Updated libressl to 2.3.6 (latest stable version, 2.4.x is development).

2.3.6 - Security fix

* Correct a problem that prevents the DSA signing algorithm from
  running in constant time even if the flag BN_FLG_CONSTTIME is set.
  This issue was reported by Cesar Pereida (Aalto University), Billy
  Brumley (Tampere University of Technology), and Yuval Yarom (The
  University of Adelaide and NICTA). The fix was developed by Cesar
  Pereida. See OpenBSD 5.9 errata 11, June 6, 2016

2.3.5 - Reliability fix

* Fixed an error in libcrypto when parsing some ASN.1 elements > 16k.

2.3.4 - Security Update

* Fix multiple vulnerabilities in libcrypto relating to ASN.1 and encoding.
From OpenSSL.

* Minor build fixes

2.3.3 - OpenBSD 5.9 release branch tagged

* Reworked build scripts to better sync with OpenNTPD-portable

* Fixed broken manpage links

* Fixed an nginx compatibility issue by adding an 'install_sw' make alias

* Fixed HP-UX builds

* Changed the default configuration directory to c:\LibreSSL\ssl on Windows
  binary builds

* cert.pem has been reorganized and synced with Mozilla's certificate store

2.3.2 - Compatibility and Reliability fixes

* Changed format of LIBRESSL_VERSION_NUMBER to match that of
  OPENSSL_VERSION_NUMBER, see:
  https://wiki.openssl.org/index.php/Manual:OPENSSL_VERSION_NUMBER(3)

* Added EVP_aead_chacha20_poly1305_ietf() which matches the AEAD
  construction introduced in RFC 7539, which is different than that
  already used in TLS with EVP_aead_chacha20_poly1305()

* Avoid a potential undefined C99+ behavior due to shift overflow in
  AES_decrypt, reported by Pascal Cuoq <cuoq at trust-in-soft.com>

* More man pages converted from pod to mdoc format

* Added COMODO RSA Certification Authority and QuoVadis
  root certificates to cert.pem

* Removed Remove "C=US, O=VeriSign, Inc., OU=Class 3 Public Primary Certification
  Authority" (serial 3c:91:31:cb:1f:f6:d0:1b:0e:9a:b8:d0:44:bf:12:be) root
  certificate from cert.pem

* Added support for building nc(1) on Solaris

* Fixed GCC 5.x+ preprocessor checks, reported by Ruslan Babayev

* Improved console handling with openssl(1) on Windows

* Ensure the network stack is enabled on Windows when running
  tls_init()

* Fixed incorrect TLS certificate loading by nc(1)

* Added support for Solaris 11.3's getentropy(2) system call

* Enabled support for using NetBSD 7.0's arc4random(3) implementation

* Deprecated the SSL_OP_SINGLE_DH_USE flag by disabling its effect

* Fixes from OpenSSL 1.0.1q
- CVE-2015-3194 - NULL pointer dereference in client side certificate
                  validation.
- CVE-2015-3195 - Memory leak in PKCS7 - not reachable from TLS/SSL

* The following OpenSSL CVEs did not apply to LibreSSL
- CVE-2015-3193 - Carry propagating bug in the x86_64 Montgomery
                  squaring procedure.
- CVE-2015-3196 - Double free race condition of the identify hint
                  data.

See https://marc.info/?l=openbsd-announce&m=144925068504102

2.3.1 - ASN.1 and time handling cleanups

* ASN.1 cleanups and RFC5280 compliance fixes.

* Time representations switched from 'unsigned long' to 'time_t'. LibreSSL
  now checks if the host OS supports 64-bit time_t.

* Fixed a leak in SSL_new in the error path.

* Support always extracting the peer cipher and version with libtls.

* Added ability to check certificate validity times with libtls,
  tls_peer_cert_notbefore and tls_peer_cert_notafter.

* Changed tls_connect_servername to use the first address that resolves with
  getaddrinfo().

* Remove broken conditional EVP_CHECK_DES_KEY code (non-functional since
  initial commit in 2004).

* Fixed a memory leak and out-of-bounds access in OBJ_obj2txt, reported
  by Qualys Security.

* Fixed an up-to 7 byte overflow in RC4 when len is not a multiple of
  sizeof(RC4_CHUNK), reported by Pascal Cuoq <cuoq at trust-in-soft.com>.

* Reject too small bits value in BN_generate_prime_ex(), so that it does
  not risk becoming negative in probable_prime_dh_safe(), reported by
Franck Denis.

* Enable nc(1) builds on more platforms.

2.3.0 - SSLv3 removed, libtls API changes, portability improvements

* SSLv3 is now permanently removed from the tree.

* The libtls API is changed from the 2.2.x series.

  The read/write functions work correctly with external event
  libraries.  See the tls_init man page for examples of using libtls
  correctly in asynchronous mode.

  Client-side verification is now supported, with the client supplying
  the certificate to the server.

  Also, when using tls_connect_fds, tls_connect_socket or
  tls_accept_fds, libtls no longer implicitly closes the passed in
  sockets. The caller is responsible for closing them in this case.

* When loading a DSA key from an raw (without DH parameters) ASN.1
  serialization, perform some consistency checks on its `p' and `q'
  values, and return an error if the checks failed.

  Thanks for Georgi Guninski (guninski at guninski dot com) for
  mentioning the possibility of a weak (non prime) q value and
  providing a test case.

  See
  https://cpunks.org/pipermail/cypherpunks/2015-September/009007.html
  for a longer discussion.

* Fixed a bug in ECDH_compute_key that can lead to silent truncation
  of the result key without error. A coding error could cause software
  to use much shorter keys than intended.

* Removed support for DTLS_BAD_VER. Pre-DTLSv1 implementations are no
  longer supported.

* The engine command and parameters are removed from the openssl(1).
  Previous releases removed dynamic and builtin engine support
  already.

* SHA-0 is removed, which was withdrawn shortly after publication 20
  years ago.

* Added Certplus CA root certificate to the default cert.pem file.

* New interface OPENSSL_cpu_caps is provided that does not allow
  software to inadvertently modify cpu capability flags.
  OPENSSL_ia32cap and OPENSSL_ia32cap_loc are removed.

* The out_len argument of AEAD changed from ssize_t to size_t.

* Deduplicated DTLS code, sharing bugfixes and improvements with
  TLS.

* Converted 'nc' to use libtls for client and server operations; it is
  included in the libressl-portable distribution as an example of how
  to use the library.

(wiz)