Fix typo (reported by Matthias St. Pierre)

Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit 12a7715e3daed439e46cbed461d2a3d9dfd37c0f)

Backdated note in CHANGES about shared library names

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1767)
(cherry picked from commit 78ce90cb1adb95eae094481e01f7a7d408ec78b7)

Add some notes on shared library names on different platforms

This is overdue since the addition of the unified build system

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1767)
(cherry picked from commit 4fa3f08fee253020ea152e11ff1f6fdcab79424f)

x86_64 assembly pack: add Goldmont performance results.

Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit ace05265d2d599e350cf84ed60955b7f2b173bc9)

Efence is antiquated, remove all traces of using it

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1768)
(cherry picked from commit 4fab3e24d62c810bc9165920af1c67c6215c7418)

Correct installation test in appveyor

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1759)
(cherry picked from commit 92403e77ac57e7c5fe49d2d2f304839757293922)

Fix grammar error in SSL_CTX_set_min_proto_version

CLA: trivial
Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1762)

(cherry picked from commit 8b5fffc819332dc381a431cae1a269642f0adf38)

GH1546: Fix old names in cryptodev code.

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1584)
(cherry picked from commit a8a8a917c0c0d36162fdc0cbf84ab17282cef3e9)

Disable encrypt_then_mac negotiation for DTLS.

I use the word 'negotiation' advisedly. Because that's all we were doing.
We negotiated it, set the TLS1_FLAGS_ENCRYPT_THEN_MAC flag in our data
structure, and then utterly ignored it in both dtls_process_record()
and do_dtls1_write().

Turn it off for 1.1.0; we'll fix it for 1.1.1 and by the time that's
released, hopefully 1.1.0b will be ancient history.

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>

apps: remove some #ifndef clutter

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1643)
(cherry picked from commit b85bf6395251dc28457b95de586a2f0a5faae4af)

apps: instead of varying implementation, make setup_engine a function always

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1643)
(cherry picked from commit 907c6c86331243897b80f37895a14de1e7957541)

If an engine comes up explicitely, it must also come down explicitely

In apps/apps.c, one can set up an engine with setup_engine().
However, we freed the structural reference immediately, which means
that for engines that don't already have a structural reference
somewhere else (because it's a built in engine), we end up returning
an invalid reference.

Instead, the function release_engine() is added, and called at the end
of the routines that call setup_engine().

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1643)
(cherry picked from commit dd1abd4462e4e4fa84b8f8de2ec70375f9b0e191)

Fix broken link to ASYNC_get_wait_ctx and rewrap the paragraph

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1745)
(cherry picked from commit 50c3fc00cc3090d082669591c0923a8468f2d8f9)

Do not set load_crypto_strings_inited when OPENSSL_NO_ERR is defined

Only set the load_crypto_strings_inited to 1 when err_load_crypto_strings_int was called.

This solves the following issue:
- openssl is built with no-err
- load_crypto_strings_inited is set to 1 during the OPENSSL_init_crypto call
- During the cleanup: OPENSSL_cleanup, err_free_strings_int is called because load_crypto_strings_inited == 1
- err_free_strings_int calls do_err_strings_init because it has never been called
- Now do_err_strings_init calls OPENSSL_init_crypto
- But since we are in the cleanup (stopped == 1) this results in an error:
  CRYPTOerr(CRYPTO_F_OPENSSL_INIT_CRYPTO, ERR_R_INIT_FAIL);
- which then tries to initialize everything we are trying to clean up: ERR_get_state, ossl_init_thread_start, etc
Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1654)
(cherry picked from commit a1f2b0e6e07a53c0ae2c81cba319b90e54210cd6)

Add error checking, small nit on ouput

Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1632)
(cherry picked from commit 31dad404fd6854ec8dd697bcccfef1e8dba3faff)

Add missing .pod extension to EVP_PKEY_CTX_set_tls1_prf_md

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit efba60ca7ab72cae62baad2aaaf2da32d1093c38)

Fix embedded string handling.

Don't rely on embedded flag to free strings correctly: it wont be
set if there is a malloc failure during initialisation.

Thanks to Guido Vranken for reporting this issue.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1725)
(cherry picked from commit 6215f27a83c6b9089a217dd6deab1665e0ced516)

fix invalid use of incomplete type X509_STORE_CTX

CLA: trivial

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit ba6017a19346a169ca09bb67427ccf6fc56af0af)

Fix signatures of EVP_Digest{Sign,Verify}Update

These are implemented as macros delegating to `EVP_DigestUpdate`, which
takes a `size_t` as its third argument, not an `unsigned int`.

CLA: trivial

Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit 8bdce8d160e29b4e1b80fec31f618d85d8c2b7a8)

Ensure we handle len == 0 in ERR_err_string_n

If len == 0 in a call to ERR_error_string_n() then we can read beyond the
end of the buffer. Really applications should not be calling this function
with len == 0, but we shouldn't be letting it through either!

Thanks to Agostino Sarubbo for reporting this issue. Agostino's blog on
this issue is available here:
https://blogs.gentoo.org/ago/2016/10/14/openssl-libcrypto-stack-based-buffer-overflow-in-err_error_string_n-err-c/

Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit e5c1361580d8de79682958b04a5f0d262e680f8b)

Engine afalg: properly set operation type also on big endian.

Copy the whole ALG_OP_TYPE to CMSG_DATA.

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit 574cffd5d5b8f57f811c8d36d930205041deedee)

Fix typo

I think the second "VC-WIN32" should be "VC-WIN64".
Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
CLA: trivial

Configure: remove superfluous 0x

The number is taken from the OPENSSL_VERSION_NUMBER which is already
in the hex form.

CLA: trivial

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1706)

(cherry picked from commit 35a498e431f81f94c4ee2dd451cdfe4d566fef3b)

Add memory leak detection to d2i_test

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1707)
(cherry picked from commit 4a4c4bf06d6362f56507c787c61b07655563e962)

Fix copy-paste test labels

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit 32804b04b8f3c889beebb6e63e14cc3ea4d8273c)

Remove blank line.

Reviewed-by: Richard Levitte <levitte@openssl.org>

Fix no-ocsp.

Reviewed-by: Richard Levitte <levitte@openssl.org>

Remove automatic RPATH - Add a CHANGES entry

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 38be1ea85515a34b3f7285134bdfc1f88082331b)

Remove automatic RPATH - adapt shlib_wrap.sh

Looking for something starting with '-Wl,-rpath,' isn't good enough,
as someone might give something like '-Wl,--enable-new-dtags,-rpath,/PATH'.
Looking for ',-rpath,' should be safe enough.

We could remove the preloading stuff entirely, but just in case the
user has chosen to given RPATH setting arguments at configuration,
we'd better make sure testing will still work.  Fair warning, there
are some configuration options that do not work with preloaded OpenSSL
libraries, such as the sanity checking ones.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 71d8ff1a8998da20db5ab8d4024c3d155b2f6733)

Remove automatic RPATH - add user rpath support

Make Configure recognise -rpath and -R to support user added rpaths
for OSF1 and Solaris.  For convenience, add a variable LIBRPATH in the
Unix Makefile, which the users can use as follows:

    ./config [options] -Wl,-rpath,\$(LIBRPATH)

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit fad599f7f147ee71e5581211fb654c2c8c491cd8)

Remove automatic RPATH

Before OpenSSL 1.1.0, binaries were installed in a non-standard
location by default, and runpath directories were therefore added in
those binaries, to make sure the executables would be able to find the
shared libraries they were linked with.

With OpenSSL 1.1.0 and on, binaries are installed in standard
directories by default, and the addition of runpath directories is
therefore not needed any more.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 075f7e2c6062a33352f570eeafe3c95e41419521)

RT is put out to pasture

Reviewed-by: Tim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1702)
(cherry picked from commit 7954dced19a7e59e7055eab95a981fa943c7d100)

Fix X509_NAME decode for malloc failures.

The original X509_NAME decode free code was buggy: this
could result in double free or leaks if a malloc failure
occurred.

Simplify and fix the logic.

Thanks to Guido Vranken for reporting this issue.

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1691)
(cherry picked from commit 6dcba070a94b1ead92f3e327cf207a0b7db6596f)

Remove untrue comment.

Reviewed-by: Richard Levitte <levitte@openssl.org>

Make dependencies if Makefile is new.

Reviewed-by: Richard Levitte <levitte@openssl.org>

Don't use des when disabled.

Reviewed-by: Rich Salz <rsalz@openssl.org>

fix memory leak

Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit eb67172ae53da63a6ff5189dfde2af8f98309ce3)

SRP code tidy.

Tidy up srp_Calc_k and SRP_Calc_u by making them a special case of
srp_Calc_xy which performs SHA1(PAD(x) | PAD(y)).

This addresses an OCAP Audit issue.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 8f332ac962b377a52016927e6db7a15367cb839c)

Add SRP test vectors from RFC5054

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 198d805900b183943a1ced0f5a230d55c8493a04)

Fix missing NULL checks in NewSessionTicket construction

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 83ae4661315d3d0ad52ddaa8fa5c8f1055c6c6f6)

Restore '-keyform engine' support for s_client

This used to work in 1.0.2 but disappeared when the argument parsing was
revamped.

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1639)

(cherry picked from commit a6972f346248fbc37e42056bb943fae0896a2967)

Fix an Uninit read in DTLS

If we have a handshake fragment waiting then dtls1_read_bytes() was not
correctly setting the value of recvd_type, leading to an uninit read.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 2f2d6e3e3ccd1ae7bba9f1af62f97dfca986e083)

Fix no-dtls

The new large message test in sslapitest needs OPENSSL_NO_DTLS guards

Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit 55386bef807c7edd0f1db036c0ed464b28a61d68)

apps/apps.c: initialize and de-initialize engine around key loading

Before loading a key from an engine, it may need to be initialized.
When done loading the key, we must de-initialize the engine.
(if the engine is already initialized somehow, only the reference
counter will be incremented then decremented)

Reviewed-by: Stephen Henson <steve@openssl.org>
(cherry picked from commit 49e476a5382602d0bad1139d6f1f66ddbc7959d6)

Add DTLS renegotiation tests

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit f9b1b6644a3a8fc6d617625ad979ee61cb67d381)

Extend the renegotiation tests

Add the ability to test both server initiated and client initiated reneg.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit fe7dd5534176d1b04be046fcbaad24430c8727e0)

Update README.ssltest.md

Add update for testing renegotiation. Also change info on CTLOG_FILE
environment variable - which always seems to be required.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 1329b952a675c3c445b73b34bf9f09483fbc759c)

Add support for testing renegotiation

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit e42c4544c88046a01c53a81aeb9d48685d708cf9)

Add a basic test for BN_bn2dec.

This would have caught 099e2968ed3c7d256cda048995626664082b1b30. This is
a port of the test added in
https://boringssl.googlesource.com/boringssl/+/7c040756178e14a4d181b6d93abb3827c93189c4

Reviewed-by: Emilia Käsper <emilia@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1496)
(cherry picked from commit 8ff70f3326983360c6f6306a1cd2238ef92d1f26)

Add missing parameter.

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit 243ecf19ddc0dc2366de1be5c404d66d483b196d)

Switch back to assuming TLS 1.2.

The TLSProxy::Record->new call hard-codes a version, like
70-test_sslrecords.t.

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit f3ea8d77080580979be086d97879ebc8b72f970a)

Address review comments.

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit 3058b742664287a30be77488c2ce3d8103bffd64)

Don't test quite so many of them.

Avoid making the CI blow up.

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit 5cf6d7c51f16fd78de7921dc441e24897c8b3cc6)

Test CBC mode padding.

This is a regression test for
https://github.com/openssl/openssl/pull/1431. It tests a
maximally-padded record with each possible invalid offset.

This required fixing a bug in Message.pm where the client sending a
fatal alert followed by close_notify was still treated as success.

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit 8523288e6d667f052bda092e01ab17986782fede)

Fix some mem leaks in sslapitest

A mem leak could occur on an error path. Also the mempacket BIO_METHOD
needs to be cleaned up, because of the newly added DTLS test.

Also fixed a double semi-colon in ssltestlib.c

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit fa454945cf2855fed452ff9bdb1876096bc07beb)

Prepare for 1.1.0c-dev

Reviewed-by: Richard Levitte <levitte@openssl.org>

Prepare for 1.1.0b release

Reviewed-by: Richard Levitte <levitte@openssl.org>

Updates CHANGES and NEWS for new release

Reviewed-by: Richard Levitte <levitte@openssl.org>

Add to fuzz corpora for CVE-2016-6309

Reviewed-by: Emilia Käsper <emilia@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit 44f206aa9dfd4f226f17d9093732dbece5300aa6)

Fix Use After Free for large message sizes

The buffer to receive messages is initialised to 16k. If a message is
received that is larger than that then the buffer is "realloc'd". This can
cause the location of the underlying buffer to change. Anything that is
referring to the old location will be referring to free'd data. In the
recent commit c1ef7c97 (master) and 4b390b6c (1.1.0) the point in the code
where the message buffer is grown was changed. However s->init_msg was not
updated to point at the new location.

CVE-2016-6309

Reviewed-by: Emilia Käsper <emilia@openssl.org>
(cherry picked from commit 0d698f6696e114a6e47f8b75ff88ec81f9e30175)

Add a test for large messages

Ensure that we send a large message during the test suite.

Reviewed-by: Emilia Käsper <emilia@openssl.org>
(cherry picked from commit 84d5549e692e63a16fa1b11603e4098fc31746e9)

Prepare for 1.1.0b-dev

Reviewed-by: Richard Levitte <levitte@openssl.org>

Prepare for 1.1.0a release

Reviewed-by: Richard Levitte <levitte@openssl.org>

Updates CHANGES and NEWS for new release

Reviewed-by: Richard Levitte <levitte@openssl.org>

Avoid KCI attack for GOST

Russian GOST ciphersuites are vulnerable to the KCI attack because they use
long-term keys to establish the connection when ssl client authorization is
on. This change brings the GOST implementation into line with the latest
specs in order to avoid the attack. It should not break backwards
compatibility.

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>

Fix a hang with SSL_peek()

If while calling SSL_peek() we read an empty record then we go into an
infinite loop, continually trying to read data from the empty record and
never making any progress. This could be exploited by a malicious peer in
a Denial Of Service attack.

CVE-2016-6305

GitHub Issue #1563

Reviewed-by: Rich Salz <rsalz@openssl.org>

Fix a mem leak in NPN handling

If a server sent multiple NPN extensions in a single ClientHello then a
mem leak can occur. This will only happen where the client has requested
NPN in the first place. It does not occur during renegotiation. Therefore
the maximum that could be leaked in a single connection with a malicious
server is 64k (the maximum size of the ServerHello extensions section). As
this is client side, only occurs if NPN has been requested and does not
occur during renegotiation this is unlikely to be exploitable.

Issue reported by Shi Lei.

Reviewed-by: Rich Salz <rsalz@openssl.org>

Add some more OCSP testing

Test that the OCSP callbacks work as expected.

Reviewed-by: Rich Salz <rsalz@openssl.org>

Add OCSP_RESPID_match()

Add a function for testing whether a given OCSP_RESPID matches with a
certificate.

Reviewed-by: Rich Salz <rsalz@openssl.org>

Add the ability to set OCSP_RESPID fields

OCSP_RESPID was made opaque in 1.1.0, but no accessors were provided for
setting the name/key value for the OCSP_RESPID.

Reviewed-by: Rich Salz <rsalz@openssl.org>

Fix OCSP Status Request extension unbounded memory growth

A malicious client can send an excessively large OCSP Status Request
extension. If that client continually requests renegotiation,
sending a large OCSP Status Request extension each time, then there will
be unbounded memory growth on the server. This will eventually lead to a
Denial Of Service attack through memory exhaustion. Servers with a
default configuration are vulnerable even if they do not support OCSP.
Builds using the "no-ocsp" build time option are not affected.

I have also checked other extensions to see if they suffer from a similar
problem but I could not find any other issues.

CVE-2016-6304

Issue reported by Shi Lei.

Reviewed-by: Rich Salz <rsalz@openssl.org>

Fix error message typo, wrong function code

Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit a449b47c7d8e20efc8cc524ed695a060b11ef889)

test/x509aux.c: Fix argv loop

There are cases when argc is more trustable than proper argv termination.
Since we trust argc in all other test programs, we might as well treat it
the same way in this program.

Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit 780bbb96bf514f0b4013e9c5725614ba5153c497)

CHANGES: mention removal of solaris-x86-cc.

Reviewed-by: Rich Salz <rsalz@openssl.org>

Excessive allocation of memory in dtls1_preprocess_fragment()

This issue is very similar to CVE-2016-6307 described in the previous
commit. The underlying defect is different but the security analysis and
impacts are the same except that it impacts DTLS.

A DTLS message includes 3 bytes for its length in the header for the
message.
This would allow for messages up to 16Mb in length. Messages of this length
are excessive and OpenSSL includes a check to ensure that a peer is sending
reasonably sized messages in order to avoid too much memory being consumed
to service a connection. A flaw in the logic of version 1.1.0 means that
memory for the message is allocated too early, prior to the excessive
message length check. Due to way memory is allocated in OpenSSL this could
mean an attacker could force up to 21Mb to be allocated to service a
connection. This could lead to a Denial of Service through memory
exhaustion. However, the excessive message length check still takes place,
and this would cause the connection to immediately fail. Assuming that the
application calls SSL_free() on the failed conneciton in a timely manner
then the 21Mb of allocated memory will then be immediately freed again.
Therefore the excessive memory allocation will be transitory in nature.
This then means that there is only a security impact if:

1) The application does not call SSL_free() in a timely manner in the
event that the connection fails
or
2) The application is working in a constrained environment where there
is very little free memory
or
3) The attacker initiates multiple connection attempts such that there
are multiple connections in a state where memory has been allocated for
the connection; SSL_free() has not yet been called; and there is
insufficient memory to service the multiple requests.

Except in the instance of (1) above any Denial Of Service is likely to
be transitory because as soon as the connection fails the memory is
subsequently freed again in the SSL_free() call. However there is an
increased risk during this period of application crashes due to the lack
of memory - which would then mean a more serious Denial of Service.

This issue does not affect TLS users.

Issue was reported by Shi Lei (Gear Team, Qihoo 360 Inc.).

CVE-2016-6308

Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit 48c054fec3506417b2598837b8062aae7114c200)

Excessive allocation of memory in tls_get_message_header()

A TLS message includes 3 bytes for its length in the header for the message.
This would allow for messages up to 16Mb in length. Messages of this length
are excessive and OpenSSL includes a check to ensure that a peer is sending
reasonably sized messages in order to avoid too much memory being consumed
to service a connection. A flaw in the logic of version 1.1.0 means that
memory for the message is allocated too early, prior to the excessive
message length check. Due to way memory is allocated in OpenSSL this could
mean an attacker could force up to 21Mb to be allocated to service a
connection. This could lead to a Denial of Service through memory
exhaustion. However, the excessive message length check still takes place,
and this would cause the connection to immediately fail. Assuming that the
application calls SSL_free() on the failed conneciton in a timely manner
then the 21Mb of allocated memory will then be immediately freed again.
Therefore the excessive memory allocation will be transitory in nature.
This then means that there is only a security impact if:

1) The application does not call SSL_free() in a timely manner in the
event that the connection fails
or
2) The application is working in a constrained environment where there
is very little free memory
or
3) The attacker initiates multiple connection attempts such that there
are multiple connections in a state where memory has been allocated for
the connection; SSL_free() has not yet been called; and there is
insufficient memory to service the multiple requests.

Except in the instance of (1) above any Denial Of Service is likely to
be transitory because as soon as the connection fails the memory is
subsequently freed again in the SSL_free() call. However there is an
increased risk during this period of application crashes due to the lack
of memory - which would then mean a more serious Denial of Service.

This issue does not affect DTLS users.

Issue was reported by Shi Lei (Gear Team, Qihoo 360 Inc.).

CVE-2016-6307

Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit c1ef7c971d0bbf117c3c80f65b5875e2e7b024b1)

Configure: clarify and refine -static.

Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit 047d97afd97520eae268f6d8a36fbf9a0239a994)

Don't leak on an OPENSSL_realloc() failure

If OPENSSL_sk_insert() calls OPENSSL_realloc() and it fails, it was leaking
the originally allocated memory.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 41bff723c6784cc846054a4fd4add6dbec8c2c64)

Don't allow too many consecutive warning alerts

Certain warning alerts are ignored if they are received. This can mean that
no progress will be made if one peer continually sends those warning alerts.
Implement a count so that we abort the connection if we receive too many.

Issue reported by Shi Lei.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit af58be768ebb690f78530f796e92b8ae5c9a4401)

rand/randfile.c: treat empty string in RAND_file_name as error.

Suggested in GH#1589.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 7dc0ad4d6dca81a003be7fa1fbd58a55f4be8646)

rand/randfile.c: rationalize __OpenBSD__ code path.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit ba8fa4e53a35a0c46d1e0e81a4d270a026fac2b9)

rand/randfile.c: restore fallback to $HOME for non-setuid programs.

Reported in GH#1589, but solution is different from suggested.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 799c1293fcf412db64dcc8a09a6b11cc755914dc)

Dcoument -alpn flag

Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit 776e15f9393a9e3083bec60a8da376ce2fe1e97e)

GH1555: Don't bump size on realloc failure

Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit 6fcace45bda108ad4d3f95261494dd479720d92c)

Use switch instead of multiple ifs

Makes the logic a little bit clearer.

Reviewed-by: Andy Polyakov <appro@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1571)
(cherry picked from commit 4f8a5f4da94bb70e06cf709beb1ddfa57a218c3d)

Fix a missing NULL check in dsa_builtin_paramgen

We should check the last BN_CTX_get() call to ensure that it isn't NULL
before we try and use any of the allocated BIGNUMs.

Issue reported by Shi Lei.

Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit 1ff7425d6130380bb00d3e64739633a4b21b11a3)

VMS: add [.util]shlib_wrap.exe and its build instructions

This is a program for VMS that corresponds to util/shlib_wrap.sh.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit f3ff481f318b10a223d6157bde9645e1797487c5)

descrip.mms.tmpl: in obj2bin, make sure an empty @deps means no empty lines

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 47852e6ae763a40ddc3538c76a02be06fd0595a5)

util/dofile.pl: report if a template couldn't be loaded

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit f6be8315cbdb4173008b5917d2b0fc80bb0bf06b)

RT3669: dgst can only sign/verify one file.

Check arg count and print an error message.

Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit 13a461831ab85ec9f55806ebf2df5ffb7f3f357a)

apps/apps.c: include sys/socket.h to declare recv()

Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit a19228b7f4fc6fcb49713455b3caedbc24fb0b01)

Documentation fixup; no more ECDHParameters

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 6e836806add140fa9e56d1226d7514fdfa2c803a)

Crude VMS build files for demos/bio/

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 8c88c88b5ad43bbdf1f6e7602b6ac56c9031b153)

Crude Makefile for demos/bio/

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit f4566dff06d2539dd01f54c817e2b952b64452e4)

Don't ignore Makefiles in demos/

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit ccf11f7ee49a0825caa407ed481c21b4b5933023)

Fixup BIO demos for OpenSSL 1.1.x

Call SSL_CTX_new() before doing any configuration.
(or call OPENSSL_ssl_init())

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 54d72ef0f019db383f8e98342b9b77c5da8541e5)

Fixup BIO demos for OpenSSL 1.1.x

'ECDHParameters = Automatic' isn't accepted.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 3656ea1c2217f38d44f3f34253e7c16f1b40ba77)

Fixup BIO demos for OpenSSL 1.1.x

Note: server-cmod doesn't seem to do things right...  from loading
cmod.cnf, it tries to load libssl_conf.so.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 16c6deed2c42d4cf4a7676a32b718d6a867f482a)

Remove an option related to a deprecated flag

CMS_NOOLDMIMETYPE and PKCS7_NOOLDMIMETYPE  are unused in pkcs7/cms code.

Reviewed-by: Andy Polyakov <appro@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1585)
(cherry picked from commit 28aef3d9558dc2e11ba56576b3a4d3faaef8a9d3)

Fix various missing option help messages ...

Reviewed-by: Andy Polyakov <appro@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1585)
(cherry picked from commit 12d56b2992ebd61e1b30c99ca1898dde42345cf7)