diff options
Diffstat (limited to 'ssl')
| -rw-r--r-- | ssl/d1_both.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/ssl/d1_both.c b/ssl/d1_both.c index 15a201a25cf4..0c863179bc88 100644 --- a/ssl/d1_both.c +++ b/ssl/d1_both.c @@ -561,7 +561,16 @@ dtls1_process_out_of_seq_message(SSL *s, struct hm_header_st* msg_hdr, int *ok) if ((msg_hdr->frag_off+frag_len) > msg_hdr->msg_len) goto err; - if (msg_hdr->seq <= s->d1->handshake_read_seq) + /* Try to find item in queue, to prevent duplicate entries */ + pq_64bit_init(&seq64); + pq_64bit_assign_word(&seq64, msg_hdr->seq); + item = pqueue_find(s->d1->buffered_messages, seq64); + pq_64bit_free(&seq64); + + /* Discard the message if sequence number was already there, is + * too far in the future or the fragment is already in the queue */ + if (msg_hdr->seq <= s->d1->handshake_read_seq || + msg_hdr->seq > s->d1->handshake_read_seq + 10 || item != NULL) { unsigned char devnull [256]; |