They may return if an SCT_signature struct is added in the future that
allows them to be refactored to conform to the i2d/d2i function signature
conventions.
Reviewed-by: NRich Salz <rsalz@openssl.org>
Reviewed-by: NMatt Caswell <matt@openssl.org>

Previously, if ct_v1_log_id_from_pkey failed, public_key would be freed by
CTLOG_free at the end of the function, and then again by the caller (who
would assume ownership was not transferred when CTLOG_new returned NULL).
Reviewed-by: NRich Salz <rsalz@openssl.org>
Reviewed-by: NMatt Caswell <matt@openssl.org>

SCT_verify is impossible to call through the public API (SCT_CTX_new() is
not part of the public API), so rename it to SCT_CTX_verify and move it
out of the public API.

SCT_verify_v1 is redundant, since SCT_validate does the same verification
(by calling SCT_verify) and more. The API is less confusing with a single
verification function (SCT_validate).
Reviewed-by: NRich Salz <rsalz@openssl.org>
Reviewed-by: NMatt Caswell <matt@openssl.org>

This is a new minimal corpus with the following changes:
- asn1: files: 1135 (+474), tuples: 27236 (+7496)
- asn1parse: files: 305 (-3), tuples: 8758 (+11)
- bignum: files: 370 (-1), tuples: 9547 (+10)
- bndiv: files: 160 (+0), tuples: 2416 (+6)
- cms: files: 155 (-1), tuples: 3408 (+0)
- conf: files: 231 (-11), tuples: 4668 (+3)
- crl: files: 905 (+188), tuples: 22876 (+4096)
- ct: files: 117 (+35), tuples: 3557 (+908)
- x509: files: 920, tuples: 28334

Note that tuple count depends on the binary and is random.
Reviewed-by: NEmilia Käsper <emilia@openssl.org>
Reviewed-by: NRichard Levitte <levitte@openssl.org>

Reviewed-by: NMatt Caswell <matt@openssl.org>
Reviewed-by: NRichard Levitte <levitte@openssl.org>

 ASN1_buf_print, asn1_print_*, X509_NAME_oneline, X509_NAME_print
Reviewed-by: NMatt Caswell <matt@openssl.org>
Reviewed-by: NRichard Levitte <levitte@openssl.org>

Reviewed-by: NMatt Caswell <matt@openssl.org>
Reviewed-by: NRichard Levitte <levitte@openssl.org>

remove useless cast to call ASN1_STRING_set
Reviewed-by: NMatt Caswell <matt@openssl.org>
Reviewed-by: NRichard Levitte <levitte@openssl.org>

... add a static keyword.
Reviewed-by: NMatt Caswell <matt@openssl.org>
Reviewed-by: NRichard Levitte <levitte@openssl.org>

There was a block of code at the start that used the Camellia cipher. The
original idea behind this was to fill the buffer with non-zero data so that
oversteps can be detected. However this block failed when using no-camellia.
This has been replaced with a RAND_bytes() call.

I also updated the the CTR test section, since it seems to be using a CBC
cipher instead of a CTR cipher.
Reviewed-by: NAndy Polyakov <appro@openssl.org>

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

The assignment to ret is dead, because ret is assigned again later.
Reviewed-by: NTim Hudson <tjh@openssl.org>

If it's negative don't try and malloc it.
Reviewed-by: NTim Hudson <tjh@openssl.org>

Otherwise we try to malloc a -1 size.
Reviewed-by: NTim Hudson <tjh@openssl.org>

Ensure BN_CTX_get() has been successful
Reviewed-by: NTim Hudson <tjh@openssl.org>

The mem pointed to by cAB can be leaked on an error path.
Reviewed-by: NTim Hudson <tjh@openssl.org>

The mem pointed to by cAB can be leaked on an error path.
Reviewed-by: NTim Hudson <tjh@openssl.org>

The mem pointed to by tmp can be leaked on an error path.
Reviewed-by: NTim Hudson <tjh@openssl.org>

Sometimes it is called with a NULL pointer
Reviewed-by: NTim Hudson <tjh@openssl.org>

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

Don't leak pke_ctx on error.
Reviewed-by: NTim Hudson <tjh@openssl.org>

Reviewed-by: NRich Salz <rsalz@openssl.org>
GH: #1472

Signed-off-by: NKurt Roeckx <kurt@roeckx.be>
Reviewed-by: NRich Salz <rsalz@openssl.org>

GH: #1471

The PKCS12 command line utility is not available if no-des is used.
Reviewed-by: NRich Salz <rsalz@openssl.org>

Also, re-organize RSA check to use goto err.
Add a test case.
Try all checks, not just stopping at first (via Richard Levitte)
Reviewed-by: NRichard Levitte <levitte@openssl.org>
Reviewed-by: NRich Salz <rsalz@openssl.org>

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

The variable 'buffer', allocated by EC_POINT_point2buf(), isn't
free'd on the success path.
Reviewed-by: NRich Salz <rsalz@openssl.org>
Reviewed-by: NMatt Caswell <matt@openssl.org>

Declare EC{PK,}PARAMETERS_{new,free} functions in public headers. The
free functions are necessary because EC_GROUP_get_ec{pk,}parameters()
was made public by commit 60b350a3 ("RT3676: Expose ECgroup i2d
functions").
Reviewed-by: NRich Salz <rsalz@openssl.org>
Reviewed-by: NMatt Caswell <matt@openssl.org>

Code was relying on an implicit data-sharing through duplication of
loopargs_t pointer-members made by ASYNC_start_job().

Now share structure address instead of structure content.
Reviewed-by: NRich Salz <rsalz@openssl.org>
Reviewed-by: NMatt Caswell <matt@openssl.org>

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

The following would fail, or rather, freeze:

    openssl genrsa -out rsa2048.pem 2048
    openssl req -x509 -key rsa2048.pem -keyform PEM -out cert.pem

In that case, the second command wants to read a certificate request
from stdin, because -x509 wasn't fully flagged as being for creating
something new.  This changes makes it fully flagged.

RT#4655
Reviewed-by: NAndy Polyakov <appro@openssl.org>

Original strategy for page-walking was adjust stack pointer and then
touch pages in order. This kind of asks for double-fault, because
if touch fails, then signal will be delivered to frame above adjusted
stack pointer. But touching pages prior adjusting stack pointer would
upset valgrind. As compromise let's adjust stack pointer in pages,
touching top of the stack. This still asks for double-fault, but at
least prevents corruption of neighbour stack if allocation is to
overstep the guard page.

Also omit predict-non-taken hints as they reportedly trigger illegal
instructions in some VM setups.
Reviewed-by: NRichard Levitte <levitte@openssl.org>

The previous ciphersuite broke in no-ec builds.
Reviewed-by: NRichard Levitte <levitte@openssl.org>

Fix an off by one error in the overflow check added by 07bed46f
("Check for errors in BN_bn2dec()").
Reviewed-by: NStephen Henson <steve@openssl.org>
Reviewed-by: NMatt Caswell <matt@openssl.org>

In mempacket_test_read(), we've already fetched the top value of the
stack, so when we shift the stack, we don't care for the value.  The
compiler needs to be told, or it will complain harshly when we tell it
to be picky.
Reviewed-by: NMatt Caswell <matt@openssl.org>

Originally PKCS#12 subroutines treated password strings as ASCII.
It worked as long as they were pure ASCII, but if there were some
none-ASCII characters result was non-interoperable. But fixing it
poses problem accessing data protected with broken password. In
order to make asscess to old data possible add retry with old-style
password.
Reviewed-by: NRichard Levitte <levitte@openssl.org>

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

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

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

Follow on from CVE-2016-2179

The investigation and analysis of CVE-2016-2179 highlighted a related flaw.

This commit fixes a security "near miss" in the buffered message handling
code. Ultimately this is not currently believed to be exploitable due to
the reasons outlined below, and therefore there is no CVE for this on its
own.

The issue this commit fixes is a MITM attack where the attacker can inject
a Finished message into the handshake. In the description below it is
assumed that the attacker injects the Finished message for the server to
receive it. The attack could work equally well the other way around (i.e
where the client receives the injected Finished message).

The MITM requires the following capabilities:
- The ability to manipulate the MTU that the client selects such that it
is small enough for the client to fragment Finished messages.
- The ability to selectively drop and modify records sent from the client
- The ability to inject its own records and send them to the server

The MITM forces the client to select a small MTU such that the client
will fragment the Finished message. Ideally for the attacker the first
fragment will contain all but the last byte of the Finished message,
with the second fragment containing the final byte.

During the handshake and prior to the client sending the CCS the MITM
injects a plaintext Finished message fragment to the server containing
all but the final byte of the Finished message. The message sequence
number should be the one expected to be used for the real Finished message.

OpenSSL will recognise that the received fragment is for the future and
will buffer it for later use.

After the client sends the CCS it then sends its own Finished message in
two fragments. The MITM causes the first of these fragments to be
dropped. The OpenSSL server will then receive the second of the fragments
and reassemble the complete Finished message consisting of the MITM
fragment and the final byte from the real client.

The advantage to the attacker in injecting a Finished message is that
this provides the capability to modify other handshake messages (e.g.
the ClientHello) undetected. A difficulty for the attacker is knowing in
advance what impact any of those changes might have on the final byte of
the handshake hash that is going to be sent in the "real" Finished
message. In the worst case for the attacker this means that only 1 in
256 of such injection attempts will succeed.

It may be possible in some situations for the attacker to improve this such
that all attempts succeed. For example if the handshake includes client
authentication then the final message flight sent by the client will
include a Certificate. Certificates are ASN.1 objects where the signed
portion is DER encoded. The non-signed portion could be BER encoded and so
the attacker could re-encode the certificate such that the hash for the
whole handshake comes to a different value. The certificate re-encoding
would not be detectable because only the non-signed portion is changed. As
this is the final flight of messages sent from the client the attacker
knows what the complete hanshake hash value will be that the client will
send - and therefore knows what the final byte will be. Through a process
of trial and error the attacker can re-encode the certificate until the
modified handhshake also has a hash with the same final byte. This means
that when the Finished message is verified by the server it will be
correct in all cases.

In practice the MITM would need to be able to perform the same attack
against both the client and the server. If the attack is only performed
against the server (say) then the server will not detect the modified
handshake, but the client will and will abort the connection.
Fortunately, although OpenSSL is vulnerable to Finished message
injection, it is not vulnerable if *both* client and server are OpenSSL.
The reason is that OpenSSL has a hard "floor" for a minimum MTU size
that it will never go below. This minimum means that a Finished message
will never be sent in a fragmented form and therefore the MITM does not
have one of its pre-requisites. Therefore this could only be exploited
if using OpenSSL and some other DTLS peer that had its own and separate
Finished message injection flaw.

The fix is to ensure buffered messages are cleared on epoch change.
Reviewed-by: NRichard Levitte <levitte@openssl.org>