RT4545: Backport 2877 to 1.0.2

Sender verified that the fix works.  This is a backport/cherry-pick
of just the bugfix part of 0f91e1dff4ab2e7c25bbae5a48dfabbd1a4eae3c

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

Revert "RT4526: Call TerminateProcess, not ExitProcess"

This reverts commit 75f90688fb2dec0f897cad8be8b92be725c5016b.

TerminateProcess is asynchronous, so the code as written in the above
commit is not correct (and doesn't even compile at the moment). It is
also probably not needed in the speed case. Reverting in order to figure
out the correct solution.

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

RT4573: Synopsis for RAND_add is wrong

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

RT4526: Call TerminateProcess, not ExitProcess

Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit 9c1a9ccf65d0ea1912675d3a622fa8e51b524b9e)

Change (!seqtt) to (seqtt == NULL)

Reviewed-by: Stephen Henson <steve@openssl.org>
Reviewed-by: Emilia Käsper <emilia@openssl.org>
(cherry picked from commit fdcb499cc2cd57412e496302a4bca8c5d9f1a9c7)

Always check that the value returned by asn1_do_adb() is non-NULL

Reviewed-by: Stephen Henson <steve@openssl.org>
Reviewed-by: Emilia Käsper <emilia@openssl.org>
(cherry picked from commit bace847eae24f48adc6a967c6cce7f8d05bbeda3)

RT4546: Backport doc fix

Reviewed-by: Matt Caswell <matt@openssl.org>
Manual cherry-pick of 538860a3ce0b9fd142a7f1a62e597cccb74475d3.

Fix omitted selector handling.

The selector field could be omitted because it has a DEFAULT value.
In this case *sfld == NULL (sfld can never be NULL). This was not
noticed because this was never used in existing ASN.1 modules.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 7c46746bf2958fd2eccc59ecb48039e4e20ce38a)

crypto/sparccpuid.S: limit symbol visibility.

Couple of never-used symbols were clasing with FIPS module, "weakening"
them allows to resolve linking errors.

RT#3699

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

RT4562: Backport doc fix.

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

RT4560: Initialize variable to NULL

Reviewed-by: Andy Polyakov <appro@openssl.org>

Fix link error.

Use string_to_hex, OPENSSL_hexstr2buf() doesn't exist in OpenSSL 1.0.2

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

crypto/mem.c: drop reference to cleanse_ctr and fix no-asm builds.

crypto/mem_clr.c was harmonized with master branch and doesn't use
cleanse_ctr kludge anymore.

RT#4563

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

Don't skip leading zeroes in PSK keys.

Don't use BN_hex2bn() for PSK key conversion as the conversion to
BN and back removes leading zeroes, use OPENSSL_hexstr2buf() instead.

RT#4554

Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit 6ec6d5207187dbc1dbd971bd50ea17c9a94906d0)

Conflicts:
apps/s_client.c
apps/s_server.c

RT3053: Check for NULL before dereferencing

Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit 6b3602882e089aaca18828a72d9f4072e6a20252)

crypto/mem_clr.c: switch to OPENSSL_cleanse implementation from 

It's probably worth reminding that this is a fall-back implementation
for platforms that don't have assembly OPENSSL_cleanse.

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

hmac/hmac.c: switch to OPENSSL_cleanse.

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

Fix an error path leak in int X509_ATTRIBUTE_set1_data()

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 5000a6d1215ea7d6ed6179d0bcd44263f6e3c26b)

Fix an error path leak in do_ext_nconf()

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 8605abf13523579ecab8b1f2a4bcb8354d94af79)

Fix seg fault in TS_RESP_verify_response()

The TS_RESP_verify_response() function is used for verifying the response
from a TSA. You can set the provided TS_VERIFY_CTX with different flags
depending on what aspects of the response you wish to verify.

A seg fault will occur if you supply the TS_VFY_SIGNER or TS_VFY_TSA_NAME
flags without also specifying TS_VFY_SIGNATURE.

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

Add a BN_mod_word test()

The previous commit fixed a bug with BN_mod_word() which would have been
caught if we had a test for it. This commit adds one.

Reviewed-by: Andy Polyakov <appro@openssl.org>

Fix BN_mod_word bug

On systems where we do not have BN_ULLONG (e.g. typically 64 bit systems)
then BN_mod_word() can return incorrect results if the supplied modulus is
too big.

RT#4501

Reviewed-by: Andy Polyakov <appro@openssl.org>
(cherry picked from commit 37258dadaa9e36db4b96a3aa54aa6c67136160cc)

More fix DSA, preserve BN_FLG_CONSTTIME

The previous "fix" still left "k" exposed to constant time problems in
the later BN_mod_inverse() call. Ensure both k and kq have the
BN_FLG_CONSTTIME flag set at the earliest opportunity after creation.

CVE-2016-2178

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

Fix DSA, preserve BN_FLG_CONSTTIME

Operations in the DSA signing algorithm should run in constant time in
order to avoid side channel attacks. A flaw in the OpenSSL DSA
implementation means that a non-constant time codepath is followed for
certain operations. This has been demonstrated through a cache-timing
attack to be sufficient for an attacker to recover the private DSA key.

CVE-2016-2178

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

Fix documentation error in x509 app certopt flag

According to the x509 man page in the section discussing -certopt it says
that the ca_default option is the same as that used by the ca utility and
(amongst other things) has the effect of suppressing printing of the
signature - but in fact it doesn't. This error seems to have been present
since the documentation was written back in 2001. It never had this effect.

The default config file sets the certopt value to ca_default. The ca utility
takes that and THEN adds additional options to suppress printing of the
signature. So the ca utility DOES suppress printing of the signature - but
it is not as a result of using the ca_default option.

GitHub Issue #247

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 39a470088af6f833bd1a912908c44bf4a9f48b0c)

BIO_printf() can fail to print the last character

If the string to print is exactly 2048 character long (excluding the NULL
terminator) then BIO_printf will chop off the last byte. This is because
it has filled its static buffer but hasn't yet allocated a dynamic buffer.
In cases where we don't have a dynamic buffer we need to truncate but that
is not the case for BIO_printf(). We need to check whether we are able to
have a dynamic buffer buffer deciding to truncate.

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

cryptodev_asym, zapparams: use OPENSSL_* allocation routines, handle errors

zapparams modification based on tip from Matt Caswell

RT#3198

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

Fix build with no-cmac

Add missing ifdefs. Same change is already present in master, see
b4a3aeebd9f9280aa7e69a343f5c824e68466d90

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1155)

Update CONTRIBUTING

Fix typos and clarify a few things in the CONTRIBUTING file.

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

Avoid some undefined pointer arithmetic

A common idiom in the codebase is:

if (p + len > limit)
{
    return; /* Too long */
}

Where "p" points to some malloc'd data of SIZE bytes and
limit == p + SIZE

"len" here could be from some externally supplied data (e.g. from a TLS
message).

The rules of C pointer arithmetic are such that "p + len" is only well
defined where len <= SIZE. Therefore the above idiom is actually
undefined behaviour.

For example this could cause problems if some malloc implementation
provides an address for "p" such that "p + len" actually overflows for
values of len that are too big and therefore p + len < limit!

Issue reported by Guido Vranken.

CVE-2016-2177

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

Fix some missing inits

Backport of 8e89e85f556f549f05d3b49f5408a217ac5e3700
From PR #1019 / #997

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1019)

Parameter copy sanity checks.

Don't copy parameters is they're already present in the destination.
Return error if an attempt is made to copy different parameters to
destination. Update documentation.

If key type is not initialised return missing parameters

RT#4149

Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit f72f00d49549c6620d7101f5e9bf7963da6df9ee)

Check for malloc failure in EVP_PKEY_keygen()

After a call to EVP_PKEY_new() we should check for malloc failure.

RT#4180

Reviewed-by: Stephen Henson <steve@openssl.org>

The ssl3_digest_cached_records() function does not handle errors properly

The ssl3_digest_cached_records() function was failing to handle errors
that might be returned from EVP_DigestSignInit() and
EVP_DigestSignUpdate().

RT#4180

Reviewed-by: Stephen Henson <steve@openssl.org>

Fix a mem leak on an error path in OBJ_NAME_add()

If lh_OBJ_NAME_insert() fails then the allocated |onp| value is leaked.

RT#2238

Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit 0a618df059d93bf7fe9e3ec92e04db8bc1eeff07)

Fix error return value in SRP functions

The functions SRP_Calc_client_key() and SRP_Calc_server_key() were
incorrectly returning a valid pointer in the event of error.

Issue reported by Yuan Jochen Kang

Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit 308ff28673ae1a4a1b346761224b4a8851d41f58)

openssl verify: only display the command usage on usage errors

All other errors should only display the error message.

RT#1866

Reviewed-by: Viktor Dukhovni <viktor@openssl.org>

Revert "Document the esc_2254 command line name option"

This reverts commit 54fc5795c9f7d0dc95d537672c716c9d250eb0fb.

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

Revert "make update"

This reverts commit 7229a91a48d706804f790a392b3ad50bc358cdc4.

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

Revert "Make it possible to have RFC2254 escapes with ASN1_STRING_print_ex()"

This reverts commit 87728c682995d0575b52a5a19d69405bb764e76e.

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

rand/randfile.c: remove _XOPEN_SOURCE definition.

Defintions of macros similar to _XOPEN_SOURCE belong in command line
or in worst case prior first #include directive in source. As for
macros is was allegedly controlling. One can argue that we are
probably better off demanding S_IS* macros but there are systems
that just don't comply, hence this compromise solution...

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 2e6d7799ffc47604d06e0465afeb84b91aff8006)

Ensure verify error is set when X509_verify_cert() fails

Set ctx->error = X509_V_ERR_OUT_OF_MEM when verificaiton cannot
continue due to malloc failure.  Similarly for issuer lookup failures
and caller errors (bad parameters or invalid state).

Also, when X509_verify_cert() returns <= 0 make sure that the
verification status does not remain X509_V_OK, as a last resort set
it it to X509_V_ERR_UNSPECIFIED, just in case some code path returns
an error without setting an appropriate value of ctx->error.

Add new and some missing error codes to X509 error -> SSL alert switch.

Reviewed-by: Tim Hudson <tjh@openssl.org>

Clarify negative return from X509_verify_cert()

Reviewed-by: Tim Hudson <tjh@openssl.org>

Check that the obtained public key is valid

In the X509 app check that the obtained public key is valid before we
attempt to use it.

Issue reported by Yuan Jochen Kang.

Reviewed-by: Viktor Dukhovni <viktor@openssl.org>

Fix a double free in tls1_setup_key_block

If p2 == NULL then p1 can get freed twice and a crash could occur.

Issue reported by Shi Lei (Qihoo 360 Inc)

Reviewed-by: Viktor Dukhovni <viktor@openssl.org>

Fix SRP client key computation

Signed-off-by: Kurt Roeckx <kurt@roeckx.be>
Reviewed-by: Matt Caswell <matt@openssl.org>
GH: #1017
(cherry picked from commit c9141a43e246d527ec8b5a97b98e93fc31b0f0b8)

Cleanup openssl.ec

HMAC doesn't have any error codes

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

Fix util/mkerr.pl

- Adjust mkerr.pl to produce the line length we used for source
  reformating.

- Have mkerr.pl keep track of preprocessor directive indentation

  Among others, do not spuriously throw away a #endif at the end of
  header files.

- Make sure mkerr.pl specifies any header inclusion correctly

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

Run the refreshed scripts

Some output difference in crypto/conf/conf_def.h, because the earlier
source reformatting needlessly indented the macro values.

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

Refresh seldom used C generating scripts to current C standard

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

Avoid double declaration of COMP_METHOD
Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Kurt Roeckx <kurt@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1083)

Document the esc_2254 command line name option

RT#1466

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit a37458c1bf76c603cc27e8baf32ac2aa1cd7662e)

make update

RT#1466

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 0794b6a6a8a9a1dc1c7b0f9cfaf804253af29cdc)

Make it possible to have RFC2254 escapes with ASN1_STRING_print_ex()

Also adds 'esc_2254' to the possible command line name options

RT#1466

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit bc776510982b3768761d32c1160e79cb45a561c3)

Don't require any length of password when decrypting

RT#2534

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

Add missing initialiser in e_chil.c

RT#2616

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

Add support for RC / WINDRES env variables

RT#2558

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

Remove repeated condition from if in X509_NAME_oneline

An if checks the value of |type| to see if it is V_ASN1_VISIBLESTRING
twice. We only need to do it once.

GitHub Issue #656

Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit 2647e2617e31002cb0ab80758be4e566917d2888)

Fix SSL compression symbol exporting

Some compression related functions in libssl have dummy versions to be
used when compiled with no-comp. However those dummy functions were not
being exported on Windows so they are unusable when dynamically linked.

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

Documentation: Clarify sizes for UI_add_input_string()

The given sizes to not include the final NUL character.

RT#2622

Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit 727ee8cfeb2893d5aec4a6e571e9adf0667e9135)

Windows: Add CRYPT32.LIB to the libraries to link your app with

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1064)

RT3513: req doesn't display attributes using utf8string

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

Use RPMBUILD macros rather than hard coded paths in openssl.spec

RT#4522

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

Recommend GH over RT, per team vote.

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Manual cherry-pick of f2b9c257216a27b568b3d5d703ca5bdd926c5c28)

Adding missing BN_CTX_(start/end) in crypto/ec/ec_key.c

RT#4363

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Stephen Henson <steve@openssl.org>
(cherry picked from commit 2ab851b779a77d119e1677b2495b368a46d83eef)

Conflicts:
crypto/ec/ec_key.c

Add -signcert to CA.pl usage message.

RT#4256

Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit c1176ebf298ffa0bad0d368bd81aacbb30572a95)

Conflicts:
apps/CA.pl.in

Fix i2d_X509_AUX and update docs

When *pp is NULL, don't write garbage, return an unexpected pointer
or leak memory on error.

Reviewed-by: Dr. Stephen Henson <steve@openssl.org>

GH837: Avoid double-free in OCSP parse.

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Dr. Stephen Henson <steve@openssl.org>

Typo.

RT#4538

Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit 981b5bb8efca8a8adbf6a567e3a401c586a694cc)

Add NULL check in i2d_PrivateKey()

Originally submitted by Kurt Cancemi <kurt@x64architecture.com>

Closes RT#4533

Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit 59a56c4cf02bbf1efeda6c2a5893d5079db78ff3)

Don't send signature algorithms when client_version is below TLS 1.2.

Per RFC 5246,

    Note: this extension is not meaningful for TLS versions prior to 1.2.
    Clients MUST NOT offer it if they are offering prior versions.
    However, even if clients do offer it, the rules specified in [TLSEXT]
    require servers to ignore extensions they do not understand.

Although second sentence would suggest that there would be no interop
problems in always offering the extension, WebRTC has reported issues
with Bouncy Castle on < TLS 1.2 ClientHellos that still include
signature_algorithms. See also
https://bugs.chromium.org/p/webrtc/issues/detail?id=4223

RT#4390

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Stephen Henson <steve@openssl.org>
(cherry picked from commit f7aa318552c4ef62d902c480b59bd7c4513c0009)

Conflicts:
ssl/ssl_locl.h

Fix BIO_eof() for BIO pairs

BIO_eof() was always returning true when using a BIO pair. It should only
be true if the peer BIO is empty and has been shutdown.

RT#1215

Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit 3105d695358d86c0f2a404b2b74a1870b941ce5e)

Only call FIPS_update, FIPS_final in FIPS mode.

RT#3826

Reviewed-by: Tim Hudson <tjh@openssl.org>

Constify PKCS12_newpass()

PR#4449

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 049f5bbce3eebdf4ec2030042eb2ae64bb67aedb)
Conflicts:
doc/crypto/PKCS12_newpass.pod

Tidy up PKCS12_newpass() fix memory leaks.

PR#4466

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit d800d0f45b7618c30692c01d4dbf96042468b932)

Conflicts:
crypto/pkcs12/p12_npas.c

Only set CMS parameter when encrypting

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 708cf5ded249f871fcd5e3de27d9281b1f37ae71)

Use default ASN.1 for SEED.

The default ASN.1 handling can be used for SEED. This also makes
CMS work with SEED.

PR#4504

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit c0aa8c274843c5b8a70d70fc05d71fa3dfd510db)

Always try to set ASN.1 parameters for CMS.

Try to set the ASN.1 parameters for CMS encryption even if the IV
length is zero as the underlying cipher should still set the type.

This will correctly result in errors if an attempt is made to use
an unsupported cipher type.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 3fd60dc42288591737a35a90368d72dbd00fdef8)

Conflicts:
crypto/cms/cms_enc.c

Check return of PEM_write_* functions and report possible errors

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1025)
(cherry picked from commit c73aa309049c4f04ec81f0f1cf552eab8456a16e)

Fix name length limit check.

The name length limit check in x509_name_ex_d2i() includes
the containing structure as well as the actual X509_NAME. This will
cause large CRLs to be rejected.

Fix by limiting the length passed to ASN1_item_ex_d2i() which will
then return an error if the passed X509_NAME exceeds the length.

RT#4531

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 4e0d184ac1dde845ba9574872e2ae5c903c81dff)

Fix double free in d2i_PrivateKey().

RT#4527

Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit 3340e8bb186f689df5720352f65a9c0c42b6046b)

add documentation

Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit b1b3e14fbeb373a288ba20402600e071e6f402f8)

Prepare for 1.0.2i-dev

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

Prepare for 1.0.2h release

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

make update

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

Update CHANGES and NEWS for the new release

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

Fix ASN1_INTEGER handling.

Only treat an ASN1_ANY type as an integer if it has the V_ASN1_INTEGER
tag: V_ASN1_NEG_INTEGER is an internal only value which is never used
for on the wire encoding.

Thanks to David Benjamin <davidben@google.com> for reporting this bug.

This was found using libFuzzer.

RT#4364 (part)CVE-2016-2108.

Reviewed-by: Emilia Käsper <emilia@openssl.org>

Check that we have enough padding characters.

Reviewed-by: Emilia Käsper <emilia@openssl.org>
CVE-2016-2107

MR: #2572

Remove some documentation for functions not in 1.0.x

A few functions in the recently added EVP_EncodeInit docs don't apply to
the 1.0.x branches.

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

Add documentation for EVP_EncodeInit() and similar functions

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

Ensure EVP_EncodeUpdate handles an output length that is too long

With the EVP_EncodeUpdate function it is the caller's responsibility to
determine how big the output buffer should be. The function writes the
amount actually used to |*outl|. However this could go negative with a
sufficiently large value for |inl|. We add a check for this error
condition.

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

Avoid overflow in EVP_EncodeUpdate

An overflow can occur in the EVP_EncodeUpdate function which is used for
Base64 encoding of binary data. If an attacker is able to supply very large
amounts of input data then a length check can overflow resulting in a heap
corruption. Due to the very large amounts of data involved this will most
likely result in a crash.

Internally to OpenSSL the EVP_EncodeUpdate function is primarly used by the
PEM_write_bio* family of functions. These are mainly used within the
OpenSSL command line applications, so any application which processes
data from an untrusted source and outputs it as a PEM file should be
considered vulnerable to this issue.

User applications that call these APIs directly with large amounts of
untrusted data may also be vulnerable.

Issue reported by Guido Vranken.

CVE-2016-2105

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

Prevent EBCDIC overread for very long strings

ASN1 Strings that are over 1024 bytes can cause an overread in
applications using the X509_NAME_oneline() function on EBCDIC systems.
This could result in arbitrary stack data being returned in the buffer.

Issue reported by Guido Vranken.

CVE-2016-2176

Reviewed-by: Andy Polyakov <appro@openssl.org>

Fix encrypt overflow

An overflow can occur in the EVP_EncryptUpdate function. If an attacker is
able to supply very large amounts of input data after a previous call to
EVP_EncryptUpdate with a partial block then a length check can overflow
resulting in a heap corruption.

Following an analysis of all OpenSSL internal usage of the
EVP_EncryptUpdate function all usage is one of two forms.

The first form is like this:
EVP_EncryptInit()
EVP_EncryptUpdate()

i.e. where the EVP_EncryptUpdate() call is known to be the first called
function after an EVP_EncryptInit(), and therefore that specific call
must be safe.

The second form is where the length passed to EVP_EncryptUpdate() can be
seen from the code to be some small value and therefore there is no
possibility of an overflow.

Since all instances are one of these two forms, I believe that there can
be no overflows in internal code due to this problem.

It should be noted that EVP_DecryptUpdate() can call EVP_EncryptUpdate()
in certain code paths. Also EVP_CipherUpdate() is a synonym for
EVP_EncryptUpdate(). Therefore I have checked all instances of these
calls too, and came to the same conclusion, i.e. there are no instances
in internal usage where an overflow could occur.

This could still represent a security issue for end user code that calls
this function directly.

CVE-2016-2106

Issue reported by Guido Vranken.

Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit 3f3582139fbb259a1c3cbb0a25236500a409bf26)

Fix i2d_X509_AUX: pp can be NULL.

Reported by David Benjamin

Reviewed-by: Emilia Käsper <emilia@openssl.org>
(cherry picked from commit 05aef4bbdbc18e7b9490512cdee41e8a608bcc0e)

Remove confusing comment.

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

Issue #719:

If no serverinfo extension is found in some cases, do not abort the handshake,
but simply omit/skip that extension.

Check for already-registered serverinfo callbacks during serverinfo
registration.

Update SSL_CTX_use_serverinfo() documentation to mention the need to reload the
same serverinfo per certificate, for servers with multiple server certificates.

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

Don't free ret->data if malloc fails.

Issue reported by Guido Vranken.

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

Add checks to X509_NAME_oneline()

Sanity check field lengths and sums to avoid potential overflows and reject
excessively large X509_NAME structures.

Issue reported by Guido Vranken.

Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit 77076dc944f76e821e4eae3a6563b853ce00c0ed)

Conflicts:
crypto/x509/x509_err.c
crypto/x509/x509_obj.c

Sanity check buffer length.

Reject zero length buffers passed to X509_NAME_onelne().

Issue reported by Guido Vranken.

Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit b33d1141b6dcce947708b984c5e9e91dad3d675d)