Commit Graph

228 Commits

Author SHA1 Message Date
David von Oheimb
9fdcc21fdc constify *_dup() and *i2d_*() and related functions as far as possible, introducing DECLARE_ASN1_DUP_FUNCTION
Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/8029)
2019-03-06 16:10:09 +00:00
Richard Levitte
2c18d164f5 Following the license change, modify the boilerplates in ssl/
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7768)
2018-12-06 14:20:59 +01:00
Andy Polyakov
9ef9088c15 ssl/*: switch to switch to Thread-Sanitizer-friendly primitives.
Reviewed-by: Paul Dale <paul.dale@oracle.com>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/6786)
2018-08-07 09:08:23 +02:00
Benjamin Kaduk
1c4aa31d79 Normalize SNI hostname handling for SSL and SSL_SESSION
In particular, adhere to the rule that we must not modify any
property of an SSL_SESSION object once it is (or might be) in
a session cache.  Such modifications are thread-unsafe and have
been observed to cause crashes at runtime.

To effect this change, standardize on the property that
SSL_SESSION->ext.hostname is set only when that SNI value
has been negotiated by both parties for use with that session.
For session resumption this is trivially the case, so only new
handshakes are affected.

On the client, the new semantics are that the SSL->ext.hostname is
for storing the value configured by the caller, and this value is
used when constructing the ClientHello.  On the server, SSL->ext.hostname
is used to hold the value received from the client.  Only if the
SNI negotiation is successful will the hostname be stored into the
session object; the server can do this after it sends the ServerHello,
and the client after it has received and processed the ServerHello.

This obviates the need to remove the hostname from the session object
in case of failed negotiation (a change that was introduced in commit
9fb6cb810b in order to allow TLS 1.3
early data when SNI was present in the ClientHello but not the session
being resumed), which was modifying cached sessions in certain cases.
(In TLS 1.3 we always produce a new SSL_SESSION object for new
connections, even in the case of resumption, so no TLS 1.3 handshakes
were affected.)

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/6378)
2018-07-20 07:12:24 -05:00
Matt Caswell
6cc0b3c217 Respect SSL_OP_NO_TICKET in TLSv1.3
Implement support for stateful TLSv1.3 tickets, and use them if
SSL_OP_NO_TICKET is set.

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Viktor Dukhovni <viktor@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/6563)
2018-06-26 18:09:46 +01:00
Matt Caswell
27232cc338 Don't use OPENSSL_strdup() for copying alpn_selected
An alpn_selected value containing NUL bytes in it will result in
ext.alpn_selected_len having a larger value than the number of bytes
allocated in ext.alpn_selected.

Issue found by OSS-fuzz.

Reviewed-by: Andy Polyakov <appro@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/6507)
2018-06-21 11:07:45 +01:00
Marcus Huewe
c0a58e034d Do not free a session before calling the remove_session_cb
If the remove_session_cb accesses the session's data (for instance,
via SSL_SESSION_get_protocol_version), a potential use after free
can occur. For this, consider the following scenario when adding
a new session via SSL_CTX_add_session:

- The session cache is full
  (SSL_CTX_sess_number(ctx) > SSL_CTX_sess_get_cache_size(ctx))
- Only the session cache has a reference to ctx->session_cache_tail
  (that is, ctx->session_cache_tail->references == 1)

Since the cache is full, remove_session_lock is called to remove
ctx->session_cache_tail from the cache. That is, it
SSL_SESSION_free()s the session, which free()s the data. Afterwards,
the free()d session is passed to the remove_session_cb. If the callback
accesses the session's data, we have a use after free.

The free before calling the callback behavior was introduced in
commit e4612d02c5 ("Remove sessions
from external cache, even if internal cache not used.").

CLA: trivial

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/6222)
2018-06-07 13:08:07 +01:00
Matt Caswell
6cf2dbd9fa Don't store the ticket nonce in the session
We generate the secrets based on the nonce immediately so there is no
need to keep the nonce.

Reviewed-by: Andy Polyakov <appro@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/6415)
2018-06-07 10:58:35 +01:00
Bernd Edlinger
1bb829300a Fix array bounds violation in ssl_session_dup
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/6353)
2018-05-25 08:06:55 +02:00
Matt Caswell
61fb59238d Rework the decrypt ticket callback
Don't call the decrypt ticket callback if we've already encountered a
fatal error. Do call it if we have an empty ticket present.

Change the return code to have 5 distinct returns codes and separate it
from the input status value.

Reviewed-by: Viktor Dukhovni <viktor@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/6198)
2018-05-11 14:51:09 +01:00
Rich Salz
e6e9170d6e Allow NULL for some _free routines.
Based on the description in https://github.com/openssl/openssl/pull/5757,
this re-implements the "allow NULL to be passed" behavior of a number of
xxx_free routines.  I also fixed up some egregious formatting errors
that were nearby.

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5761)
2018-03-27 16:25:08 -04:00
Matt Caswell
320a81277e Remove some code for a contributor that we cannot find
This removes some code because we cannot trace the original contributor
to get their agreement for the licence change (original commit e03ddfae).

After this change there will be numerous failures in the test cases until
someone rewrites the missing code.

All *_free functions should accept a NULL parameter. After this change
the following *_free functions will fail if a NULL parameter is passed:

BIO_ACCEPT_free()
BIO_CONNECT_free()
BN_BLINDING_free()
BN_CTX_free()
BN_MONT_CTX_free()
BN_RECP_CTX_free()
BUF_MEM_free()
COMP_CTX_free()
ERR_STATE_free()
TXT_DB_free()
X509_STORE_free()
ssl3_free()
ssl_cert_free()
SSL_SESSION_free()
SSL_free()

[skip ci]

Reviewed-by: Bernd Edlinger <bernd.edlinger@hotmail.de>
(Merged from https://github.com/openssl/openssl/pull/5757)
2018-03-27 17:15:24 +01:00
Matt Caswell
b0edda11cb Update copyright year
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5689)
2018-03-20 13:08:46 +00:00
Kurt Roeckx
16cfc2c90d Don't use a ssl specific DRBG anymore
Since the public and private DRBG are per thread we don't need one
per ssl object anymore. It could also try to get entropy from a DRBG
that's really from an other thread because the SSL object moved to an
other thread.

Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Paul Dale <paul.dale@oracle.com>
Reviewed-by: Matthias St. Pierre <Matthias.St.Pierre@ncp-e.com>
(Merged from https://github.com/openssl/openssl/pull/5547)
2018-03-19 15:04:40 +01:00
Matt Caswell
66d7de1634 Add an anti-replay mechanism
If the server is configured to allow early data then we check if the PSK
session presented by the client is available in the cache or not. If it
isn't then this may be a replay and we disallow it. If it is then we allow
it and remove the session from the cache. Note: the anti-replay protection
is not used for externally established PSKs.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5644)
2018-03-19 12:21:41 +00:00
Matt Caswell
32305f8850 Always call the new_session_cb when issuing a NewSessionTicket in TLSv1.3
Conceptually in TLSv1.3 there can be multiple sessions associated with a
single connection. Each NewSessionTicket issued can be considered a
separate session. We can end up issuing multiple NewSessionTickets on a
single connection at the moment (e.g. in a post-handshake auth scenario).
Each of those issued tickets should have the new_session_cb called, it
should go into the session cache separately and it should have a unique
id associated with it (so that they can be found individually in the
cache).

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5644)
2018-03-19 12:21:17 +00:00
Benjamin Saunders
3fa2812f32 Introduce SSL_CTX_set_stateless_cookie_{generate,verify}_cb
These functions are similar to SSL_CTX_set_cookie_{generate,verify}_cb,
but used for the application-controlled portion of TLS1.3 stateless
handshake cookies rather than entire DTLSv1 cookies.

Reviewed-by: Ben Kaduk <kaduk@mit.edu>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5463)
2018-03-12 19:34:13 +00:00
Todd Short
df0fed9aab Session Ticket app data
Adds application data into the encrypted session ticket

Reviewed-by: Paul Dale <paul.dale@oracle.com>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3802)
2018-03-12 10:31:09 +00:00
Rich Salz
cbe2964821 Consistent formatting for sizeof(foo)
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/4872)
2017-12-07 19:11:49 -05:00
Matt Caswell
f63a17d66d Convert the state machine code to use SSLfatal()
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/4778)
2017-12-04 13:31:48 +00:00
Benjamin Kaduk
1fcb4e4d52 Use atomics for SSL_CTX statistics
It is expected that SSL_CTX objects are shared across threads,
and as such we are responsible for ensuring coherent data accesses.
Aligned integer accesses ought to be atomic already on all supported
architectures, but we can be formally correct.

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Paul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/4549)
2017-10-30 10:18:09 -05:00
KaoruToda
26a7d938c9 Remove parentheses of return.
Since return is inconsistent, I removed unnecessary parentheses and
unified them.

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/4541)
2017-10-18 16:05:06 +01:00
KaoruToda
208fb891e3 Since return is inconsistent, I removed unnecessary parentheses and
unified them.
- return (0); -> return 0;
- return (1); -> return 1;
- return (-1); -> return -1;

Reviewed-by: Stephen Henson <steve@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/4500)
2017-10-09 13:17:09 +01:00
Todd Short
a84e5c9aa8 Session resume broken switching contexts
When an SSL's context is swtiched from a ticket-enabled context to
a ticket-disabled context in the servername callback, no session-id
is generated, so the session can't be resumed.

If a servername callback changes the SSL_OP_NO_TICKET option, check
to see if it's changed to disable, and whether a session ticket is
expected (i.e. the client indicated ticket support and the SSL had
tickets enabled at the time), and whether we already have a previous
session (i.e. s->hit is set).

In this case, clear the ticket-expected flag, remove any ticket data
and generate a session-id in the session.

If the SSL hit (resumed) and switched to a ticket-disabled context,
assume that the resumption was via session-id, and don't bother to
update the session.

Before this fix, the updated unit-tests in 06-sni-ticket.conf would
fail test #4 (server1 = SNI, server2 = no SNI).

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Paul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/1529)
2017-10-04 10:21:08 +10:00
Pauli
f32b0abe26 Remove unnecessary #include <openssl/lhash.h> directives.
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/4431)
2017-09-29 07:38:56 +10:00
Matt Caswell
67738645dc Add functions for getting/setting SNI/ALPN info in SSL_SESSION
Reviewed-by: Ben Kaduk <kaduk@mit.edu>
(Merged from https://github.com/openssl/openssl/pull/3926)
2017-08-31 15:03:34 +01:00
Matt Caswell
98e1d93454 Add SSL_SESSION_set_max_early_data()
Reviewed-by: Ben Kaduk <kaduk@mit.edu>
(Merged from https://github.com/openssl/openssl/pull/3926)
2017-08-31 15:02:58 +01:00
Pauli
cd420b0b1f Move the REF_PRINT support from e_os.h to internal/refcount.h.
Reviewed-by: Andy Polyakov <appro@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/4188)
2017-08-30 07:20:44 +10:00
Pauli
677963e5a4 e_os.h removal from other headers and source files.
Removed e_os.h from all bar three headers (apps/apps.h crypto/bio/bio_lcl.h and
ssl/ssl_locl.h).

Added e_os.h into the files that need it now.

Directly reference internal/nelem.h when required.

Reviewed-by: Andy Polyakov <appro@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/4188)
2017-08-30 07:20:43 +10:00
Kazuki Yamaguchi
0afca8113e Do not lookup zero-length session ID
A condition was removed by commit 1053a6e2281d; presumably it was an
unintended change. Restore the previous behavior so the get_session_cb
won't be called with zero-length session ID.

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Bernd Edlinger <bernd.edlinger@hotmail.de>
(Merged from https://github.com/openssl/openssl/pull/4236)
2017-08-25 14:36:07 +02:00
Matt Caswell
07927bedf3 Add an SSL_SESSION_dup() function
Reviewed-by: Paul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/4072)
2017-08-09 13:37:06 +10:00
Rich Salz
ae3947de09 Add a DRBG to each SSL object
Give each SSL object it's own DRBG, chained to the parent global
DRBG which is used only as a source of randomness into the per-SSL
DRBG.  This is used for all session, ticket, and pre-master secret keys.
It is NOT used for ECDH key generation which use only the global
DRBG. (Doing that without changing the API is tricky, if not impossible.)

Reviewed-by: Paul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/4050)
2017-08-03 10:24:03 -04:00
Lingmo Zhu
5bd05e5799 remove horrible pragma macro and remove __owur from SSL_CTX_add_session() declaration
Reviewed-by: Paul Dale <paul.dale@oracle.com>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/4014)
2017-08-03 10:14:46 +01:00
Lingmo Zhu
e29bb83479 Remove the obsolete misleading comment and code related to it.
The comment "The following should not return 1, otherwise, things
are very strange" is from the very first commit of OpenSSL. The
really meaning of the comment is if the identical session can be
found from internal cache after calling get_session_cb but not
found before calling get_session_cb, it is just strange.

The value 1 was originated from the old doc of SSLeay, reversed
from the actual return value of SSL_CTX_add_session().

Anyway either return value of SSL_CTX_add_session() should not
interrupt the session resumption process. So the checking of
return value of SSL_CTX_add_session() is not necessary.

Reviewed-by: Paul Dale <paul.dale@oracle.com>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/4014)
2017-08-03 10:14:46 +01:00
Matt Caswell
5159821540 Updates following review feedback of TLSv1.3 draft-21 code
Reviewed-by: Ben Kaduk <kaduk@mit.edu>
(Merged from https://github.com/openssl/openssl/pull/3852)
2017-07-07 15:02:09 +01:00
Matt Caswell
9b6a825461 Send and receive the ticket_nonce field in a NewSessionTicket
This just adds the processing for sending and receiving the newly added
ticket_nonce field. It doesn't actually use it yet.

Reviewed-by: Ben Kaduk <kaduk@mit.edu>
(Merged from https://github.com/openssl/openssl/pull/3852)
2017-07-07 15:02:09 +01:00
Todd Short
eed3ec9047 ssl_session_dup() missing ext.alpn_session
Properly copy ext.alpn_session in ssl_session_dup()
Use OPENSSL_strndup() as that's used in ssl_asn1.c

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Ben Kaduk <kaduk@mit.edu>
(Merged from https://github.com/openssl/openssl/pull/3770)
2017-06-28 14:53:23 -05:00
Matt Caswell
5a43d5119e Add SSL_SESSION_set_protocol_version()
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3670)
2017-06-21 14:45:35 +01:00
Matt Caswell
1a993d1d56 Add SSL_SESSION_set_cipher()
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3670)
2017-06-21 14:45:35 +01:00
Rich Salz
c80149d9f0 Merge Nokia copyright notice into standard
This is done with the kind permission of Nokia.

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3722)
2017-06-21 08:59:18 -04:00
Todd Short
1ee2125922 Fix ex_data and session_dup issues
Code was added in commit b3c31a65 that overwrote the last ex_data value
using CRYPTO_dup_ex_data() causing a memory leak, and potentially
confusing the ex_data dup() callback.

In ssl_session_dup(), fix error handling (properly reference and up-ref
shared data) and new-up the ex_data before calling CRYPTO_dup_ex_data();
all other structures that dup ex_data have the destination ex_data new'd
before the dup.

Fix up some of the ex_data documentation.

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3323)
2017-06-02 12:11:38 -04:00
Matt Caswell
fb34a0f4e0 Try to be more consistent about the alerts we send
We are quite inconsistent about which alerts get sent. Specifically, these
alerts should be used (normally) in the following circumstances:

SSL_AD_DECODE_ERROR = The peer sent a syntactically incorrect message
SSL_AD_ILLEGAL_PARAMETER = The peer sent a message which was syntactically
correct, but a parameter given is invalid for the context
SSL_AD_HANDSHAKE_FAILURE = The peer's messages were syntactically and
semantically correct, but the parameters provided were unacceptable to us
(e.g. because we do not support the requested parameters)
SSL_AD_INTERNAL_ERROR = We messed up (e.g. malloc failure)

The standards themselves aren't always consistent but I think the above
represents the best interpretation.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3480)
2017-05-19 08:47:08 +01:00
Matt Caswell
e586eac885 Add support for SSL_SESSION_is_resumable()
Provide a way to test whether the SSL_SESSION object can be used to resume a
sesion or not.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3008)
2017-04-26 16:42:29 +01:00
Matt Caswell
fe874d27d3 Move the extensions context codes into the public API
This move prepares for the later addition of the new custom extensions
API. The context codes have an additional "SSL_" added to their name to
ensure we don't have name clashes with other applications.

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3139)
2017-04-07 13:41:04 +01:00
Roberto Guimaraes
6aad939368 this change will prevent undefined behavior when src and dst are equal (memcpy), effectively allowing setting length only in both functions.
CLA: trivial

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/2750)
2017-03-08 09:42:29 -05:00
Matt Caswell
fcc4757823 Add a SSL_SESSION_get_max_early_data() function
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/2737)
2017-03-02 17:44:15 +00:00
Matt Caswell
f637004037 Only accept early_data if the negotiated ALPN is the same
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/2737)
2017-03-02 17:44:15 +00:00
Bernd Edlinger
fa7e9ed3d1 Remove unnecessary memset after PR #2583 avoids accessing
the uninitialized session_id now.

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/2608)
2017-02-28 09:03:54 -05:00
Matt Caswell
40f805ad92 Various style fixes following review feedback
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/2259)
2017-01-30 10:18:25 +00:00
Matt Caswell
61c3264970 Remove unneccessary comments
Now we're using an enum the values themselves are self explanatory

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/2259)
2017-01-30 10:18:25 +00:00