diff -up openssl-1.0.1e/ssl/ssl3.h.keying-mitm openssl-1.0.1e/ssl/ssl3.h --- openssl-1.0.1e/ssl/ssl3.h.keying-mitm 2014-06-02 19:48:04.518100562 +0200 +++ openssl-1.0.1e/ssl/ssl3.h 2014-06-02 19:48:04.642103429 +0200 @@ -388,6 +388,7 @@ typedef struct ssl3_buffer_st #define TLS1_FLAGS_TLS_PADDING_BUG 0x0008 #define TLS1_FLAGS_SKIP_CERT_VERIFY 0x0010 #define TLS1_FLAGS_KEEP_HANDSHAKE 0x0020 +#define SSL3_FLAGS_CCS_OK 0x0080 /* SSL3_FLAGS_SGC_RESTART_DONE is set when we * restart a handshake because of MS SGC and so prevents us diff -up openssl-1.0.1e/ssl/s3_clnt.c.keying-mitm openssl-1.0.1e/ssl/s3_clnt.c --- openssl-1.0.1e/ssl/s3_clnt.c.keying-mitm 2013-02-11 16:26:04.000000000 +0100 +++ openssl-1.0.1e/ssl/s3_clnt.c 2014-06-02 19:49:57.042701985 +0200 @@ -559,6 +559,7 @@ int ssl3_connect(SSL *s) case SSL3_ST_CR_FINISHED_A: case SSL3_ST_CR_FINISHED_B: + s->s3->flags |= SSL3_FLAGS_CCS_OK; ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A, SSL3_ST_CR_FINISHED_B); if (ret <= 0) goto end; @@ -916,6 +917,7 @@ int ssl3_get_server_hello(SSL *s) SSLerr(SSL_F_SSL3_GET_SERVER_HELLO,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT); goto f_err; } + s->s3->flags |= SSL3_FLAGS_CCS_OK; s->hit=1; } else /* a miss or crap from the other end */ diff -up openssl-1.0.1e/ssl/s3_pkt.c.keying-mitm openssl-1.0.1e/ssl/s3_pkt.c --- openssl-1.0.1e/ssl/s3_pkt.c.keying-mitm 2014-06-02 19:48:04.640103383 +0200 +++ openssl-1.0.1e/ssl/s3_pkt.c 2014-06-02 19:48:04.643103452 +0200 @@ -1298,6 +1298,15 @@ start: goto f_err; } + if (!(s->s3->flags & SSL3_FLAGS_CCS_OK)) + { + al=SSL_AD_UNEXPECTED_MESSAGE; + SSLerr(SSL_F_SSL3_READ_BYTES,SSL_R_CCS_RECEIVED_EARLY); + goto f_err; + } + + s->s3->flags &= ~SSL3_FLAGS_CCS_OK; + rr->length=0; if (s->msg_callback) @@ -1432,7 +1441,7 @@ int ssl3_do_change_cipher_spec(SSL *s) if (s->s3->tmp.key_block == NULL) { - if (s->session == NULL) + if (s->session == NULL || s->session->master_key_length == 0) { /* might happen if dtls1_read_bytes() calls this */ SSLerr(SSL_F_SSL3_DO_CHANGE_CIPHER_SPEC,SSL_R_CCS_RECEIVED_EARLY); diff -up openssl-1.0.1e/ssl/s3_srvr.c.keying-mitm openssl-1.0.1e/ssl/s3_srvr.c --- openssl-1.0.1e/ssl/s3_srvr.c.keying-mitm 2014-06-02 19:48:04.630103151 +0200 +++ openssl-1.0.1e/ssl/s3_srvr.c 2014-06-02 19:48:04.643103452 +0200 @@ -673,6 +673,7 @@ int ssl3_accept(SSL *s) case SSL3_ST_SR_CERT_VRFY_A: case SSL3_ST_SR_CERT_VRFY_B: + s->s3->flags |= SSL3_FLAGS_CCS_OK; /* we should decide if we expected this one */ ret=ssl3_get_cert_verify(s); if (ret <= 0) goto end; @@ -700,6 +701,7 @@ int ssl3_accept(SSL *s) case SSL3_ST_SR_FINISHED_A: case SSL3_ST_SR_FINISHED_B: + s->s3->flags |= SSL3_FLAGS_CCS_OK; ret=ssl3_get_finished(s,SSL3_ST_SR_FINISHED_A, SSL3_ST_SR_FINISHED_B); if (ret <= 0) goto end; @@ -770,7 +772,10 @@ int ssl3_accept(SSL *s) s->s3->tmp.next_state=SSL3_ST_SR_FINISHED_A; #else if (s->s3->next_proto_neg_seen) + { + s->s3->flags |= SSL3_FLAGS_CCS_OK; s->s3->tmp.next_state=SSL3_ST_SR_NEXT_PROTO_A; + } else s->s3->tmp.next_state=SSL3_ST_SR_FINISHED_A; #endif