diff options
Diffstat (limited to 'crypto/openssl/ssl/s3_srvr.c')
| -rw-r--r-- | crypto/openssl/ssl/s3_srvr.c | 91 |
1 files changed, 55 insertions, 36 deletions
diff --git a/crypto/openssl/ssl/s3_srvr.c b/crypto/openssl/ssl/s3_srvr.c index b2ba9ff..e696450 100644 --- a/crypto/openssl/ssl/s3_srvr.c +++ b/crypto/openssl/ssl/s3_srvr.c @@ -166,7 +166,6 @@ int ssl3_accept(SSL *s) BUF_MEM *buf; unsigned long l,Time=(unsigned long)time(NULL); void (*cb)(const SSL *ssl,int type,int val)=NULL; - long num1; int ret= -1; int new_state,state,skip=0; @@ -248,6 +247,18 @@ int ssl3_accept(SSL *s) s->state=SSL3_ST_SR_CLNT_HELLO_A; s->ctx->stats.sess_accept++; } + else if (!s->s3->send_connection_binding && + !(s->options & SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION)) + { + /* Server attempting to renegotiate with + * client that doesn't support secure + * renegotiation. + */ + SSLerr(SSL_F_SSL3_ACCEPT, SSL_R_UNSAFE_LEGACY_RENEGOTIATION_DISABLED); + ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE); + ret = -1; + goto end; + } else { /* s->state == SSL_ST_RENEGOTIATE, @@ -435,15 +446,24 @@ int ssl3_accept(SSL *s) break; case SSL3_ST_SW_FLUSH: - /* number of bytes to be flushed */ - num1=BIO_ctrl(s->wbio,BIO_CTRL_INFO,0,NULL); - if (num1 > 0) + + /* This code originally checked to see if + * any data was pending using BIO_CTRL_INFO + * and then flushed. This caused problems + * as documented in PR#1939. The proposed + * fix doesn't completely resolve this issue + * as buggy implementations of BIO_CTRL_PENDING + * still exist. So instead we just flush + * unconditionally. + */ + + s->rwstate=SSL_WRITING; + if (BIO_flush(s->wbio) <= 0) { - s->rwstate=SSL_WRITING; - num1=BIO_flush(s->wbio); - if (num1 <= 0) { ret= -1; goto end; } - s->rwstate=SSL_NOTHING; + ret= -1; + goto end; } + s->rwstate=SSL_NOTHING; s->state=s->s3->tmp.next_state; break; @@ -718,13 +738,6 @@ int ssl3_get_client_hello(SSL *s) #endif STACK_OF(SSL_CIPHER) *ciphers=NULL; - if (s->new_session) - { - al=SSL_AD_HANDSHAKE_FAILURE; - SSLerr(SSL_F_SSL3_GET_CLIENT_HELLO, ERR_R_INTERNAL_ERROR); - goto f_err; - } - /* We do this so that we will respond with our native type. * If we are TLSv1 and we get SSLv3, we will respond with TLSv1, * This down switching should be handled by a different method. @@ -765,6 +778,21 @@ int ssl3_get_client_hello(SSL *s) goto f_err; } + /* If we require cookies and this ClientHello doesn't + * contain one, just return since we do not want to + * allocate any memory yet. So check cookie length... + */ + if (SSL_get_options(s) & SSL_OP_COOKIE_EXCHANGE) + { + unsigned int session_length, cookie_length; + + session_length = *(p + SSL3_RANDOM_SIZE); + cookie_length = *(p + SSL3_RANDOM_SIZE + session_length + 1); + + if (cookie_length == 0) + return 1; + } + /* load the client random */ memcpy(s->s3->client_random,p,SSL3_RANDOM_SIZE); p+=SSL3_RANDOM_SIZE; @@ -804,23 +832,11 @@ int ssl3_get_client_hello(SSL *s) p+=j; - if (s->version == DTLS1_VERSION) + if (s->version == DTLS1_VERSION || s->version == DTLS1_BAD_VER) { /* cookie stuff */ cookie_len = *(p++); - if ( (SSL_get_options(s) & SSL_OP_COOKIE_EXCHANGE) && - s->d1->send_cookie == 0) - { - /* HelloVerifyMessage has already been sent */ - if ( cookie_len != s->d1->cookie_len) - { - al = SSL_AD_HANDSHAKE_FAILURE; - SSLerr(SSL_F_SSL3_GET_CLIENT_HELLO, SSL_R_COOKIE_MISMATCH); - goto f_err; - } - } - /* * The ClientHello may contain a cookie even if the * HelloVerify message has not been sent--make sure that it @@ -835,7 +851,7 @@ int ssl3_get_client_hello(SSL *s) } /* verify the cookie if appropriate option is set. */ - if ( (SSL_get_options(s) & SSL_OP_COOKIE_EXCHANGE) && + if ((SSL_get_options(s) & SSL_OP_COOKIE_EXCHANGE) && cookie_len > 0) { memcpy(s->d1->rcvd_cookie, p, cookie_len); @@ -860,6 +876,8 @@ int ssl3_get_client_hello(SSL *s) SSL_R_COOKIE_MISMATCH); goto f_err; } + + ret = 2; } p += cookie_len; @@ -959,7 +977,7 @@ int ssl3_get_client_hello(SSL *s) #ifndef OPENSSL_NO_TLSEXT /* TLS extensions*/ - if (s->version > SSL3_VERSION) + if (s->version >= SSL3_VERSION) { if (!ssl_parse_clienthello_tlsext(s,&p,d,n, &al)) { @@ -1094,7 +1112,7 @@ int ssl3_get_client_hello(SSL *s) * s->tmp.new_cipher - the new cipher to use. */ - ret=1; + if (ret < 0) ret=1; if (0) { f_err: @@ -2718,6 +2736,7 @@ int ssl3_send_newsession_ticket(SSL *s) unsigned int hlen; EVP_CIPHER_CTX ctx; HMAC_CTX hctx; + SSL_CTX *tctx = s->initial_ctx; unsigned char iv[EVP_MAX_IV_LENGTH]; unsigned char key_name[16]; @@ -2756,9 +2775,9 @@ int ssl3_send_newsession_ticket(SSL *s) * it does all the work otherwise use generated values * from parent ctx. */ - if (s->ctx->tlsext_ticket_key_cb) + if (tctx->tlsext_ticket_key_cb) { - if (s->ctx->tlsext_ticket_key_cb(s, key_name, iv, &ctx, + if (tctx->tlsext_ticket_key_cb(s, key_name, iv, &ctx, &hctx, 1) < 0) { OPENSSL_free(senc); @@ -2769,10 +2788,10 @@ int ssl3_send_newsession_ticket(SSL *s) { RAND_pseudo_bytes(iv, 16); EVP_EncryptInit_ex(&ctx, EVP_aes_128_cbc(), NULL, - s->ctx->tlsext_tick_aes_key, iv); - HMAC_Init_ex(&hctx, s->ctx->tlsext_tick_hmac_key, 16, + tctx->tlsext_tick_aes_key, iv); + HMAC_Init_ex(&hctx, tctx->tlsext_tick_hmac_key, 16, tlsext_tick_md(), NULL); - memcpy(key_name, s->ctx->tlsext_tick_key_name, 16); + memcpy(key_name, tctx->tlsext_tick_key_name, 16); } l2n(s->session->tlsext_tick_lifetime_hint, p); /* Skip ticket length for now */ |
