2009-11-12 12:39:10 +02:00
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http://rt.openssl.org/Ticket/Display.html?id=1931&user=guest&pass=guest
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2010-01-28 21:27:53 +02:00
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--- a/ssl/d1_both.c
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+++ b/ssl/d1_both.c
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2009-11-12 12:39:10 +02:00
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@@ -561,7 +561,16 @@ dtls1_process_out_of_seq_message(SSL *s,
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if ((msg_hdr->frag_off+frag_len) > msg_hdr->msg_len)
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goto err;
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- if (msg_hdr->seq <= s->d1->handshake_read_seq)
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+ /* Try to find item in queue, to prevent duplicate entries */
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+ pq_64bit_init(&seq64);
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+ pq_64bit_assign_word(&seq64, msg_hdr->seq);
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+ item = pqueue_find(s->d1->buffered_messages, seq64);
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+ pq_64bit_free(&seq64);
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+
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+ /* Discard the message if sequence number was already there, is
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+ * too far in the future or the fragment is already in the queue */
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+ if (msg_hdr->seq <= s->d1->handshake_read_seq ||
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+ msg_hdr->seq > s->d1->handshake_read_seq + 10 || item != NULL)
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{
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unsigned char devnull [256];
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