595 lines
21 KiB
Diff
595 lines
21 KiB
Diff
Index: crypto/openssl/apps/s_client.c
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===================================================================
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--- crypto/openssl/apps/s_client.c (revision 273303)
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+++ crypto/openssl/apps/s_client.c (working copy)
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@@ -226,6 +226,7 @@ static void sc_usage(void)
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BIO_printf(bio_err," -ssl3 - just use SSLv3\n");
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BIO_printf(bio_err," -tls1 - just use TLSv1\n");
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BIO_printf(bio_err," -dtls1 - just use DTLSv1\n");
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+ BIO_printf(bio_err," -fallback_scsv - send TLS_FALLBACK_SCSV\n");
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BIO_printf(bio_err," -mtu - set the link layer MTU\n");
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BIO_printf(bio_err," -no_tls1/-no_ssl3/-no_ssl2 - turn off that protocol\n");
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BIO_printf(bio_err," -bugs - Switch on all SSL implementation bug workarounds\n");
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@@ -339,6 +340,7 @@ int MAIN(int argc, char **argv)
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char *sess_out = NULL;
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struct sockaddr peer;
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int peerlen = sizeof(peer);
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+ int fallback_scsv = 0;
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int enable_timeouts = 0 ;
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long socket_mtu = 0;
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#ifndef OPENSSL_NO_JPAKE
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@@ -488,6 +490,10 @@ int MAIN(int argc, char **argv)
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socket_mtu = atol(*(++argv));
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}
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#endif
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+ else if (strcmp(*argv,"-fallback_scsv") == 0)
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+ {
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+ fallback_scsv = 1;
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+ }
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else if (strcmp(*argv,"-bugs") == 0)
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bugs=1;
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else if (strcmp(*argv,"-keyform") == 0)
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@@ -778,6 +784,10 @@ bad:
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SSL_set_session(con, sess);
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SSL_SESSION_free(sess);
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}
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+
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+ if (fallback_scsv)
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+ SSL_set_mode(con, SSL_MODE_SEND_FALLBACK_SCSV);
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+
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#ifndef OPENSSL_NO_TLSEXT
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if (servername != NULL)
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{
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Index: crypto/openssl/crypto/err/openssl.ec
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===================================================================
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--- crypto/openssl/crypto/err/openssl.ec (revision 273303)
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+++ crypto/openssl/crypto/err/openssl.ec (working copy)
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@@ -69,6 +69,7 @@ R SSL_R_TLSV1_ALERT_EXPORT_RESTRICTION 1060
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R SSL_R_TLSV1_ALERT_PROTOCOL_VERSION 1070
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R SSL_R_TLSV1_ALERT_INSUFFICIENT_SECURITY 1071
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R SSL_R_TLSV1_ALERT_INTERNAL_ERROR 1080
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+R SSL_R_TLSV1_ALERT_INAPPROPRIATE_FALLBACK 1086
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R SSL_R_TLSV1_ALERT_USER_CANCELLED 1090
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R SSL_R_TLSV1_ALERT_NO_RENEGOTIATION 1100
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R SSL_R_TLSV1_UNSUPPORTED_EXTENSION 1110
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Index: crypto/openssl/doc/apps/s_client.pod
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===================================================================
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--- crypto/openssl/doc/apps/s_client.pod (revision 273303)
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+++ crypto/openssl/doc/apps/s_client.pod (working copy)
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@@ -34,6 +34,7 @@ B<openssl> B<s_client>
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[B<-no_ssl2>]
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[B<-no_ssl3>]
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[B<-no_tls1>]
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+[B<-fallback_scsv>]
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[B<-bugs>]
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[B<-cipher cipherlist>]
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[B<-starttls protocol>]
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@@ -167,11 +168,14 @@ these options disable the use of certain SSL or TL
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the initial handshake uses a method which should be compatible with all
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servers and permit them to use SSL v3, SSL v2 or TLS as appropriate.
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-Unfortunately there are a lot of ancient and broken servers in use which
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+Unfortunately there are still ancient and broken servers in use which
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cannot handle this technique and will fail to connect. Some servers only
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-work if TLS is turned off with the B<-no_tls> option others will only
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-support SSL v2 and may need the B<-ssl2> option.
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+work if TLS is turned off.
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+=item B<-fallback_scsv>
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+
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+Send TLS_FALLBACK_SCSV in the ClientHello.
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+
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=item B<-bugs>
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there are several known bug in SSL and TLS implementations. Adding this
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Index: crypto/openssl/doc/ssl/SSL_CTX_set_mode.pod
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===================================================================
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--- crypto/openssl/doc/ssl/SSL_CTX_set_mode.pod (revision 273303)
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+++ crypto/openssl/doc/ssl/SSL_CTX_set_mode.pod (working copy)
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@@ -61,6 +61,12 @@ deal with read/write operations returning without
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flag SSL_MODE_AUTO_RETRY will cause read/write operations to only
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return after the handshake and successful completion.
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+=item SSL_MODE_FALLBACK_SCSV
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+
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+Send TLS_FALLBACK_SCSV in the ClientHello.
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+To be set by applications that reconnect with a downgraded protocol
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+version; see draft-ietf-tls-downgrade-scsv-00 for details.
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+
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=back
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=head1 RETURN VALUES
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Index: crypto/openssl/ssl/d1_lib.c
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===================================================================
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--- crypto/openssl/ssl/d1_lib.c (revision 273303)
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+++ crypto/openssl/ssl/d1_lib.c (working copy)
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@@ -305,6 +305,16 @@ long dtls1_ctrl(SSL *s, int cmd, long larg, void *
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case DTLS_CTRL_LISTEN:
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ret = dtls1_listen(s, parg);
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break;
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+ case SSL_CTRL_CHECK_PROTO_VERSION:
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+ /* For library-internal use; checks that the current protocol
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+ * is the highest enabled version (according to s->ctx->method,
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+ * as version negotiation may have changed s->method). */
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+#if DTLS_MAX_VERSION != DTLS1_VERSION
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+# error Code needs update for DTLS_method() support beyond DTLS1_VERSION.
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+#endif
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+ /* Just one protocol version is supported so far;
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+ * fail closed if the version is not as expected. */
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+ return s->version == DTLS_MAX_VERSION;
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default:
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ret = ssl3_ctrl(s, cmd, larg, parg);
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Index: crypto/openssl/ssl/dtls1.h
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===================================================================
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--- crypto/openssl/ssl/dtls1.h (revision 273303)
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+++ crypto/openssl/ssl/dtls1.h (working copy)
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@@ -80,6 +80,8 @@ extern "C" {
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#endif
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#define DTLS1_VERSION 0xFEFF
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+#define DTLS_MAX_VERSION DTLS1_VERSION
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+
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#define DTLS1_BAD_VER 0x0100
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#if 0
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@@ -262,4 +264,3 @@ typedef struct dtls1_record_data_st
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}
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#endif
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#endif
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-
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Index: crypto/openssl/ssl/s23_clnt.c
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===================================================================
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--- crypto/openssl/ssl/s23_clnt.c (revision 273303)
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+++ crypto/openssl/ssl/s23_clnt.c (working copy)
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@@ -72,9 +72,11 @@ static SSL_METHOD *ssl23_get_client_method(int ver
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if (ver == SSL2_VERSION)
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return(SSLv2_client_method());
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#endif
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+#ifndef OPENSSL_NO_SSL3
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if (ver == SSL3_VERSION)
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return(SSLv3_client_method());
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- else if (ver == TLS1_VERSION)
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+#endif
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+ if (ver == TLS1_VERSION)
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return(TLSv1_client_method());
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else
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return(NULL);
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@@ -533,6 +535,7 @@ static int ssl23_get_server_hello(SSL *s)
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{
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/* we have sslv3 or tls1 (server hello or alert) */
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+#ifndef OPENSSL_NO_SSL3
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if ((p[2] == SSL3_VERSION_MINOR) &&
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!(s->options & SSL_OP_NO_SSLv3))
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{
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@@ -547,7 +550,9 @@ static int ssl23_get_server_hello(SSL *s)
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s->version=SSL3_VERSION;
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s->method=SSLv3_client_method();
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}
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- else if ((p[2] == TLS1_VERSION_MINOR) &&
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+ else
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+#endif
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+ if ((p[2] == TLS1_VERSION_MINOR) &&
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!(s->options & SSL_OP_NO_TLSv1))
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{
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s->version=TLS1_VERSION;
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@@ -559,6 +564,9 @@ static int ssl23_get_server_hello(SSL *s)
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goto err;
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}
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+ /* ensure that TLS_MAX_VERSION is up-to-date */
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+ OPENSSL_assert(s->version <= TLS_MAX_VERSION);
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+
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if (p[0] == SSL3_RT_ALERT && p[5] != SSL3_AL_WARNING)
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{
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/* fatal alert */
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Index: crypto/openssl/ssl/s23_srvr.c
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===================================================================
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--- crypto/openssl/ssl/s23_srvr.c (revision 273303)
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+++ crypto/openssl/ssl/s23_srvr.c (working copy)
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@@ -124,9 +124,11 @@ static SSL_METHOD *ssl23_get_server_method(int ver
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if (ver == SSL2_VERSION)
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return(SSLv2_server_method());
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#endif
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+#ifndef OPENSSL_NO_SSL3
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if (ver == SSL3_VERSION)
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return(SSLv3_server_method());
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- else if (ver == TLS1_VERSION)
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+#endif
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+ if (ver == TLS1_VERSION)
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return(TLSv1_server_method());
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else
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return(NULL);
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@@ -398,6 +400,9 @@ int ssl23_get_client_hello(SSL *s)
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}
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#endif
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+ /* ensure that TLS_MAX_VERSION is up-to-date */
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+ OPENSSL_assert(s->version <= TLS_MAX_VERSION);
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+
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if (s->state == SSL23_ST_SR_CLNT_HELLO_B)
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{
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/* we have SSLv3/TLSv1 in an SSLv2 header
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@@ -554,6 +559,12 @@ int ssl23_get_client_hello(SSL *s)
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if ((type == 2) || (type == 3))
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{
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/* we have SSLv3/TLSv1 (type 2: SSL2 style, type 3: SSL3/TLS style) */
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+ s->method = ssl23_get_server_method(s->version);
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+ if (s->method == NULL)
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+ {
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+ SSLerr(SSL_F_SSL23_GET_CLIENT_HELLO,SSL_R_UNSUPPORTED_PROTOCOL);
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+ goto err;
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+ }
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if (!ssl_init_wbio_buffer(s,1)) goto err;
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@@ -577,11 +588,6 @@ int ssl23_get_client_hello(SSL *s)
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s->s3->rbuf.left=0;
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s->s3->rbuf.offset=0;
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}
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-
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- if (s->version == TLS1_VERSION)
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- s->method = TLSv1_server_method();
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- else
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- s->method = SSLv3_server_method();
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#if 0 /* ssl3_get_client_hello does this */
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s->client_version=(v[0]<<8)|v[1];
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#endif
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Index: crypto/openssl/ssl/s2_lib.c
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===================================================================
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--- crypto/openssl/ssl/s2_lib.c (revision 273303)
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+++ crypto/openssl/ssl/s2_lib.c (working copy)
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@@ -314,6 +314,8 @@ long ssl2_ctrl(SSL *s, int cmd, long larg, void *p
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case SSL_CTRL_GET_SESSION_REUSED:
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ret=s->hit;
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break;
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+ case SSL_CTRL_CHECK_PROTO_VERSION:
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+ return ssl3_ctrl(s, SSL_CTRL_CHECK_PROTO_VERSION, larg, parg);
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default:
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break;
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}
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@@ -362,7 +364,7 @@ int ssl2_put_cipher_by_char(const SSL_CIPHER *c, u
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if (p != NULL)
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{
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l=c->id;
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- if ((l & 0xff000000) != 0x02000000) return(0);
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+ if ((l & 0xff000000) != 0x02000000 && l != SSL3_CK_FALLBACK_SCSV) return(0);
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p[0]=((unsigned char)(l>>16L))&0xFF;
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p[1]=((unsigned char)(l>> 8L))&0xFF;
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p[2]=((unsigned char)(l ))&0xFF;
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Index: crypto/openssl/ssl/s3_enc.c
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===================================================================
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--- crypto/openssl/ssl/s3_enc.c (revision 273303)
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+++ crypto/openssl/ssl/s3_enc.c (working copy)
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@@ -764,7 +764,7 @@ int ssl3_alert_code(int code)
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case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE: return(SSL3_AD_HANDSHAKE_FAILURE);
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case SSL_AD_BAD_CERTIFICATE_HASH_VALUE: return(SSL3_AD_HANDSHAKE_FAILURE);
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case SSL_AD_UNKNOWN_PSK_IDENTITY:return(TLS1_AD_UNKNOWN_PSK_IDENTITY);
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+ case SSL_AD_INAPPROPRIATE_FALLBACK:return(TLS1_AD_INAPPROPRIATE_FALLBACK);
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default: return(-1);
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}
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}
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-
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Index: crypto/openssl/ssl/s3_lib.c
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===================================================================
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--- crypto/openssl/ssl/s3_lib.c (revision 273303)
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+++ crypto/openssl/ssl/s3_lib.c (working copy)
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@@ -1986,6 +1986,29 @@ long ssl3_ctrl(SSL *s, int cmd, long larg, void *p
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break;
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#endif /* !OPENSSL_NO_TLSEXT */
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+
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+ case SSL_CTRL_CHECK_PROTO_VERSION:
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+ /* For library-internal use; checks that the current protocol
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+ * is the highest enabled version (according to s->ctx->method,
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+ * as version negotiation may have changed s->method). */
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+ if (s->version == s->ctx->method->version)
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+ return 1;
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+ /* Apparently we're using a version-flexible SSL_METHOD
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+ * (not at its highest protocol version). */
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+ if (s->ctx->method->version == SSLv23_method()->version)
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+ {
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+#if TLS_MAX_VERSION != TLS1_VERSION
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+# error Code needs update for SSLv23_method() support beyond TLS1_VERSION.
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+#endif
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+ if (!(s->options & SSL_OP_NO_TLSv1))
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+ return s->version == TLS1_VERSION;
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+ if (!(s->options & SSL_OP_NO_SSLv3))
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+ return s->version == SSL3_VERSION;
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+ if (!(s->options & SSL_OP_NO_SSLv2))
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+ return s->version == SSL2_VERSION;
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+ }
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+ return 0; /* Unexpected state; fail closed. */
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+
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default:
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break;
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}
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@@ -2274,6 +2297,7 @@ long ssl3_ctx_callback_ctrl(SSL_CTX *ctx, int cmd,
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break;
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#endif
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+
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default:
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return(0);
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}
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Index: crypto/openssl/ssl/ssl.h
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===================================================================
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--- crypto/openssl/ssl/ssl.h (revision 273303)
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+++ crypto/openssl/ssl/ssl.h (working copy)
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@@ -563,6 +563,10 @@ typedef struct ssl_session_st
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#define SSL_MODE_AUTO_RETRY 0x00000004L
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/* Don't attempt to automatically build certificate chain */
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#define SSL_MODE_NO_AUTO_CHAIN 0x00000008L
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+/* Send TLS_FALLBACK_SCSV in the ClientHello.
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+ * To be set by applications that reconnect with a downgraded protocol
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+ * version; see draft-ietf-tls-downgrade-scsv-00 for details. */
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+#define SSL_MODE_SEND_FALLBACK_SCSV 0x00000080L
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/* Note: SSL[_CTX]_set_{options,mode} use |= op on the previous value,
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@@ -1209,6 +1213,7 @@ size_t SSL_get_peer_finished(const SSL *s, void *b
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#define SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE
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#define SSL_AD_BAD_CERTIFICATE_HASH_VALUE TLS1_AD_BAD_CERTIFICATE_HASH_VALUE
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#define SSL_AD_UNKNOWN_PSK_IDENTITY TLS1_AD_UNKNOWN_PSK_IDENTITY /* fatal */
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+#define SSL_AD_INAPPROPRIATE_FALLBACK TLS1_AD_INAPPROPRIATE_FALLBACK /* fatal */
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#define SSL_ERROR_NONE 0
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#define SSL_ERROR_SSL 1
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@@ -1298,6 +1303,8 @@ size_t SSL_get_peer_finished(const SSL *s, void *b
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#define SSL_CTRL_CLEAR_OPTIONS 77
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#define SSL_CTRL_CLEAR_MODE 78
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+#define SSL_CTRL_CHECK_PROTO_VERSION 119
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+
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#define DTLSv1_get_timeout(ssl, arg) \
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SSL_ctrl(ssl,DTLS_CTRL_GET_TIMEOUT,0, (void *)arg)
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#define DTLSv1_handle_timeout(ssl) \
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@@ -1945,6 +1952,7 @@ void ERR_load_SSL_strings(void);
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#define SSL_R_HTTPS_PROXY_REQUEST 155
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#define SSL_R_HTTP_REQUEST 156
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#define SSL_R_ILLEGAL_PADDING 283
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+#define SSL_R_INAPPROPRIATE_FALLBACK 373
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#define SSL_R_INVALID_CHALLENGE_LENGTH 158
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#define SSL_R_INVALID_COMMAND 280
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#define SSL_R_INVALID_PURPOSE 278
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@@ -2072,6 +2080,7 @@ void ERR_load_SSL_strings(void);
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#define SSL_R_TLSV1_ALERT_DECRYPTION_FAILED 1021
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#define SSL_R_TLSV1_ALERT_DECRYPT_ERROR 1051
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#define SSL_R_TLSV1_ALERT_EXPORT_RESTRICTION 1060
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+#define SSL_R_TLSV1_ALERT_INAPPROPRIATE_FALLBACK 1086
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#define SSL_R_TLSV1_ALERT_INSUFFICIENT_SECURITY 1071
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#define SSL_R_TLSV1_ALERT_INTERNAL_ERROR 1080
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#define SSL_R_TLSV1_ALERT_NO_RENEGOTIATION 1100
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Index: crypto/openssl/ssl/ssl3.h
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===================================================================
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--- crypto/openssl/ssl/ssl3.h (revision 273303)
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+++ crypto/openssl/ssl/ssl3.h (working copy)
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@@ -129,9 +129,14 @@
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extern "C" {
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#endif
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-/* Signalling cipher suite value: from draft-ietf-tls-renegotiation-03.txt */
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+/* Signalling cipher suite value from RFC 5746
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+ * (TLS_EMPTY_RENEGOTIATION_INFO_SCSV) */
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#define SSL3_CK_SCSV 0x030000FF
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+/* Signalling cipher suite value from draft-ietf-tls-downgrade-scsv-00
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+ * (TLS_FALLBACK_SCSV) */
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+#define SSL3_CK_FALLBACK_SCSV 0x03005600
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+
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#define SSL3_CK_RSA_NULL_MD5 0x03000001
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#define SSL3_CK_RSA_NULL_SHA 0x03000002
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#define SSL3_CK_RSA_RC4_40_MD5 0x03000003
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Index: crypto/openssl/ssl/ssl_err.c
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===================================================================
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--- crypto/openssl/ssl/ssl_err.c (revision 273303)
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+++ crypto/openssl/ssl/ssl_err.c (working copy)
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@@ -341,6 +341,7 @@ static ERR_STRING_DATA SSL_str_reasons[]=
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{ERR_REASON(SSL_R_HTTPS_PROXY_REQUEST) ,"https proxy request"},
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{ERR_REASON(SSL_R_HTTP_REQUEST) ,"http request"},
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{ERR_REASON(SSL_R_ILLEGAL_PADDING) ,"illegal padding"},
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+{ERR_REASON(SSL_R_INAPPROPRIATE_FALLBACK),"inappropriate fallback"},
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{ERR_REASON(SSL_R_INVALID_CHALLENGE_LENGTH),"invalid challenge length"},
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{ERR_REASON(SSL_R_INVALID_COMMAND) ,"invalid command"},
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{ERR_REASON(SSL_R_INVALID_PURPOSE) ,"invalid purpose"},
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@@ -468,6 +469,7 @@ static ERR_STRING_DATA SSL_str_reasons[]=
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{ERR_REASON(SSL_R_TLSV1_ALERT_DECRYPTION_FAILED),"tlsv1 alert decryption failed"},
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{ERR_REASON(SSL_R_TLSV1_ALERT_DECRYPT_ERROR),"tlsv1 alert decrypt error"},
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{ERR_REASON(SSL_R_TLSV1_ALERT_EXPORT_RESTRICTION),"tlsv1 alert export restriction"},
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+{ERR_REASON(SSL_R_TLSV1_ALERT_INAPPROPRIATE_FALLBACK),"tlsv1 alert inappropriate fallback"},
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{ERR_REASON(SSL_R_TLSV1_ALERT_INSUFFICIENT_SECURITY),"tlsv1 alert insufficient security"},
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{ERR_REASON(SSL_R_TLSV1_ALERT_INTERNAL_ERROR),"tlsv1 alert internal error"},
|
|
{ERR_REASON(SSL_R_TLSV1_ALERT_NO_RENEGOTIATION),"tlsv1 alert no renegotiation"},
|
|
Index: crypto/openssl/ssl/ssl_lib.c
|
|
===================================================================
|
|
--- crypto/openssl/ssl/ssl_lib.c (revision 273303)
|
|
+++ crypto/openssl/ssl/ssl_lib.c (working copy)
|
|
@@ -1296,6 +1296,8 @@ int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_C
|
|
|
|
if (sk == NULL) return(0);
|
|
q=p;
|
|
+ if (put_cb == NULL)
|
|
+ put_cb = s->method->put_cipher_by_char;
|
|
|
|
for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
|
|
{
|
|
@@ -1305,25 +1307,37 @@ int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_C
|
|
continue;
|
|
#endif /* OPENSSL_NO_KRB5 */
|
|
|
|
- j = put_cb ? put_cb(c,p) : ssl_put_cipher_by_char(s,c,p);
|
|
+ j = put_cb(c,p);
|
|
p+=j;
|
|
}
|
|
- /* If p == q, no ciphers and caller indicates an error. Otherwise
|
|
- * add SCSV if not renegotiating.
|
|
- */
|
|
- if (p != q && !s->new_session)
|
|
+ /* If p == q, no ciphers; caller indicates an error.
|
|
+ * Otherwise, add applicable SCSVs. */
|
|
+ if (p != q)
|
|
{
|
|
- static SSL_CIPHER scsv =
|
|
+ if (!s->new_session)
|
|
{
|
|
- 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0,
|
|
- };
|
|
- j = put_cb ? put_cb(&scsv,p) : ssl_put_cipher_by_char(s,&scsv,p);
|
|
- p+=j;
|
|
+ static SSL_CIPHER scsv =
|
|
+ {
|
|
+ 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0,
|
|
+ };
|
|
+ j = put_cb(&scsv,p);
|
|
+ p+=j;
|
|
#ifdef OPENSSL_RI_DEBUG
|
|
- fprintf(stderr, "SCSV sent by client\n");
|
|
+ fprintf(stderr, "TLS_EMPTY_RENEGOTIATION_INFO_SCSV sent by client\n");
|
|
#endif
|
|
- }
|
|
+ }
|
|
|
|
+ if (s->mode & SSL_MODE_SEND_FALLBACK_SCSV)
|
|
+ {
|
|
+ static SSL_CIPHER scsv =
|
|
+ {
|
|
+ 0, NULL, SSL3_CK_FALLBACK_SCSV, 0, 0, 0, 0, 0, 0, 0,
|
|
+ };
|
|
+ j = put_cb(&scsv,p);
|
|
+ p+=j;
|
|
+ }
|
|
+ }
|
|
+
|
|
return(p-q);
|
|
}
|
|
|
|
@@ -1333,11 +1347,12 @@ STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL
|
|
SSL_CIPHER *c;
|
|
STACK_OF(SSL_CIPHER) *sk;
|
|
int i,n;
|
|
+
|
|
if (s->s3)
|
|
s->s3->send_connection_binding = 0;
|
|
|
|
n=ssl_put_cipher_by_char(s,NULL,NULL);
|
|
- if ((num%n) != 0)
|
|
+ if (n == 0 || (num%n) != 0)
|
|
{
|
|
SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
|
|
return(NULL);
|
|
@@ -1352,7 +1367,7 @@ STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL
|
|
|
|
for (i=0; i<num; i+=n)
|
|
{
|
|
- /* Check for SCSV */
|
|
+ /* Check for TLS_EMPTY_RENEGOTIATION_INFO_SCSV */
|
|
if (s->s3 && (n != 3 || !p[0]) &&
|
|
(p[n-2] == ((SSL3_CK_SCSV >> 8) & 0xff)) &&
|
|
(p[n-1] == (SSL3_CK_SCSV & 0xff)))
|
|
@@ -1372,6 +1387,23 @@ STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL
|
|
continue;
|
|
}
|
|
|
|
+ /* Check for TLS_FALLBACK_SCSV */
|
|
+ if ((n != 3 || !p[0]) &&
|
|
+ (p[n-2] == ((SSL3_CK_FALLBACK_SCSV >> 8) & 0xff)) &&
|
|
+ (p[n-1] == (SSL3_CK_FALLBACK_SCSV & 0xff)))
|
|
+ {
|
|
+ /* The SCSV indicates that the client previously tried a higher version.
|
|
+ * Fail if the current version is an unexpected downgrade. */
|
|
+ if (!SSL_ctrl(s, SSL_CTRL_CHECK_PROTO_VERSION, 0, NULL))
|
|
+ {
|
|
+ SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_INAPPROPRIATE_FALLBACK);
|
|
+ if (s->s3)
|
|
+ ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_INAPPROPRIATE_FALLBACK);
|
|
+ goto err;
|
|
+ }
|
|
+ continue;
|
|
+ }
|
|
+
|
|
c=ssl_get_cipher_by_char(s,p);
|
|
p+=n;
|
|
if (c != NULL)
|
|
Index: crypto/openssl/ssl/t1_enc.c
|
|
===================================================================
|
|
--- crypto/openssl/ssl/t1_enc.c (revision 273303)
|
|
+++ crypto/openssl/ssl/t1_enc.c (working copy)
|
|
@@ -855,6 +855,7 @@ int tls1_alert_code(int code)
|
|
case SSL_AD_BAD_CERTIFICATE_STATUS_RESPONSE: return(TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE);
|
|
case SSL_AD_BAD_CERTIFICATE_HASH_VALUE: return(TLS1_AD_BAD_CERTIFICATE_HASH_VALUE);
|
|
case SSL_AD_UNKNOWN_PSK_IDENTITY:return(TLS1_AD_UNKNOWN_PSK_IDENTITY);
|
|
+ case SSL_AD_INAPPROPRIATE_FALLBACK:return(TLS1_AD_INAPPROPRIATE_FALLBACK);
|
|
#ifdef DTLS1_AD_MISSING_HANDSHAKE_MESSAGE
|
|
case DTLS1_AD_MISSING_HANDSHAKE_MESSAGE: return
|
|
(DTLS1_AD_MISSING_HANDSHAKE_MESSAGE);
|
|
@@ -862,4 +863,3 @@ int tls1_alert_code(int code)
|
|
default: return(-1);
|
|
}
|
|
}
|
|
-
|
|
Index: crypto/openssl/ssl/t1_lib.c
|
|
===================================================================
|
|
--- crypto/openssl/ssl/t1_lib.c (revision 273303)
|
|
+++ crypto/openssl/ssl/t1_lib.c (working copy)
|
|
@@ -1101,7 +1101,10 @@ static int tls_decrypt_ticket(SSL *s, const unsign
|
|
HMAC_Final(&hctx, tick_hmac, NULL);
|
|
HMAC_CTX_cleanup(&hctx);
|
|
if (CRYPTO_memcmp(tick_hmac, etick + eticklen, mlen))
|
|
+ {
|
|
+ EVP_CIPHER_CTX_cleanup(&ctx);
|
|
goto tickerr;
|
|
+ }
|
|
/* Attempt to decrypt session data */
|
|
/* Move p after IV to start of encrypted ticket, update length */
|
|
p = etick + 16 + EVP_CIPHER_CTX_iv_length(&ctx);
|
|
Index: crypto/openssl/ssl/tls1.h
|
|
===================================================================
|
|
--- crypto/openssl/ssl/tls1.h (revision 273303)
|
|
+++ crypto/openssl/ssl/tls1.h (working copy)
|
|
@@ -80,17 +80,24 @@ extern "C" {
|
|
|
|
#define TLS1_ALLOW_EXPERIMENTAL_CIPHERSUITES 0
|
|
|
|
+#define TLS1_VERSION 0x0301
|
|
+#define TLS1_1_VERSION 0x0302
|
|
#define TLS1_2_VERSION 0x0303
|
|
-#define TLS1_2_VERSION_MAJOR 0x03
|
|
-#define TLS1_2_VERSION_MINOR 0x03
|
|
+/* TLS 1.1 and 1.2 are not supported by this version of OpenSSL, so
|
|
+ * TLS_MAX_VERSION indicates TLS 1.0 regardless of the above
|
|
+ * definitions. (s23_clnt.c and s23_srvr.c have an OPENSSL_assert()
|
|
+ * check that would catch the error if TLS_MAX_VERSION was too low.)
|
|
+ */
|
|
+#define TLS_MAX_VERSION TLS1_VERSION
|
|
|
|
-#define TLS1_1_VERSION 0x0302
|
|
+#define TLS1_VERSION_MAJOR 0x03
|
|
+#define TLS1_VERSION_MINOR 0x01
|
|
+
|
|
#define TLS1_1_VERSION_MAJOR 0x03
|
|
#define TLS1_1_VERSION_MINOR 0x02
|
|
|
|
-#define TLS1_VERSION 0x0301
|
|
-#define TLS1_VERSION_MAJOR 0x03
|
|
-#define TLS1_VERSION_MINOR 0x01
|
|
+#define TLS1_2_VERSION_MAJOR 0x03
|
|
+#define TLS1_2_VERSION_MINOR 0x03
|
|
|
|
#define TLS1_get_version(s) \
|
|
((s->version >> 8) == TLS1_VERSION_MAJOR ? s->version : 0)
|
|
@@ -108,6 +115,7 @@ extern "C" {
|
|
#define TLS1_AD_PROTOCOL_VERSION 70 /* fatal */
|
|
#define TLS1_AD_INSUFFICIENT_SECURITY 71 /* fatal */
|
|
#define TLS1_AD_INTERNAL_ERROR 80 /* fatal */
|
|
+#define TLS1_AD_INAPPROPRIATE_FALLBACK 86 /* fatal */
|
|
#define TLS1_AD_USER_CANCELLED 90
|
|
#define TLS1_AD_NO_RENEGOTIATION 100
|
|
/* codes 110-114 are from RFC3546 */
|
|
@@ -419,6 +427,3 @@ SSL_CTX_callback_ctrl(ssl,SSL_CTRL_SET_TLSEXT_TICK
|
|
}
|
|
#endif
|
|
#endif
|
|
-
|
|
-
|
|
-
|