Fix for CVE-2014-0224

[openssl.git] / ssl / ssl3.h

diff --git a/ssl/ssl3.h b/ssl/ssl3.h
index 162bc79e044b9a2570b3cbb0a8a2cde0e756a9ae..de5e559a59df3204bcf0140526996a4f95aa319c 100644 (file)
--- a/ssl/ssl3.h
+++ b/ssl/ssl3.h
@@ -123,11 +123,15 @@
 #include <openssl/buffer.h>
 #include <openssl/evp.h>
 #include <openssl/ssl.h>
+#include <openssl/pq_compat.h>
 
 #ifdef  __cplusplus
 extern "C" {
 #endif
 
+/* Signalling cipher suite value: from draft-ietf-tls-renegotiation-03.txt */
+#define SSL3_CK_SCSV                           0x030000FF
+
 #define SSL3_CK_RSA_NULL_MD5                   0x03000001
 #define SSL3_CK_RSA_NULL_SHA                   0x03000002
 #define SSL3_CK_RSA_RC4_40_MD5                         0x03000003
@@ -253,7 +257,11 @@ extern "C" {
 #endif
 
 #define SSL3_RT_MAX_PLAIN_LENGTH               16384
+#ifdef OPENSSL_NO_COMP
+#define SSL3_RT_MAX_COMPRESSED_LENGTH  SSL3_RT_MAX_PLAIN_LENGTH
+#else
 #define SSL3_RT_MAX_COMPRESSED_LENGTH  (1024+SSL3_RT_MAX_PLAIN_LENGTH)
+#endif
 #define SSL3_RT_MAX_ENCRYPTED_LENGTH   (1024+SSL3_RT_MAX_COMPRESSED_LENGTH)
 #define SSL3_RT_MAX_PACKET_SIZE                (SSL3_RT_MAX_ENCRYPTED_LENGTH+SSL3_RT_HEADER_LENGTH)
 #define SSL3_RT_MAX_DATA_SIZE                  (1024*1024)
@@ -295,7 +303,7 @@ typedef struct ssl3_record_st
 /*rw*/ unsigned char *input;   /* where the decode bytes are */
 /*r */ unsigned char *comp;    /* only used with decompression - malloc()ed */
 /*r */  unsigned long epoch;    /* epoch number, needed by DTLS1 */
-/*r */  BN_ULLONG seq_num; /* sequence number, needed by DTLS1 */
+/*r */  PQ_64BIT seq_num;       /* sequence number, needed by DTLS1 */
        } SSL3_RECORD;
 
 typedef struct ssl3_buffer_st
@@ -325,6 +333,18 @@ typedef struct ssl3_buffer_st
 #define SSL3_FLAGS_DELAY_CLIENT_FINISHED       0x0002
 #define SSL3_FLAGS_POP_BUFFER                  0x0004
 #define TLS1_FLAGS_TLS_PADDING_BUG             0x0008
+#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
+ * from restarting the handshake in a loop. It's reset on a
+ * renegotiation, so effectively limits the client to one restart
+ * per negotiation. This limits the possibility of a DDoS
+ * attack where the client handshakes in a loop using SGC to
+ * restart. Servers which permit renegotiation can still be
+ * effected, but we can't prevent that.
+ */
+#define SSL3_FLAGS_SGC_RESTART_DONE            0x0040
 
 typedef struct ssl3_state_st
        {
@@ -435,6 +455,21 @@ typedef struct ssl3_state_st
                int cert_request;
                } tmp;
 
+        /* Connection binding to prevent renegotiation attacks */
+        unsigned char previous_client_finished[EVP_MAX_MD_SIZE];
+        unsigned char previous_client_finished_len;
+        unsigned char previous_server_finished[EVP_MAX_MD_SIZE];
+        unsigned char previous_server_finished_len;
+        int send_connection_binding; /* TODOEKR */
+
+#ifndef OPENSSL_NO_TLSEXT
+#ifndef OPENSSL_NO_EC
+       /* This is set to true if we believe that this is a version of Safari
+        * running on OS X 10.6 or newer. We wish to know this because Safari
+        * on 10.8 .. 10.8.3 has broken ECDHE-ECDSA support. */
+       char is_probably_safari;
+#endif /* !OPENSSL_NO_EC */
+#endif /* !OPENSSL_NO_TLSEXT */
        } SSL3_STATE;
 
 
@@ -476,6 +511,10 @@ typedef struct ssl3_state_st
 #define SSL3_ST_CR_CHANGE_B            (0x1C1|SSL_ST_CONNECT)
 #define SSL3_ST_CR_FINISHED_A          (0x1D0|SSL_ST_CONNECT)
 #define SSL3_ST_CR_FINISHED_B          (0x1D1|SSL_ST_CONNECT)
+#define SSL3_ST_CR_SESSION_TICKET_A    (0x1E0|SSL_ST_CONNECT)
+#define SSL3_ST_CR_SESSION_TICKET_B    (0x1E1|SSL_ST_CONNECT)
+#define SSL3_ST_CR_CERT_STATUS_A       (0x1F0|SSL_ST_CONNECT)
+#define SSL3_ST_CR_CERT_STATUS_B       (0x1F1|SSL_ST_CONNECT)
 
 /* server */
 /* extra state */
@@ -517,10 +556,15 @@ typedef struct ssl3_state_st
 #define SSL3_ST_SW_CHANGE_B            (0x1D1|SSL_ST_ACCEPT)
 #define SSL3_ST_SW_FINISHED_A          (0x1E0|SSL_ST_ACCEPT)
 #define SSL3_ST_SW_FINISHED_B          (0x1E1|SSL_ST_ACCEPT)
+#define SSL3_ST_SW_SESSION_TICKET_A    (0x1F0|SSL_ST_ACCEPT)
+#define SSL3_ST_SW_SESSION_TICKET_B    (0x1F1|SSL_ST_ACCEPT)
+#define SSL3_ST_SW_CERT_STATUS_A       (0x200|SSL_ST_ACCEPT)
+#define SSL3_ST_SW_CERT_STATUS_B       (0x201|SSL_ST_ACCEPT)
 
 #define SSL3_MT_HELLO_REQUEST                  0
 #define SSL3_MT_CLIENT_HELLO                   1
 #define SSL3_MT_SERVER_HELLO                   2
+#define        SSL3_MT_NEWSESSION_TICKET               4
 #define SSL3_MT_CERTIFICATE                    11
 #define SSL3_MT_SERVER_KEY_EXCHANGE            12
 #define SSL3_MT_CERTIFICATE_REQUEST            13
@@ -528,6 +572,7 @@ typedef struct ssl3_state_st
 #define SSL3_MT_CERTIFICATE_VERIFY             15
 #define SSL3_MT_CLIENT_KEY_EXCHANGE            16
 #define SSL3_MT_FINISHED                       20
+#define SSL3_MT_CERTIFICATE_STATUS             22
 #define DTLS1_MT_HELLO_VERIFY_REQUEST    3