Previously, a truncated DTLS fragment in
|dtls1_process_out_of_seq_message| would cause *ok to be cleared, but
the return value would still be the number of bytes read. This would
cause |dtls1_get_message| not to consider it an error and it would
continue processing as normal until the calling function noticed that
*ok was zero.
I can't see an exploit here because |dtls1_get_message| uses
|s->init_num| as the length, which will always be zero from what I can
see.
Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Emilia Käsper <emilia@openssl.org>
The |pqueue_insert| function can fail if one attempts to insert a
duplicate sequence number. When handling a fragment of an out of
sequence message, |dtls1_process_out_of_seq_message| would not call
|dtls1_reassemble_fragment| if the fragment's length was zero. It would
then allocate a fresh fragment and attempt to insert it, but ignore the
return value, leaking the fragment.
This allows an attacker to exhaust the memory of a DTLS peer.
Fixes CVE-2014-3507
Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Emilia Käsper <emilia@openssl.org>
In |dtls1_reassemble_fragment|, the value of
|msg_hdr->frag_off+frag_len| was being checked against the maximum
handshake message size, but then |msg_len| bytes were allocated for the
fragment buffer. This means that so long as the fragment was within the
allowed size, the pending handshake message could consume 16MB + 2MB
(for the reassembly bitmap). Approx 10 outstanding handshake messages
are allowed, meaning that an attacker could consume ~180MB per DTLS
connection.
In the non-fragmented path (in |dtls1_process_out_of_seq_message|), no
check was applied.
Fixes CVE-2014-3506
Wholly based on patch by Adam Langley with one minor amendment.
Reviewed-by: Emilia Käsper <emilia@openssl.org>
The |item| variable, in both of these cases, may contain a pointer to a
|pitem| structure within |s->d1->buffered_messages|. It was being freed
in the error case while still being in |buffered_messages|. When the
error later caused the |SSL*| to be destroyed, the item would be double
freed.
Thanks to Wah-Teh Chang for spotting that the fix in 1632ef74 was
inconsistent with the other error paths (but correct).
Fixes CVE-2014-3505
Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Emilia Käsper <emilia@openssl.org>
statement of opinion rather than a fact.
Reviewed-by: Dr. Stephen Henson <steve@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit c8d133e4b6f1ed1b7ad3c1a6d2c62f460e26c050)
PR#3456
Reviewed-by: Stephen Henson <steve@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit d48e78f0cf22aaddb563f4bcfccf25b1a45ac8a4)
Use same logic when determining when to expect a client
certificate for both TLS and DTLS.
PR#3452
(cherry picked from commit c8d710dc5f83d69d802f941a4cc5895eb5fe3d65)
The options which emulate a web server don't make sense when doing DTLS.
Exit with an error if an attempt is made to use them.
PR#3453
(cherry picked from commit 58a2aaeade8bdecd0f9f0df41927f7cff3012547)
This is actually ok for this function, but initialised to zero anyway if
PURIFY defined.
This does have the impact of masking any *real* unitialised data reads in bn though.
Patch based on approach suggested by Rich Salz.
PR#3415
(cherry picked from commit 77747e2d9a5573b1dbc15e247ce18c03374c760c)
ERR_get_error(3) references the non-existent
ERR_get_last_error_line_data instead of the one that does exist,
ERR_peek_last_error_line_data.
PR#3283
(cherry picked from commit 5cc99c6cf5e908df6b00b04af7f08e99c0698c7b)
Gets rid of this;
defined(@array) is deprecated at ../util/mkerr.pl line 792.
(Maybe you should just omit the defined()?)
defined(@array) is deprecated at ../util/mkerr.pl line 800.
(Maybe you should just omit the defined()?)
Signed-off-by: Geoff Thorpe <geoff@openssl.org>
(cherry picked from commit 647f360e2e86818cee1f2d0429e071d14814e0b5)
If CSR verify fails in ca utility print out error messages.
Otherwise some errors give misleading output: for example
if the key size exceeds the library limit.
PR#2875
(cherry picked from commit a30bdb55d1361b9926eef8127debfc2e1bb8c484)
Document that the certificate passed to SSL_CTX_add_extra_chain_cert()
should not be freed by the application.
PR#3409
Add restrictions section present in other branches.
(cherry picked from commit 86cac6d3b25342ff17a2b6564f7592fd7c6829e8)
