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 020d8fc8)

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

Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit b785504a)
(cherry picked from commit cb71f17d)

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 3cdd1e94)
(cherry picked from commit 37faf117)

PR#4035

Reviewed-by: Emilia Käsper <emilia@openssl.org>
Reviewed-by: Stephen Henson <steve@openssl.org>
(cherry picked from commit 929f6d6f)

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

Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit 3be39dc1)

Reviewed-by: Dr. Stephen Henson <steve@openssl.org>
MR #1005
(cherry picked from commit a46c9789)

PR#3958

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 2aa5a2c7)

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 03706afa)

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>

Commit f0348c84

 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 dc0c8888)

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 9a931208)

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 91d2728b)

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

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 394f7b6f)

- 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 25d6b340)

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 d7c02691)

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 a7e974c7)

Signed-off-by: Rich Salz <rsalz@akamai.com>
Reviewed-by: Emilia Käsper <emilia@openssl.org>
(cherry picked from commit 36ac7bc8)

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

Follow-up to b11980d7



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

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

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 6dc08048)

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 0927f0d8)

This hopefully conforms closely enough to the current code style.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit d9b3554b)

Reviewed-by: Richard Levitte <levitte@openssl.org>
(cherry picked from commit 4d04226c)
(cherry picked from commit 9c989aaa)

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 f00a10b8)

Signed-off-by: Rich Salz <rsalz@akamai.com>
Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit 8cbb1533)

Signed-off-by: Rich Salz <rsalz@akamai.com>
Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit 208b2d54)

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 ee4ffd6f)

Conflicts:
	ssl/d1_clnt.c

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

Signed-off-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Emilia Käsper <emilia@openssl.org>
(cherry picked from commit 32c5e0ba)

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 3da9505d)

Best hope of keeping current.

Reviewed-by: Tim Hudson <tjh@openssl.org>
(cherry picked from commit 4f46473a)

Clarify and update documention for extra chain certificates.

PR#3878.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 2fd7fb99)

PR#3974
PR#3975

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

Conflicts:
	crypto/evp/evp_lib.c

Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit 891eac46)

Conflicts:
	crypto/cms/cms_enc.c

Reviewed-by: Matt Caswell <matt@openssl.org>
(cherry picked from commit a187e08d)

Conflicts:
	crypto/cms/cms_smime.c

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 f75d5171)

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 d8e8590e)

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>

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>