OPT_S_ONRESUMP, OPT_S_NOLEGACYCONN, OPT_S_STRICT, OPT_S_SIGALGS, \
OPT_S_CLIENTSIGALGS, OPT_S_CURVES, OPT_S_NAMEDCURVE, OPT_S_CIPHER, \
OPT_S_DEBUGBROKE, OPT_S_COMP, \
- OPT_S__LAST
+ OPT_S_NO_RENEGOTIATION, OPT_S__LAST
# define OPT_S_OPTIONS \
{"no_ssl3", OPT_S_NOSSL3, '-',"Just disable SSLv3" }, \
{"serverpref", OPT_S_SERVERPREF, '-', "Use server's cipher preferences"}, \
{"legacy_renegotiation", OPT_S_LEGACYRENEG, '-', \
"Enable use of legacy renegotiation (dangerous)"}, \
+ {"no_renegotiation", OPT_S_NO_RENEGOTIATION, '-', \
+ "Disable all renegotiation."}, \
{"legacy_server_connect", OPT_S_LEGACYCONN, '-', \
"Allow initial connection to servers that don't support RI"}, \
{"no_resumption_on_reneg", OPT_S_ONRESUMP, '-', \
case OPT_S_CURVES: \
case OPT_S_NAMEDCURVE: \
case OPT_S_CIPHER: \
+ case OPT_S_NO_RENEGOTIATION: \
case OPT_S_DEBUGBROKE
#define IS_NO_PROT_FLAG(o) \
BIO_printf(bio_s_out, "Reused session-id\n");
BIO_printf(bio_s_out, "Secure Renegotiation IS%s supported\n",
SSL_get_secure_renegotiation_support(con) ? "" : " NOT");
+ if ((SSL_get_options(con) & SSL_OP_NO_RENEGOTIATION))
+ BIO_printf(bio_s_out, "Renegotiation is DISABLED\n");
+
if (keymatexportlabel != NULL) {
BIO_printf(bio_s_out, "Keying material exporter:\n");
BIO_printf(bio_s_out, " Label: '%s'\n", keymatexportlabel);
the appropriate context. This option is only supported if certificate
operations are permitted.
+=item B<-no_renegotiation>
+
+Disables all attempts at renegotiation in TLSv1.2 and earlier, same as setting
+B<SSL_OP_NO_RENEGOTIATION>.
+
=item B<-min_protocol>, B<-max_protocol>
Sets the minimum and maximum supported protocol.
the appropriate context. This option is only supported if certificate
operations are permitted.
+=item B<NoRenegotiation>
+
+Disables all attempts at renegotiation in TLSv1.2 and earlier, same as setting
+B<SSL_OP_NO_RENEGOTIATION>.
+
=item B<SignatureAlgorithms>
This sets the supported signature algorithms for TLS v1.2. For clients this
If this option is set, Encrypt-then-MAC is disabled. Clients will not
propose, and servers will not accept the extension.
+=item SSL_OP_NO_RENEGOTIATION
+
+Disable all renegotiation in TLSv1.2 and earlier. Do not send HelloRequest
+messages, and ignore renegotiation requests via ClientHello.
+
=back
=head1 SECURE RENEGOTIATION
The attempt to always try to use secure renegotiation was added in
Openssl 0.9.8m.
+B<SSL_OP_NO_RENEGOTIATION> was added in OpenSSL 1.1.0h.
+
=head1 COPYRIGHT
Copyright 2001-2016 The OpenSSL Project Authors. All Rights Reserved.
SSL_OP_NO_TLSv1|SSL_OP_NO_TLSv1_1|SSL_OP_NO_TLSv1_2)
# define SSL_OP_NO_DTLS_MASK (SSL_OP_NO_DTLSv1|SSL_OP_NO_DTLSv1_2)
+/* Disallow all renegotiation */
+# define SSL_OP_NO_RENEGOTIATION 0x40000000U
+
/*
* Make server add server-hello extension from early version of cryptopro
* draft, when GOST ciphersuite is negotiated. Required for interoperability
# define SSL_F_SSL_PARSE_SERVERHELLO_USE_SRTP_EXT 311
# define SSL_F_SSL_PEEK 270
# define SSL_F_SSL_READ 223
+# define SSL_F_SSL_RENEGOTIATE 516
+# define SSL_F_SSL_RENEGOTIATE_ABBREVIATED 546
# define SSL_F_SSL_SCAN_CLIENTHELLO_TLSEXT 320
# define SSL_F_SSL_SCAN_SERVERHELLO_TLSEXT 321
# define SSL_F_SSL_SESSION_DUP 348
s->msg_callback_arg);
if (SSL_is_init_finished(s) &&
+ (s->options & SSL_OP_NO_RENEGOTIATION) == 0 &&
!(s->s3->flags & SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS) &&
!s->s3->renegotiate) {
s->d1->handshake_read_seq++;
}
}
}
+ } else {
+ SSL3_RECORD_set_length(rr, 0);
+ ssl3_send_alert(s, SSL3_AL_WARNING, SSL_AD_NO_RENEGOTIATION);
}
/*
* we either finished a handshake or ignored the request, now try
*/
if (s->server
&& SSL_is_init_finished(s)
- && !s->s3->send_connection_binding
&& s->rlayer.d->handshake_fragment_len >= DTLS1_HM_HEADER_LENGTH
&& s->rlayer.d->handshake_fragment[0] == SSL3_MT_CLIENT_HELLO
&& s->s3->previous_client_finished_len != 0
- && (s->options & SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION) == 0) {
+ && ((!s->s3->send_connection_binding
+ && (s->options
+ & SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION) == 0)
+ || (s->options & SSL_OP_NO_RENEGOTIATION) != 0)) {
s->rlayer.d->handshake_fragment_len = 0;
SSL3_RECORD_set_length(rr, 0);
ssl3_send_alert(s, SSL3_AL_WARNING, SSL_AD_NO_RENEGOTIATION);
s->msg_callback(0, s->version, SSL3_RT_HANDSHAKE,
s->rlayer.handshake_fragment, 4, s,
s->msg_callback_arg);
-
if (SSL_is_init_finished(s) &&
+ (s->options & SSL_OP_NO_RENEGOTIATION) == 0 &&
!(s->s3->flags & SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS) &&
!s->s3->renegotiate) {
ssl3_renegotiate(s);
SSL3_RECORD_set_read(rr);
}
} else {
- /* Does this ever happen? */
+ ssl3_send_alert(s, SSL3_AL_WARNING, SSL_AD_NO_RENEGOTIATION);
SSL3_RECORD_set_read(rr);
}
/*
*/
if (s->server
&& SSL_is_init_finished(s)
- && !s->s3->send_connection_binding
&& s->version > SSL3_VERSION
&& s->rlayer.handshake_fragment_len >= SSL3_HM_HEADER_LENGTH
&& s->rlayer.handshake_fragment[0] == SSL3_MT_CLIENT_HELLO
&& s->s3->previous_client_finished_len != 0
- && (s->options & SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION) == 0) {
+ && ((!s->s3->send_connection_binding
+ && (s->options
+ & SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION) == 0)
+ || (s->options & SSL_OP_NO_RENEGOTIATION) != 0)) {
SSL3_RECORD_set_length(rr, 0);
SSL3_RECORD_set_read(rr);
ssl3_send_alert(s, SSL3_AL_WARNING, SSL_AD_NO_RENEGOTIATION);
SSL_FLAG_TBL("UnsafeLegacyRenegotiation",
SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION),
SSL_FLAG_TBL_INV("EncryptThenMac", SSL_OP_NO_ENCRYPT_THEN_MAC),
+ SSL_FLAG_TBL("NoRenegotiation", SSL_OP_NO_RENEGOTIATION),
};
if (value == NULL)
return -3;
SSL_CONF_CMD_SWITCH("serverpref", SSL_CONF_FLAG_SERVER),
SSL_CONF_CMD_SWITCH("legacy_renegotiation", 0),
SSL_CONF_CMD_SWITCH("legacy_server_connect", SSL_CONF_FLAG_SERVER),
+ SSL_CONF_CMD_SWITCH("no_renegotiation", 0),
SSL_CONF_CMD_SWITCH("no_resumption_on_reneg", SSL_CONF_FLAG_SERVER),
SSL_CONF_CMD_SWITCH("no_legacy_server_connect", SSL_CONF_FLAG_SERVER),
SSL_CONF_CMD_SWITCH("strict", 0),
{SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION, 0},
/* legacy_server_connect */
{SSL_OP_LEGACY_SERVER_CONNECT, 0},
+ /* no_renegotiation */
+ {SSL_OP_NO_RENEGOTIATION, 0},
/* no_resumption_on_reneg */
{SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION, 0},
/* no_legacy_server_connect */
"ssl_parse_serverhello_use_srtp_ext"},
{ERR_FUNC(SSL_F_SSL_PEEK), "SSL_peek"},
{ERR_FUNC(SSL_F_SSL_READ), "SSL_read"},
+ {ERR_FUNC(SSL_F_SSL_RENEGOTIATE), "SSL_renegotiate"},
+ {ERR_FUNC(SSL_F_SSL_RENEGOTIATE_ABBREVIATED),
+ "SSL_renegotiate_abbreviated"},
{ERR_FUNC(SSL_F_SSL_SCAN_CLIENTHELLO_TLSEXT),
"ssl_scan_clienthello_tlsext"},
{ERR_FUNC(SSL_F_SSL_SCAN_SERVERHELLO_TLSEXT),
int SSL_renegotiate(SSL *s)
{
+ if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
+ SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_NO_RENEGOTIATION);
+ return 0;
+ }
+
if (s->renegotiate == 0)
s->renegotiate = 1;
int SSL_renegotiate_abbreviated(SSL *s)
{
+ if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
+ SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_NO_RENEGOTIATION);
+ return 0;
+ }
+
if (s->renegotiate == 0)
s->renegotiate = 1;
if (server) {
if (st->state != MSG_FLOW_RENEGOTIATE) {
s->ctx->stats.sess_accept++;
+ } else if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
+ /*
+ * Shouldn't happen? The record layer should have prevented this
+ */
+ SSLerr(SSL_F_STATE_MACHINE, ERR_R_INTERNAL_ERROR);
+ ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
+ ossl_statem_set_error(s);
+ goto end;
} else if (!s->s3->send_connection_binding &&
!(s->options &
SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION)) {
if (s->s3->send_connection_binding) {
int el;
+ /* Still add this even if SSL_OP_NO_RENEGOTIATION is set */
if (!ssl_add_serverhello_renegotiate_ext(s, 0, &el, 0)) {
SSLerr(SSL_F_SSL_ADD_SERVERHELLO_TLSEXT, ERR_R_INTERNAL_ERROR);
return NULL;
{
int ret;
- TEST_check(peer->status == PEER_RETRY);
+ if (peer->status != PEER_RETRY) {
+ peer->status = PEER_ERROR;
+ return;
+ }
+
ret = SSL_do_handshake(peer->ssl);
if (ret == 1) {
int ret;
char buf;
+ if (peer->status == PEER_SUCCESS) {
+ /*
+ * We are a client that succeeded this step previously, but the server
+ * wanted to retry. Probably there is a no_renegotiation warning alert
+ * waiting for us. Attempt to continue the handshake.
+ */
+ peer->status = PEER_RETRY;
+ do_handshake_step(peer);
+ return;
+ }
+
TEST_check(peer->status == PEER_RETRY);
TEST_check(test_ctx->handshake_mode == SSL_TEST_HANDSHAKE_RENEG_SERVER
|| test_ctx->handshake_mode == SSL_TEST_HANDSHAKE_RENEG_CLIENT);
break;
case PEER_RETRY:
- if (previous_status == PEER_RETRY) {
- /* Neither peer is done. */
- return HANDSHAKE_RETRY;
- } else {
- /*
- * Deadlock: second peer is waiting for more input while first
- * peer thinks they're done (no more input is coming).
- */
- return INTERNAL_ERROR;
- }
+ return HANDSHAKE_RETRY;
+
case PEER_ERROR:
switch (previous_status) {
case PEER_SUCCESS:
# Generated with generate_ssl_tests.pl
-num_tests = 10
+num_tests = 14
test-0 = 0-renegotiate-client-no-resume
test-1 = 1-renegotiate-client-resume
test-7 = 7-renegotiate-non-aead-to-aead
test-8 = 8-renegotiate-non-aead-to-non-aead
test-9 = 9-renegotiate-aead-to-aead
+test-10 = 10-no-renegotiation-server-by-client
+test-11 = 11-no-renegotiation-server-by-server
+test-12 = 12-no-renegotiation-client-by-server
+test-13 = 13-no-renegotiation-client-by-client
# ===========================================================
[0-renegotiate-client-no-resume]
RenegotiateCiphers = AES256-GCM-SHA384
+# ===========================================================
+
+[10-no-renegotiation-server-by-client]
+ssl_conf = 10-no-renegotiation-server-by-client-ssl
+
+[10-no-renegotiation-server-by-client-ssl]
+server = 10-no-renegotiation-server-by-client-server
+client = 10-no-renegotiation-server-by-client-client
+
+[10-no-renegotiation-server-by-client-server]
+Certificate = ${ENV::TEST_CERTS_DIR}/servercert.pem
+CipherString = DEFAULT
+MaxProtocol = TLSv1.2
+Options = NoRenegotiation
+PrivateKey = ${ENV::TEST_CERTS_DIR}/serverkey.pem
+
+[10-no-renegotiation-server-by-client-client]
+CipherString = DEFAULT
+VerifyCAFile = ${ENV::TEST_CERTS_DIR}/rootcert.pem
+VerifyMode = Peer
+
+[test-10]
+ExpectedResult = ClientFail
+HandshakeMode = RenegotiateClient
+Method = TLS
+ResumptionExpected = No
+
+
+# ===========================================================
+
+[11-no-renegotiation-server-by-server]
+ssl_conf = 11-no-renegotiation-server-by-server-ssl
+
+[11-no-renegotiation-server-by-server-ssl]
+server = 11-no-renegotiation-server-by-server-server
+client = 11-no-renegotiation-server-by-server-client
+
+[11-no-renegotiation-server-by-server-server]
+Certificate = ${ENV::TEST_CERTS_DIR}/servercert.pem
+CipherString = DEFAULT
+MaxProtocol = TLSv1.2
+Options = NoRenegotiation
+PrivateKey = ${ENV::TEST_CERTS_DIR}/serverkey.pem
+
+[11-no-renegotiation-server-by-server-client]
+CipherString = DEFAULT
+VerifyCAFile = ${ENV::TEST_CERTS_DIR}/rootcert.pem
+VerifyMode = Peer
+
+[test-11]
+ExpectedResult = ServerFail
+HandshakeMode = RenegotiateServer
+Method = TLS
+ResumptionExpected = No
+
+
+# ===========================================================
+
+[12-no-renegotiation-client-by-server]
+ssl_conf = 12-no-renegotiation-client-by-server-ssl
+
+[12-no-renegotiation-client-by-server-ssl]
+server = 12-no-renegotiation-client-by-server-server
+client = 12-no-renegotiation-client-by-server-client
+
+[12-no-renegotiation-client-by-server-server]
+Certificate = ${ENV::TEST_CERTS_DIR}/servercert.pem
+CipherString = DEFAULT
+MaxProtocol = TLSv1.2
+PrivateKey = ${ENV::TEST_CERTS_DIR}/serverkey.pem
+
+[12-no-renegotiation-client-by-server-client]
+CipherString = DEFAULT
+Options = NoRenegotiation
+VerifyCAFile = ${ENV::TEST_CERTS_DIR}/rootcert.pem
+VerifyMode = Peer
+
+[test-12]
+ExpectedResult = ServerFail
+HandshakeMode = RenegotiateServer
+Method = TLS
+ResumptionExpected = No
+
+
+# ===========================================================
+
+[13-no-renegotiation-client-by-client]
+ssl_conf = 13-no-renegotiation-client-by-client-ssl
+
+[13-no-renegotiation-client-by-client-ssl]
+server = 13-no-renegotiation-client-by-client-server
+client = 13-no-renegotiation-client-by-client-client
+
+[13-no-renegotiation-client-by-client-server]
+Certificate = ${ENV::TEST_CERTS_DIR}/servercert.pem
+CipherString = DEFAULT
+MaxProtocol = TLSv1.2
+PrivateKey = ${ENV::TEST_CERTS_DIR}/serverkey.pem
+
+[13-no-renegotiation-client-by-client-client]
+CipherString = DEFAULT
+Options = NoRenegotiation
+VerifyCAFile = ${ENV::TEST_CERTS_DIR}/rootcert.pem
+VerifyMode = Peer
+
+[test-13]
+ExpectedResult = ClientFail
+HandshakeMode = RenegotiateClient
+Method = TLS
+ResumptionExpected = No
+
+
"ResumptionExpected" => "No",
"ExpectedResult" => "Success"
}
+ },
+ {
+ name => "no-renegotiation-server-by-client",
+ server => {
+ "Options" => "NoRenegotiation",
+ "MaxProtocol" => "TLSv1.2"
+ },
+ client => { },
+ test => {
+ "Method" => "TLS",
+ "HandshakeMode" => "RenegotiateClient",
+ "ResumptionExpected" => "No",
+ "ExpectedResult" => "ClientFail"
+ }
+ },
+ {
+ name => "no-renegotiation-server-by-server",
+ server => {
+ "Options" => "NoRenegotiation",
+ "MaxProtocol" => "TLSv1.2"
+ },
+ client => { },
+ test => {
+ "Method" => "TLS",
+ "HandshakeMode" => "RenegotiateServer",
+ "ResumptionExpected" => "No",
+ "ExpectedResult" => "ServerFail"
+ }
+ },
+ {
+ name => "no-renegotiation-client-by-server",
+ server => {
+ "MaxProtocol" => "TLSv1.2"
+ },
+ client => {
+ "Options" => "NoRenegotiation",
+ },
+ test => {
+ "Method" => "TLS",
+ "HandshakeMode" => "RenegotiateServer",
+ "ResumptionExpected" => "No",
+ "ExpectedResult" => "ServerFail"
+ }
+ },
+ {
+ name => "no-renegotiation-client-by-client",
+ server => {
+ "MaxProtocol" => "TLSv1.2"
+ },
+ client => {
+ "Options" => "NoRenegotiation",
+ },
+ test => {
+ "Method" => "TLS",
+ "HandshakeMode" => "RenegotiateClient",
+ "ResumptionExpected" => "No",
+ "ExpectedResult" => "ClientFail"
+ }
}
);