+        }
         break;
     case SSL_CTRL_SET_SRP_ARG:
         ctx->srp_ctx.srp_Mask |= SSL_kSRP;
@@ -3661,7 +3642,7 @@ const SSL_CIPHER *ssl3_choose_cipher(SSL *s, STACK_OF(SSL_CIPHER) *clnt,
     const SSL_CIPHER *c, *ret = NULL;
     STACK_OF(SSL_CIPHER) *prio, *allow;
     int i, ii, ok;
-    unsigned long alg_k = 0, alg_a = 0, mask_k, mask_a;
+    unsigned long alg_k = 0, alg_a = 0, mask_k = 0, mask_a = 0;
 
     /* Let's see which ciphers we can support */
 
@@ -3695,8 +3676,10 @@ const SSL_CIPHER *ssl3_choose_cipher(SSL *s, STACK_OF(SSL_CIPHER) *clnt,
         allow = srvr;
     }
 
-    tls1_set_cert_validity(s);
-    ssl_set_masks(s);
+    if (!SSL_IS_TLS13(s)) {
+        tls1_set_cert_validity(s);
+        ssl_set_masks(s);
+    }
 
     for (i = 0; i < sk_SSL_CIPHER_num(prio); i++) {
         c = sk_SSL_CIPHER_value(prio, i);
@@ -3709,6 +3692,7 @@ const SSL_CIPHER *ssl3_choose_cipher(SSL *s, STACK_OF(SSL_CIPHER) *clnt,
             (DTLS_VERSION_LT(s->version, c->min_dtls) ||
              DTLS_VERSION_GT(s->version, c->max_dtls)))
             continue;
+
         /*
          * Since TLS 1.3 ciphersuites can be used with any auth or
          * key exchange scheme skip tests.
@@ -4007,9 +3991,10 @@ long ssl_get_algorithm2(SSL *s)
  * Fill a ClientRandom or ServerRandom field of length len. Returns <= 0 on
  * failure, 1 on success.
  */
-int ssl_fill_hello_random(SSL *s, int server, unsigned char *result, size_t len)
+int ssl_fill_hello_random(SSL *s, int server, unsigned char *result, size_t len,
+                          DOWNGRADE dgrd)
 {
-    int send_time = 0;
+    int send_time = 0, ret;
 
     if (len < 4)
         return 0;
@@ -4022,9 +4007,24 @@ int ssl_fill_hello_random(SSL *s, int server, unsigned char *result, size_t len)
         unsigned char *p = result;
         l2n(Time, p);
         /* TODO(size_t): Convert this */
-        return RAND_bytes(p, (int)(len - 4));
-    } else
-        return RAND_bytes(result, (int)len);
+        ret = RAND_bytes(p, (int)(len - 4));
+    } else {
+        ret = RAND_bytes(result, (int)len);
+    }
+#ifndef OPENSSL_NO_TLS13DOWNGRADE
+    if (ret) {
+        if (!ossl_assert(sizeof(tls11downgrade) < len)
+                || !ossl_assert(sizeof(tls12downgrade) < len))
+             return 0;
+        if (dgrd == DOWNGRADE_TO_1_2)
+            memcpy(result + len - sizeof(tls12downgrade), tls12downgrade,
+                   sizeof(tls12downgrade));
+        else if (dgrd == DOWNGRADE_TO_1_1)
+            memcpy(result + len - sizeof(tls11downgrade), tls11downgrade,
+                   sizeof(tls11downgrade));
+    }
+#endif
+    return ret;
 }
 
 int ssl_generate_master_secret(SSL *s, unsigned char *pms, size_t pmslen,