The tls_client_key_exchange_post_work() frees the pms on error. It also
calls ssl_generate_master_secret() which also free the pms. If an error
occurs after ssl_generate_master_secret() has been called then a double
free can occur.

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

Commit 91fb42dd

 fixed a leak but introduced a problem where a parameter
is erroneously freed instead.

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

Commit 8e588e28

 fixed a leak but introduced a new one.

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

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

Some digest algorithms can't be disabled, don't pretend they can.

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

Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1007)

with some adaptation to new multi-threading API.

Once reference, lock, meth and flag fields are setup,
DSA_free/DH_free can be called directly.

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/996)

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/996)

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/952)

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/952)

OpenSSL 1.1.0-pre5 has made some additional structs opaque. Python's ssl
module requires access to some of the struct members. Three new getters
are added:

int X509_OBJECT_get_type(X509_OBJECT *a);
STACK_OF(X509_OBJECT) *X509_STORE_get0_objects(X509_STORE *v);
X509_VERIFY_PARAM *X509_STORE_get0_param(X509_STORE *ctx);

Signed-off-by: Christian Heimes <cheimes@redhat.com>

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

Recycling an unused slot.

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

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

The code that implements this control would work when enabling nbio,
but the disabling code needed fixing.

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

The function dane_ctx_enable() allocated some memory that it did not
free in an error path.

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

The r2i_certpol() function allocates an ASN1_OBJECT but can fail to free
it in an error path.

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

The rsa_cms_encrypt() function allocates an ASN1_OCTET_STRING but can
then fail to free it in an error condition.

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

The PKCS7_dataFinal() function allocates a memory buffer but then fails
to free it on an error condition.

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

The PKCS12_key_gen_uni() had one error path which did not free memory
correctly.

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

The i2b_PVK function leaked a number of different memory allocations on
error paths (and even some non-error paths).

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

The b2i_rsa() function uses a number of temporary local variables which
get leaked on an error path.

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

On error we could leak a ACCESS_DESCRIPTION and an ASN1_IA5STRING. Both
should be freed in the error path.

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

Calls to BN_CTX_get() can fail so we should check that they were
successful.

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

The cms_SignerInfo_content_sign() function allocated an EVP_MD_CTX but
then failed to free it on an error path.

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

The cms_RecipientInfo_pwri_crypt() allocated an EVP_CIPHER_CTX but then
failed to free it in some error paths. By allocating it a bit later that
can be avoided.

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

In BN_generate_prime_ex() we do some sanity checks first and return
with an error if they fail. We should do that *before* allocating any
resources to avoid a memory leak.

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

In the BN_mpi2bn() function, a failure of a call to BN_bin2bn() could
result in the leak of a previously allocated BIGNUM value.

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

During construction of a mem BIO we allocate some resources. If this
allocation fails we can end up leaking everything we have allocated so
far.

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

When setting an accepted socket for non-blocking, if the operation fails
make sure we close the accepted socket.

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

BIO_sock_error() returned 1 when getsockopt() fails when it should
return the error code for that failure.

Additionally, the optlen parameter to getsockopt() has to point at
the size of the area that the optval parameter points at rather than
zero.  Some systems may forgive it being zero, but others don't.

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

The traditional private key encryption algorithm doesn't function
properly if the IV length of the cipher is zero. These ciphers
(e.g. ECB mode) are not suitable for private key encryption
anyway.

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

We must test for new object == current object, not !=.

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

Coverity reports a potential NULL deref when "2 0 0" DANE trust-anchors
from DNS are configured via SSL_dane_tlsa_add() and X509_STORE_CTX_init()
is called with a NULL stack of untrusted certificates.

Since ssl_verify_cert_chain() always provideds a non-NULL stack of
untrusted certs, and no other code path enables DANE, the problem
can only happen in applications that use SSL_CTX_set_cert_verify_callback()
to implement their own wrappers around X509_verify_cert() passing
only the leaf certificate to the latter.

Regardless of the "improbability" of the problem, we do need to
ensure that build_chain() handles this case correctly.

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

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

The diverse {RSA,DSA,DH}_set0_* functions are made to allow some
parameters to be NULL IF the corresponding numbers in the given key
structure have already been previously initialised.  Specifically,
this allows the addition of private components to be added to a key
that already has the public half, approximately like this:

    RSA_get0_key(rsa, NULL, &e, NULL);
    RSA_get0_factors(rsa, &p, &q);
    /* calculate new d */
    RSA_set0_key(rsa, NULL, NULL, d);

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

Add X509_STORE_{set,get}_ex_data() function and
X509_STORE_get_ex_new_index() macro.

X509_STORE has ex_data and the documentation also mentions them but they
are not actually implemented.

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

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

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

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

A bug meant that SSL_CTRL_SET_MAX_SEND_FRAGMENT was not adjusting
split_send_fragment properly.

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