1 files changed, 16 insertions, 7 deletions

diff --git a/src/lib/libssl/d1_both.c b/src/lib/libssl/d1_both.c
index 2180c6d4da..9f898d6997 100644
--- a/src/lib/libssl/d1_both.c
+++ b/src/lib/libssl/d1_both.c
@@ -158,7 +158,6 @@ static unsigned char bitmask_end_values[]   = {0xff, 0x01, 0x03, 0x07, 0x0f, 0x1
 /* XDTLS:  figure out the right values */
 static unsigned int g_probable_mtu[] = {1500 - 28, 512 - 28, 256 - 28};
 
-static unsigned int dtls1_min_mtu(void);
 static unsigned int dtls1_guess_mtu(unsigned int curr_mtu);
 static void dtls1_fix_message_header(SSL *s, unsigned long frag_off, 
         unsigned long frag_len);
@@ -264,11 +263,10 @@ int dtls1_do_write(SSL *s, int type)
                         return ret;
                 mtu = s->d1->mtu - (DTLS1_HM_HEADER_LENGTH + DTLS1_RT_HEADER_LENGTH);
                 }
-
-        OPENSSL_assert(mtu > 0);  /* should have something reasonable now */
-
 #endif
 
+        OPENSSL_assert(s->d1->mtu >= dtls1_min_mtu());  /* should have something reasonable now */
+
         if ( s->init_off == 0  && type == SSL3_RT_HANDSHAKE)
                 OPENSSL_assert(s->init_num == 
                         (int)s->d1->w_msg_hdr.msg_len + DTLS1_HM_HEADER_LENGTH);
@@ -795,7 +793,13 @@ dtls1_get_message_fragment(SSL *s, int st1, int stn, long max, int *ok)
                 *ok = 0;
                 return i;
                 }
-        OPENSSL_assert(i == DTLS1_HM_HEADER_LENGTH);
+        /* Handshake fails if message header is incomplete */
+        if (i != DTLS1_HM_HEADER_LENGTH)
+                {
+                al=SSL_AD_UNEXPECTED_MESSAGE;
+                SSLerr(SSL_F_DTLS1_GET_MESSAGE_FRAGMENT,SSL_R_UNEXPECTED_MESSAGE);
+                goto f_err;
+                }
 
         /* parse the message fragment header */
         dtls1_get_message_header(wire, &msg_hdr);
@@ -867,7 +871,12 @@ dtls1_get_message_fragment(SSL *s, int st1, int stn, long max, int *ok)
 
         /* XDTLS:  an incorrectly formatted fragment should cause the 
          * handshake to fail */
-        OPENSSL_assert(i == (int)frag_len);
+        if (i != (int)frag_len)
+                {
+                al=SSL3_AD_ILLEGAL_PARAMETER;
+                SSLerr(SSL_F_DTLS1_GET_MESSAGE_FRAGMENT,SSL3_AD_ILLEGAL_PARAMETER);
+                goto f_err;
+                }
 
         *ok = 1;
 
@@ -1367,7 +1376,7 @@ dtls1_write_message_header(SSL *s, unsigned char *p)
         return p;
         }
 
-static unsigned int 
+unsigned int 
 dtls1_min_mtu(void)
         {
         return (g_probable_mtu[(sizeof(g_probable_mtu) /