Using ERR_LIB_* causes the error output to say 'reason(n)' instead of
the name of the sub-library in question.
Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/14152)
Our free functions should be able to deal with the case where the object
being freed is NULL. This turns out to not be quite the case for DTLS
related objects.
Fixes#13649
Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/13655)
This code started off as a copy of ssl3_write_bytes(), and the comment
was not updated with the implementation.
Reported by yangyangtiantianlonglong in #13518
Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/13566)
These two bodies should be grouped together anyway as the reason for
the call to BIO_flush() is to permit using BIO_set_ktls_ctrl_msg().
Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Ben Kaduk <kaduk@mit.edu>
(Merged from https://github.com/openssl/openssl/pull/13090)
When using KTLS, empty fragments sent as a mitigation for known-IV
weakenesses in TLS 1.0 are sent as writes of 0 bytes. The TLS header
and trailer are added to the empty fragment by the kernel.
Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Ben Kaduk <kaduk@mit.edu>
(Merged from https://github.com/openssl/openssl/pull/13090)
Since SSLfatal() doesn't take a function code any more, we drop that
argument everywhere. Also, we convert all combinations of SSLfatal()
and ERR_add_data() to an SSLfatal_data() call.
Reviewed-by: Paul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/13316)
DTLS by design ignores records/packets with bad MAC or failed AEAD tag
validation. However, recent changes to have provided cipher
implementations caused tls1_enc() to leave an entry on the error queue
for invalid GCM tags, e.g.:
800BEAEF487F0000:error::Provider routines:gcm_stream_update:cipher operation failed:providers/implementations/ciphers/ciphercommon_gcm.c:306
The BoringSSL tests check for entries on the error queue with
SSL_get_error() and so we were seeing spurious test failures
due to the additional item on the error queue. To avoid leaving
such spurious entries on the error queue, set a mark before calling
the ssl3_enc 'enc' method, and pop to that mark before ignoring
invalid packets.
Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/13251)
Many of the new types introduced by OpenSSL 3.0 have an OSSL_ prefix,
e.g., OSSL_CALLBACK, OSSL_PARAM, OSSL_ALGORITHM, OSSL_SERIALIZER.
The OPENSSL_CTX type stands out a little by using a different prefix.
For consistency reasons, this type is renamed to OSSL_LIB_CTX.
Reviewed-by: Paul Dale <paul.dale@oracle.com>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/12621)
Previously we passed it the data plus mac size. Now we just pass it the
data size. We already know the mac size.
Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/12732)
This commit just moves the TLS1 and above implementation to use the TLS
HMAC implementation in the providers.
Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/12732)
The TLS HMAC implementation should take care to calculate the MAC in
constant time in the case of MAC-Then-Encrypt where we have a variable
amount of padding.
Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/12732)
errno is only valid if ktls_read_record() fails with a negative return
value.
Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/12111)
Some applications want even all plaintext copies beeing
zeroized. However, currently plaintext residuals are kept in rbuf
within the s3 record layer.
This patch add the option SSL_OP_CLEANSE_PLAINTEXT to its friends to
optionally enable cleansing of decrypted plaintext data.
Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com>
(Merged from https://github.com/openssl/openssl/pull/12251)
We split these functions out into a separate file because we are
preparing to make this file shared between libssl and providers.
Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/12288)
For CBC ciphersuites using Mac-then-encrypt we have to be careful about
removing the MAC from the record in constant time. Currently that happens
immediately before MAC verification. Instead we move this responsibility
to the various protocol "enc" functions so that MAC removal is handled at
the same time as padding removal.
Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/12288)
Partially fixes#11209.
Before OpenSSL 3.0 in case when peer does not send close_notify,
the behaviour was to set SSL_ERROR_SYSCALL error with errno 0.
This behaviour has changed. The SSL_OP_IGNORE_UNEXPECTED_EOF restores
the old behaviour for compatibility's sake.
Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Kurt Roeckx <kurt@roeckx.be>
Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/11735)
The alignment calculation in ssl3_setup_write incorrectly results in an
alignment allowance of
(-SSL3_RT_HEADER_LENGTH) & (SSL3_ALIGN_PAYLOAD - 1) bytes. This equals 3
in almost all cases. The maximum alignment actually used in do_ssl3_write
is (SSL3_ALIGN_PAYLOAD - 1). This equals 7 bytes in almost all cases. So
there is a potential to overrun the buffer by up to 4 bytes.
Fortunately, the encryption overhead allowed for is 80 bytes which
consists of 16 bytes for the cipher block size and 64 bytes for the MAC
output. However the biggest MAC that we ever produce is HMAC-384 which is
48 bytes - so we have a headroom of 16 bytes (i.e. more than the 4 bytes
of potential overrun).
Thanks to Nagesh Hegde for reporting this.
Fixes#11766
Reviewed-by: Ben Kaduk <kaduk@mit.edu>
(Merged from https://github.com/openssl/openssl/pull/11768)
This API requests that the TLS stack generate a (TLS 1.3)
NewSessionTicket message the next time it is safe to do so (i.e., we do
not have other data pending write, which could be mid-record). For
efficiency, defer actually generating/writing the ticket until there
is other data to write, to avoid producing server-to-client traffic when
not needed.
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/11416)
HMACs used via the legacy EVP_DigestSign interface are strange in
that they use legacy codepath's which eventually (under the covers)
transform the operation into a new style EVP_MAC. This can mean the
digest in use can be a legacy one, so we need to be careful with any
digest we extract from the ctx.
Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/11511)
With KTLS, writes to an SSL connection store the application buffer
pointer directly in the 'buf' member instead of allocating a separate
buffer to hold the encrypted data. As a result,
ssl3_release_write_buffer() has to avoid freeing these 'buf' pointers.
Previously, ssl3_release_write_buffer() checked for KTLS being enabled
on the write BIO to determine if a buffer should be freed. However, a
buffer can outlive a BIO. For example, 'openssl s_time' creates new
write BIOs when reusing sessions. Since the new BIO did not have KTLS
enabled at the start of a connection, ssl3_release_write_buffer()
would incorrectly try to free the 'buf' pointer from the previous KTLS
connection. To fix, track the state of 'buf' explicitly in
SSL3_BUFFER to determine if the 'buf' should be freed or simply
cleared.
Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/10489)
Allow for encryption overhead in early DTLS size check
and send overflow if validated record is too long
Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/11096)
If we hit an EOF while reading in libssl then we will report an error
back to the application (SSL_ERROR_SYSCALL) but errno will be 0. We add
an error to the stack (which means we instead return SSL_ERROR_SSL) and
therefore give a hint as to what went wrong.
Contains a partial fix for #10880
Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com>
(Merged from https://github.com/openssl/openssl/pull/10907)
Now that libssl knows about libctx we should use it wherever we generate
a random number.
Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/10927)
The kernel will generate the MAC when transmitting the frame. Doing
so here causes the MAC to be included as part of the plain text that
the kernel MACs and encrypts. Note that this path is not taken when
using stitched cipher suites.
Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/10045)
The decryption failed alert was deprecated a long time ago. It can
provide an attacker too much information to be able to distinguish between
MAC failures and decryption failures and can lead to oracle attacks.
Instead we should always use the bad_record_mac alert for these issues.
This fixes one instance that still exists. It does not represent a
security issue in this case because it is only ever sent if the record is
publicly invalid, i.e. we have detected it is invalid without using any
secret material.
Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/10093)
Apart from public and internal header files, there is a third type called
local header files, which are located next to source files in the source
directory. Currently, they have different suffixes like
'*_lcl.h', '*_local.h', or '*_int.h'
This commit changes the different suffixes to '*_local.h' uniformly.
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/9333)
At some point in the past do_ssl3_write() used to return the number of
bytes written, or a value <= 0 on error. It now just returns a success/
error code and writes the number of bytes written to |tmpwrit|.
The SSL_MODE_RELEASE_BUFFERS code was still looking at the return code
for the number of bytes written rather than |tmpwrit|. This has the effect
that the buffers are not released when they are supposed to be.
Fixes#9490
Reviewed-by: Paul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/9505)
If we receive a KeyUpdate message (update requested) from the peer while
we are in the middle of a write, we should defer sending the responding
KeyUpdate message until after the current write is complete. We do this
by waiting to send the KeyUpdate until the next time we write and there is
no pending write data.
This does imply a subtle change in behaviour. Firstly the responding
KeyUpdate message won't be sent straight away as it is now. Secondly if
the peer sends multiple KeyUpdates without us doing any writing then we
will only send one response, as opposed to previously where we sent a
response for each KeyUpdate received.
Fixes#8677
Reviewed-by: Ben Kaduk <kaduk@mit.edu>
(Merged from https://github.com/openssl/openssl/pull/8773)
With the removal of SSLv2, the s3 structure is always allocated, so
there is little point in having it be an allocated pointer. Collapse
the ssl3_state_st structure into ssl_st and fixup any references.
This should be faster than going through an indirection and due to
fewer allocations, but I'm not seeing any significant performance
improvement; it seems to be within the margin of error in timing.
Reviewed-by: Paul Yang <yang.yang@baishancloud.com>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7888)
Matt Caswell
Richard Levitte
Richard Levitte
Pauli
Benjamin Kaduk
John Baldwin
Dr. Matthias St. Pierre
Marc
Martin Elshuber
Dr. David von Oheimb
Vadim Fedorenko
Dmitry Belyavskiy
Simon Cornish
Veres Lajos
Andrew Gallatin
Bernd Edlinger
Todd Short