RT4051: fix ciphers man page typo

the alias supported by OpenSSL 1.0.1 is "EECDH" not "EECDHE"
(GH PR 405)

Signed-off-by: Rich Salz <rsalz@akamai.com>
Reviewed-by: Andy Polyakov <appro@openssl.org>

RT2772: accept empty SessionTicket

RFC 5077 section 3.3 says: If the server determines that it does not
want to include a ticket after it has included the SessionTicket
extension in the ServerHello, then it sends a zero-length ticket in the
NewSessionTicket handshake message.

Previously the client would fail upon attempting to allocate a
zero-length buffer. Now, we have the client ignore the empty ticket and
keep the existing session.

Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit 21b538d616b388fa0ce64ef54da3504253895cf8)

SRP memory leak fix

Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit 92ea6fe597238779e23fd9e1fee82d30641d61a8)

Fix typo in previous merge

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

Change --debug to -d for compat with old releases.

Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit 1d4ddb4e1a088f1333c4bb155c52c7f94e572bca)

BUF_strdup and friends: update docs

Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit 58e3457a82e8940ff36b36949f9c7a60e7614b2c)
(cherry picked from commit be250ee2d353a9c8ed858bf8ca274d3107ae2f64)

BUF_strndup: tidy

Fix comment, add another overflow check, tidy style

Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit de8883e11befde31d9b6cfbbd1fc017c365e0bbf)
(cherry picked from commit f5afe9ce3f7ab8d2fef460054d1170427db0d02c)

Make BUF_strndup() read-safe on arbitrary inputs

BUF_strndup was calling strlen through BUF_strlcpy, and ended up reading
past the input if the input was not a C string.

Make it explicitly part of BUF_strndup's contract to never read more
than |siz| input bytes. This augments the standard strndup contract to
be safer.

The commit also adds a check for siz overflow and some brief documentation
for BUF_strndup().

Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit 110f7b37de9feecfb64950601cc7cec77cf6130b)
(cherry picked from commit f61216ba9d17430fb5eb3e2b202a209960b9d51b)

GH398: Add mingw cross-compile, etc.

For all release branches.  It adds travis build support. If you don't
have a config file it uses the default (because we enabled travis for the
project), which uses ruby/rake/rakefiles, and you get confusing "build
still failing" messages.

Reviewed-by: Andy Polyakov <appro@openssl.org>
(cherry picked from commit db9defdfe306e1adf0af7188b187d535eb0268da)

RT3479: Add UTF8 support to BIO_read_filename()

If we use BIO_new_file(), on Windows it'll jump through hoops to work
around their unusual charset/Unicode handling. it'll convert a UTF-8
filename to UCS-16LE and attempt to use _wfopen().

If you use BIO_read_filename(), it doesn't do this. Shouldn't it be
consistent?

It would certainly be nice if SSL_use_certificate_chain_file() worked.

Also made BIO_C_SET_FILENAME work (rsalz)

Signed-off-by: Rich Salz <rsalz@akamai.com>
Reviewed-by: Andy Polyakov <appro@openssl.org>
(cherry picked from commit ff03599a2f518dbdf13bca0bb0208e431b892fe9)

RT3823: Improve the robustness of event logging

There are a couple of minor fixes here:

1) Handle the case when RegisterEventSource() fails (which it may for
various reasons) and do the work of logging the event only if it succeeds.

2) Handle the case when ReportEvent() fails and do our best in debug builds
to at least attempt somehow indicate that something has gone wrong. The
typical situation would be someone running tools like DbMon, DBWin32,
DebugView or just having the debugger attached. The intent is to make sure
that at least some data will be captured so that we can save hours and days
of debugging time.

3) Minor fix to change the MessageBox() flag to MB_ICONERROR. Though the
value of MB_ICONERROR is the same value as MB_ICONSTOP, the intent is
better conveyed by using MB_ICONERROR.

Testing performed:

1) Clean compilation for debug-VC-WIN32 and VC-WIN32.

2) Good test results (nmake -f ms\ntdll.mak test) for debug-VC-WIN32 and
VC-WIN32.

3) Stepped through relevant changes using WinDBG and exercised the impacted
code paths.

Signed-off-by: Rich Salz <rsalz@akamai.com>
Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit 4cd94416a452c3a3e0df24c297f7d2f0e6d5bb5f)

Fix SRP memory leaks

There were some memory leaks in the creation of an SRP verifier (both on
successful completion and also on some error paths).

Reviewed-by: Emilia Käsper <emilia@openssl.org>
(cherry picked from commit bf95cde28712cfcad90cb3975cdcb8e5c0f20fde)

Make SRP work with -www

PR#3817

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 4e7e623012e1604d985e2ef362c2957d464f3f01)

Conflicts:
apps/s_server.c

Handle SSL_ERROR_WANT_X509_LOOKUP

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit f1c412c9e63f7c9cac2c723bff09cce563dda1b0)

Fix indentation

Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit 4fe1cbdff89768c5d1983988ce1022674a438bbb)

This undoes GH367 for non-master

Was only approved for master, to avoid compatibility issues on
previous releases.

Reviewed-by: Emilia Käsper <emilia@openssl.org>
(cherry picked from commit 6be18a22199de4d114b53686c31ba02723fc2c18)

Make sure OPENSSL_cleanse checks for NULL

In master we have the function OPENSSL_clear_free(x,y), which immediately
returns if x == NULL. In <=1.0.2 this function does not exist so we have to
do:
OPENSSL_cleanse(x, y);
OPENSSL_free(x);

However, previously, OPENSSL_cleanse did not check that if x == NULL, so
the real equivalent check would have to be:
if (x != NULL)
    OPENSSL_cleanse(x, y);
OPENSSL_free(x);

It would be easy to get this wrong during cherry-picking to other branches
and therefore, for safety, it is best to just ensure OPENSSL_cleanse also
checks for NULL.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 020d8fc83fe1a94232db1ee1166309e2458a8a18)

base64 decode: check for high bit

Previously, the conversion would silently coerce to ASCII. Now, we error
out.

Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit b785504a10310cb2872270eb409b70971be5e76e)
(cherry picked from commit cb71f17dc786c72ec74c0ebb983b3ccfde484271)

RT3757: base64 encoding bugs

Rewrite EVP_DecodeUpdate.

In particular: reject extra trailing padding, and padding in the middle
of the content. Don't limit line length. Add tests.

Previously, the behaviour was ill-defined, and depended on the position
of the padding within the input.

In addition, this appears to fix a possible two-byte oob read.

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Dr Stephen Henson <steve@openssl.org>
(cherry picked from commit 3cdd1e94b1d71f2ce3002738f9506da91fe2af45)
(cherry picked from commit 37faf117965de181f4de0b4032eecac2566de5f6)

Make no-psk compile without warnings.

PR#4035

Reviewed-by: Emilia Käsper <emilia@openssl.org>
Reviewed-by: Stephen Henson <steve@openssl.org>
(cherry picked from commit 929f6d6f55275b17cfdd5c405ef403bce87c9aef)

RT4044: Remove .cvsignore files.

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

RT4044: Remove .cvsignore files.

Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit 3be39dc1e3378d79531e385a72051c4dc5c6b34d)

d2i: don't update input pointer on failure

Reviewed-by: Dr. Stephen Henson <steve@openssl.org>
MR #1005
(cherry picked from commit a46c9789ce2aecedceef119e9883513c7a49f1ca)

Check for FIPS mode after loading config.

PR#3958

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 2aa5a2c76656f3873fecd0f0bcc628c1861c27a9)

Use default field separator.

If the field separator isn't specified through -nameopt then use
XN_FLAG_SEP_CPLUS_SPC instead of printing nothing and returing an error.

PR#2397

Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit 03706afa30aeb4407287171a9d6f9a765395d0a2)

RT3754: check for NULL pointer

Fix both the caller to error out on malloc failure, as well as the
eventual callee to handle a NULL gracefully.

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

Fix session resumption

Commit f0348c842e7 introduced a problem with session resumption. The
version for the session is fixed when the session is created. By moving
the creation of the session earlier in the process the version is fixed
*before* version negotiation has completed when processing the ServerHello
on the client side. This fix updates the session version after version neg
has completed.

Reviewed-by: Emilia Käsper <emilia@openssl.org>
(cherry picked from commit dc0c888811cebfa2d21c844be0d81335fb2361da)

Fix building with OPENSSL_NO_TLSEXT.

Builds using no-tlsext in 1.0.0 and 0.9.8 are broken. This commit fixes the
issue. The same commit is applied to 1.0.1 and 1.0.2 branches for code
consistency. However this commit will not fix no-tlsext in those branches
which have always been broken for other reasons. The commit is not applied
to master at all, because no-tlsext has been completely removed from that
branch.

Based on a patch by Marc Branchaud <marcnarc@xiplink.com>

Reviewed-by: Emilia Käsper <emilia@openssl.org>
(cherry picked from commit 9a931208d7fc8a3596dda005cdbd6439938f01b0)

Fix the comment for POINT_CONVERSION_UNCOMPRESSED

The |z| value should be 0x04 not 0x02

RT#3838

Signed-off-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Emilia Käsper <emilia@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit 91d2728b38b1df930f337e163816a0fc9580b6a6)

OpenSSL 1.0.1n: add missing CHANGES entry

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

RT4002: check for NULL cipher in p12_crpt.c

The NULL cipher case can't actually happen because we have no
EVP_PBE_CTL combinations where cipher_nid is -1 and keygen is
PKCS12_PBE_keyivgen. But make the code more obviously correct.

Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit 394f7b6fcc38132b8ccff0a3253b9dd15640cfc0)

RT 3493: fix RSA test

- Pass in the right ciphertext length to ensure we're indeed testing
  ciphertext corruption (and not truncation).
- Only test one mutation per byte to not make the test too slow.
- Add a separate test for truncated ciphertexts.

Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit 25d6b3401ca40c9a2cbe5080449c1c2a37037777)

Ignore .dir-locals.el

Because we recently encourage people to have a .dir-locals.el, it's a good
idea to ignore it on a git level.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit d7c02691a5e6f2716759eacb6f48c39f15ee57c8)

check bn_new return value

Slightly modified from the original PR.
Signed-off-by: Rich Salz <rsalz@akamai.com>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit a7e974c7be90e2c9673e2ce6215a70f734eb8ad4)

GH367 follow-up, for more clarity

Signed-off-by: Rich Salz <rsalz@akamai.com>
Reviewed-by: Emilia Käsper <emilia@openssl.org>
(cherry picked from commit 36ac7bc8a9c856bcdff6eecdaca128ccc5430a1e)

BN_mod_exp_mont_consttime: check for zero modulus.

Don't dereference |d| when |top| is zero. Also test that various BIGNUM methods behave correctly on zero/even inputs.

Follow-up to b11980d79a52ec08844f08bea0e66c04b691840b

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

Remove auto-fill-mode

Apparently, emacs sees changes to auto-fill-mode as insecure

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 6dc08048d93ff35de882878f190ae49aa698b5d2)

Add an example .dir-locals.el

This file, when copied to .dir-locals.el in the OpenSSL source top,
will make sure that the CC mode style "OpenSSL-II" will be used for
all C files.

Additionally, I makes sure that tabs are never used as indentation
character, regardless of the emacs mode, and that the fill column is
78.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 0927f0d822b1e0f55cb7d8bacf9004ad3495514b)

Add emacs CC mode style for OpenSSL

This hopefully conforms closely enough to the current code style.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit d9b3554b2d9724bc2d1621a026ddaf0223e2d191)

bntest: don't dereference the |d| array for a zero BIGNUM.

Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit 4d04226c2ec7e7f69f6234def63631648e35e828)
(cherry picked from commit 9c989aaa749d88b63bef5d5beeb3046eae62d836)

GH367: Fix dsa keygen for too-short seed

If the seed value for dsa key generation is too short (< qsize),
return an error. Also update the documentation.

Signed-off-by: Rich Salz <rsalz@akamai.com>
Reviewed-by: Emilia Käsper <emilia@openssl.org>
(cherry picked from commit f00a10b89734e84fe80f98ad9e2e77b557c701ae)

Fixed problem with multiple load-unload of comp zlib

Signed-off-by: Rich Salz <rsalz@akamai.com>
Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit 8cbb153357896c4b224e0678550944f7851bc3b2)

GH correct organizationalUnitName

Signed-off-by: Rich Salz <rsalz@akamai.com>
Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit 208b2d541dcb3b8f62639d2a8cc5771af4ba8755)

Fix DTLS session ticket renewal

A DTLS client will abort a handshake if the server attempts to renew the
session ticket. This is caused by a state machine discrepancy between DTLS
and TLS discovered during the state machine rewrite work.

The bug can be demonstrated as follows:

Start a DTLS s_server instance:
openssl s_server -dtls

Start a client and obtain a session but no ticket:
openssl s_client -dtls -sess_out session.pem -no_ticket

Now start a client reusing the session, but allow a ticket:
openssl s_client -dtls -sess_in session.pem

The client will abort the handshake.

Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit ee4ffd6fccd169775ba74afb1dbfecff48ee413d)

Conflicts:
ssl/d1_clnt.c

RT4019: Duplicate -hmac flag in dgst.pod

Signed-off-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Emilia Käsper <emilia@openssl.org>

GH372: Remove duplicate flags

Signed-off-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Emilia Käsper <emilia@openssl.org>
(cherry picked from commit 32c5e0ba0f9097e9c788ed8402fcbf6646cd2c2d)

Add new types to indent.pro

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 3da9505dc02b0594633c73a11343f54bb5dbf536)

Move FAQ to the web.

Best hope of keeping current.

Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit 4f46473a86c9e3741203b22d4d401a3763583494)

Update docs.

Clarify and update documention for extra chain certificates.

PR#3878.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 2fd7fb99dba9f56fbcb7ee1686bef30c7aef4754)

Return error for unsupported modes.

PR#3974
PR#3975

Reviewed-by: Matt Caswell <matt@openssl.org>
Conflicts:
crypto/evp/evp_lib.c

Fix memory leak if setup fails.

Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit 891eac4604b5f05413e59602fae1f11136f4719a)

Conflicts:
crypto/cms/cms_enc.c

Err isn't always malloc failure.

Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit a187e08d856690b5c1da3184d0ff560d572f893b)

Conflicts:
crypto/cms/cms_smime.c

Fix "make test" seg fault with SCTP enabled

When config'd with "sctp" running "make test" causes a seg fault. This is
actually due to the way ssltest works - it dives under the covers and frees
up BIOs manually and so some BIOs are NULL when the SCTP code does not
expect it. The simplest fix is just to add some sanity checks to make sure
the BIOs aren't NULL before we use them.

This problem occurs in master and 1.0.2. The fix has also been applied to
1.0.1 to keep the code in sync.

Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit f75d5171be0b3b5419c8974133e1573cf976a8bb)

Fix missing return value checks in SCTP

There are some missing return value checks in the SCTP code. In master this
was causing a compilation failure when config'd with
"--strict-warnings sctp".

Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit d8e8590ed90eba6ef651d09d77befb14f980de2c)

Check for 0 modulus in BN_MONT_CTX_set

The function BN_MONT_CTX_set was assuming that the modulus was non-zero
and therefore that |mod->top| > 0. In an error situation that may not be
the case and could cause a seg fault.

This is a follow on from CVE-2015-1794.

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

Fix seg fault with 0 p val in SKE

If a client receives a ServerKeyExchange for an anon DH ciphersuite with the
value of p set to 0 then a seg fault can occur. This commits adds a test to
reject p, g and pub key parameters that have a 0 value (in accordance with
RFC 5246)

The security vulnerability only affects master and 1.0.2, but the fix is
additionally applied to 1.0.1 for additional confidence.

CVE-2015-1794

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

Fix warning when compiling with no-ec2m

EC_KEY_set_public_key_affine_coordinates was using some variables that only
apply if OPENSSL_NO_EC2M is not defined.

Reviewed-by: Viktor Dukhovni <viktor@openssl.org>
(cherry picked from commit 8d11b7c7ee84ad0aa243476088285d15b22c5470)

GH336: Return an exit code if report fails

Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit e36ce2d986a5edbd33d6d176fb95c8046fae9725)

Clear BN-mont values when free'ing it.

From a CloudFlare patch.

Reviewed-by: Dr. Stephen Henson <steve@openssl.org>
(cherry picked from commit 1a586b3942de1c0bd64203d09385d5e74f499d8d)

use X9.31 keygen by default in FIPS mode

Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit d0c9a90640c8902fef3eb74e8ef05227f8e7dcb7)

RT3774: double-free in DSA

Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit fa4629b6a2518d202fd051f228c3d8770682b3be)

Tweak README about rt and bug reporting.

Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit 932af1617e277904bcca6e47729a420bba39785b)

Fix SSL_set_session_ticket_ext when used with SSLv23_method

The function SSL_set_session_ticket_ext can be used to set custom session
ticket data passed in the initial ClientHello. This can be particularly
useful for EAP-FAST. However, when using SSLv23_method, the session does
not get created until the ServerHello has been received. The extension code
will only add the SessionTicket data to the ClientHello if a session already
exists. Therefore SSL_set_session_ticket_ext has no impact when used in
conjunction with SSLv23_method. The solution is to simply create the session
during creation of the ClientHello instead of waiting for the ServerHello.

This commit fixes the test failure introduced by the previous commit.

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

Add test for SSL_set_session_ticket_ext

The function SSL_set_session_ticket_ext sets the ticket data to be sent in
the ClientHello. This is useful for EAP-FAST. This commit adds a test to
ensure that when this function is called the expected ticket data actually
appears in the ClientHello.

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

Fix author credit for e5c0bc6

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

Revert "Missing perldoc markup around < literal"

This reverts commit e5c0bc6cc49a23b50a272801c4bd53639c25fca4.
Reviewed-by: Richard Levitte <levitte@openssl.org>

GH322: Fix typo in generated comment.

Reviewed-by: Viktor Dukhovni <viktor@openssl.org>
(cherry picked from commit ad282e638b6824325fb83ecf7cde2e7996f52b79)

Missing perldoc markup around < literal

Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit e5c0bc6cc49a23b50a272801c4bd53639c25fca4)

Conversion to UTF-8 where needed

This leaves behind files with names ending with '.iso-8859-1'.  These
should be safe to remove.  If something went wrong when re-encoding,
there will be some files with names ending with '.utf8' left behind.

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

Small script to re-encode files that need it to UTF-8

This requires 'iconv' and that 'file' can take the options '-b' and '-i'.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit f608b4064d58ca4dfdfdfc921308b51cb96205e2)

Remove extra '; \' in apps/Makefile

Fixes GH#330

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit eeb97bce751296b2e04a92d00c0d0a792ba61834)

Conflicts:
apps/Makefile

Set numeric IDs for tar as well

Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit da24e6f8a05ea657684094e04c1a54efa04c2962)

Stop using tardy

Instead of piping through tardy, and possibly suffering from bugs in certain
versions, use --transform, --owner and --group directly with GNU tar (we
already expect that tar variant).

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 27f98436b9a84b94fbdd8e32960504634ae44cc0)

Conflicts:
Makefile.org

Exit on error in ecparam

Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit 99dcd88035330d59ab40b5bc0f551aca7020cd30)

Sort @sstacklst correctly.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 2a7059c56f885a3fa0842e886f5178def8e5481d)

Prepare for 1.0.1q-dev

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

Prepare for 1.0.1p release

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

Update CHANGES and NEWS for the new release

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

Fix alt chains bug

This is a follow up to the alternate chains certificate forgery issue
(CVE-2015-1793). That issue is exacerbated in 1.0.1 by a related bug which
means that we *always* check for an alternative chain, even if we have
already found a chain. The code is supposed to stop as soon as it has found
one (and does do in master and 1.0.2).

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

Reject calls to X509_verify_cert that have not been reinitialised

The function X509_verify_cert checks the value of |ctx->chain| at the
beginning, and if it is NULL then it initialises it, along with the value
of ctx->untrusted. The normal way to use X509_verify_cert() is to first
call X509_STORE_CTX_init(); then set up various parameters etc; then call
X509_verify_cert(); then check the results; and finally call
X509_STORE_CTX_cleanup(). The initial call to X509_STORE_CTX_init() sets
|ctx->chain| to NULL. The only place in the OpenSSL codebase  where
|ctx->chain| is set to anything other than a non NULL value is in
X509_verify_cert itself. Therefore the only ways that |ctx->chain| could be
non NULL on entry to X509_verify_cert is if one of the following occurs:
1) An application calls X509_verify_cert() twice without re-initialising
in between.
2) An application reaches inside the X509_STORE_CTX structure and changes
the value of |ctx->chain| directly.

With regards to the second of these, we should discount this - it should
not be supported to allow this.

With regards to the first of these, the documentation is not exactly
crystal clear, but the implication is that you must call
X509_STORE_CTX_init() before each call to X509_verify_cert(). If you fail
to do this then, at best, the results would be undefined.

Calling X509_verify_cert() with |ctx->chain| set to a non NULL value is
likely to have unexpected results, and could be dangerous. This commit
changes the behaviour of X509_verify_cert() so that it causes an error if
|ctx->chain| is anything other than NULL (because this indicates that we
have not been initialised properly). It also clarifies the associated
documentation. This is a follow up commit to CVE-2015-1793.

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

Add test for CVE-2015-1793

This adds a test for CVE-2015-1793. This adds a new test file
verify_extra_test.c, which could form the basis for additional
verification tests.

Reviewed-by: Stephen Henson <steve@openssl.org>
Conflicts:
test/Makefile

Fix alternate chains certificate forgery issue

During certificate verfification, OpenSSL will attempt to find an
alternative certificate chain if the first attempt to build such a chain
fails. An error in the implementation of this logic can mean that an
attacker could cause certain checks on untrusted certificates to be
bypassed, such as the CA flag, enabling them to use a valid leaf
certificate to act as a CA and "issue" an invalid certificate.

This occurs where at least one cert is added to the first chain from the
trust store, but that chain still ends up being untrusted. In that case
ctx->last_untrusted is decremented in error.

Patch provided by the BoringSSL project.

CVE-2015-1793

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

Relax CCM tag check.

In CCM mode don't require a tag before initialising decrypt: this allows
the tag length to be set without requiring the tag.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 9cca7be11d62298b2af0722f94345012c86eaed4)

document -2 return value

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 5727582cf51e98e5e0faa435e7da2c8929533c0d)

Fix PSK handling.

The PSK identity hint should be stored in the SSL_SESSION structure
and not in the parent context (which will overwrite values used
by other SSL structures with the same SSL_CTX).

Use BUF_strndup when copying identity as it may not be null terminated.

Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit 3c66a669dfc7b3792f7af0758ea26fe8502ce70c)

Check for errors with SRP

Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit 5fced2395ddfb603a50fd1bd87411e603a59dc6f)

Don't output bogus errors in PKCS12_parse

PR#3923

Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit ffbf304d4832bd51bb0618f8ca5b7c26647ee664)

RT3907-fix

Typo in local variable name; introduced by previous fix.

Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit cc3f3fc2b1c94d65824ab8d69595b6d89b17cf8d)

RT3907: avoid "local" in testssl script

Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit 75ba5c58c6b3b3326a6c3198100830afa120e7c3)

Cleanup mttest.c : because we no longer use stdio here, don't include it

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 8ca96efd24b73f917837fdd45b1c22d7b8ff8cbd)

Add -ldl to the build of mttest.c

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit d62c98c81c7b47b7b1878fd7e91e5fd33818faf0)

Cleanup mttest.c : do not try to output reference counts when threads are done

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 964626957f79e07ed97756527cdc7e84007c60c9)

Cleanup mttest.c : better error reporting when certs are missing

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 7a1789d254c561bd3024c971b5cfeeedd12d63f3)

Cleanup mttest.c : make ssl_method a pointer to const

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit f4c73bfe0ab7a0e8f82fe2947c0f77fe3d98acab)

Conflicts:
crypto/threads/mttest.c

Cleanup mttest.c : more output changes

More fprintf()s and printf()s to turn into BIO calls.

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

Cleanup mttest.c : modernise output

Construct bio_err and bio_stdout from file handles instead of FILE
pointers, since the latter might not be implemented (when OPENSSL_NO_STDIO
is defined).
Convert all output to use BIO_printf.
Change lh_foo to lh_SSL_SESSION_foo.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit bb8abd6735e198de36c1eb9098a7f1516d156220)

Conflicts:
crypto/threads/mttest.c

Cleanup mttest.c : modernise the threads setup

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 5c78e1835285ce4acdc7cc4f4c06aa7d6661c9b4)

Conflicts:
crypto/threads/mttest.c

Cleanup mttest.c : remove MS_CALLBACK

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit a3f9286556d6d78c1800caae97a9328afb2557e6)

RT1688: Add dependencies for parallel make

Backport to 1.0.1 and 1.0.2 to fix RT 3905

Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit 8e6bb99979b95ee8b878e22e043ceb78d79c32a1)

Make preprocessor error into real preprocessor error

Reviewed-by: Kurt Roeckx <kurt@openssl.org>
(cherry picked from commit b4f0d1a4a89b964dba80036a6348ca0a1913c526)