Newer
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Ralf S. Engelschall
committed
_______________
Changes between 1.0.2 and 1.1.0 [xx XXX xxxx]
*) Added support for TLS extended master secret from
draft-ietf-tls-session-hash-03.txt. Thanks for Alfredo Pironti for an
initial patch which was a great help during development.
[Steve Henson]
*) All libssl internal structures have been removed from the public header
files, and the OPENSSL_NO_SSL_INTERN option has been removed (since it is
now redundant). Users should not attempt to access internal structures
directly. Instead they should use the provided API functions.
[Matt Caswell]
*) config has been changed so that by default OPENSSL_NO_DEPRECATED is used.
Access to deprecated functions can be re-enabled by running config with
"enable-deprecated". In addition applications wishing to use deprecated
functions must define OPENSSL_USE_DEPRECATED. Note that this new behaviour
will, by default, disable some transitive includes that previously existed
in the header files (e.g. ec.h will no longer, by default, include bn.h)
[Matt Caswell]
*) Added support for OCB mode. OpenSSL has been granted a patent license
compatible with the OpenSSL license for use of OCB. Details are available
at https://www.openssl.org/docs/misc/OCB-patent-grant-OpenSSL.pdf. Support
for OCB can be removed by calling config with no-ocb.
*) SSLv2 support has been removed. It still supports receiving a SSLv2
compatible client hello.
[Kurt Roeckx]
*) Increased the minimal RSA keysize from 256 to 512 bits [Rich Salz],
done while fixing the error code for the key-too-small case.
[Annie Yousar <a.yousar@informatik.hu-berlin.de>]
*) Remove various unsupported platforms:
Sony NEWS4
BEOS and BEOS_R5
NeXT
SUNOS
MPE/iX
Sinix/ReliantUNIX RM400
DGUX
NCR
Tandem
Cray
16-bit platforms such as WIN16
*) Clean up OPENSSL_NO_xxx #define's
Use setbuf() and remove OPENSSL_NO_SETVBUF_IONBF
Rename OPENSSL_SYSNAME_xxx to OPENSSL_SYS_xxx
OPENSSL_NO_EC{DH,DSA} merged into OPENSSL_NO_EC
OPENSSL_NO_RIPEMD160, OPENSSL_NO_RIPEMD merged into OPENSSL_NO_RMD160
OPENSSL_NO_FP_API merged into OPENSSL_NO_STDIO
Remove OPENSSL_NO_BIO OPENSSL_NO_BUFFER OPENSSL_NO_CHAIN_VERIFY
OPENSSL_NO_EVP OPENSSL_NO_FIPS_ERR OPENSSL_NO_HASH_COMP
OPENSSL_NO_LHASH OPENSSL_NO_OBJECT OPENSSL_NO_SPEED OPENSSL_NO_STACK
OPENSSL_NO_X509 OPENSSL_NO_X509_VERIFY
Remove MS_STATIC; it's a relic from platforms <32 bits.
Remove all but one '#ifdef undef' which is to be looked at.
[Rich Salz]
*) Experimental support for a new, fast, unbiased prime candidate generator,
bn_probable_prime_dh_coprime(). Not currently used by any prime generator.
[Felix Laurie von Massenbach <felix@erbridge.co.uk>]
Martin Kaiser
committed
*) New output format NSS in the sess_id command line tool. This allows
exporting the session id and the master key in NSS keylog format.
[Martin Kaiser <martin@kaiser.cx>]
*) Harmonize version and its documentation. -f flag is used to display
compilation flags.
[mancha <mancha1@zoho.com>]
*) Fix eckey_priv_encode so it immediately returns an error upon a failure
in i2d_ECPrivateKey.
[mancha <mancha1@zoho.com>]
*) Fix some double frees. These are not thought to be exploitable.
[mancha <mancha1@zoho.com>]
*) A missing bounds check in the handling of the TLS heartbeat extension
can be used to reveal up to 64k of memory to a connected client or
server.
Thanks for Neel Mehta of Google Security for discovering this bug and to
Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
preparing the fix (CVE-2014-0160)
[Adam Langley, Bodo Moeller]
*) Fix for the attack described in the paper "Recovering OpenSSL
ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
by Yuval Yarom and Naomi Benger. Details can be obtained from:
http://eprint.iacr.org/2014/140
Thanks to Yuval Yarom and Naomi Benger for discovering this
flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
[Yuval Yarom and Naomi Benger]
*) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
this fixes a limitation in previous versions of OpenSSL.
*) Experimental encrypt-then-mac support.
Experimental support for encrypt then mac from
draft-gutmann-tls-encrypt-then-mac-02.txt
To enable it set the appropriate extension number (0x42 for the test
server) using e.g. -DTLSEXT_TYPE_encrypt_then_mac=0x42
For non-compliant peers (i.e. just about everything) this should have no
effect.
WARNING: EXPERIMENTAL, SUBJECT TO CHANGE.
*) Add EVP support for key wrapping algorithms, to avoid problems with
existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
algorithms and include tests cases.
[Steve Henson]
*) Extend CMS code to support RSA-PSS signatures and RSA-OAEP for
enveloped data.
[Steve Henson]
*) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
MGF1 digest and OAEP label.
[Steve Henson]
*) Make openssl verify return errors.
[Chris Palmer <palmer@google.com> and Ben Laurie]
Dr. Stephen Henson
committed
*) New function ASN1_TIME_diff to calculate the difference between two
ASN1_TIME structures or one structure and the current time.
[Steve Henson]
*) Update fips_test_suite to support multiple command line options. New
test to induce all self test errors in sequence and check expected
failures.
[Steve Henson]
*) Add FIPS_{rsa,dsa,ecdsa}_{sign,verify} functions which digest and
sign or verify all in one operation.
[Steve Henson]
*) Add fips_algvs: a multicall fips utility incorporating all the algorithm
test programs and fips_test_suite. Includes functionality to parse
the minimal script output of fipsalgest.pl directly.
[Steve Henson]
*) Add authorisation parameter to FIPS_module_mode_set().
[Steve Henson]
*) Add FIPS selftest for ECDH algorithm using P-224 and B-233 curves.
[Steve Henson]
*) Use separate DRBG fields for internal and external flags. New function
FIPS_drbg_health_check() to perform on demand health checking. Add
generation tests to fips_test_suite with reduced health check interval to
demonstrate periodic health checking. Add "nodh" option to
fips_test_suite to skip very slow DH test.
[Steve Henson]
*) New function FIPS_get_cipherbynid() to lookup FIPS supported ciphers
based on NID.
[Steve Henson]
*) More extensive health check for DRBG checking many more failure modes.
New function FIPS_selftest_drbg_all() to handle every possible DRBG
combination: call this in fips_test_suite.
[Steve Henson]
Dr. Stephen Henson
committed
*) Add support for Dual EC DRBG from SP800-90. Update DRBG algorithm test
and POST to handle Dual EC cases.
[Steve Henson]
*) Add support for canonical generation of DSA parameter 'g'. See
FIPS 186-3 A.2.3.
Dr. Stephen Henson
committed
*) Add support for HMAC DRBG from SP800-90. Update DRBG algorithm test and
POST to handle HMAC cases.
*) Add functions FIPS_module_version() and FIPS_module_version_text()
to return numerical and string versions of the FIPS module number.
*) Rename FIPS_mode_set and FIPS_mode to FIPS_module_mode_set and
FIPS_module_mode. FIPS_mode and FIPS_mode_set will be implemented
outside the validated module in the FIPS capable OpenSSL.
[Steve Henson]
*) Minor change to DRBG entropy callback semantics. In some cases
there is no multiple of the block length between min_len and
max_len. Allow the callback to return more than max_len bytes
of entropy but discard any extra: it is the callback's responsibility
to ensure that the extra data discarded does not impact the
requested amount of entropy.
[Steve Henson]
*) Add PRNG security strength checks to RSA, DSA and ECDSA using
information in FIPS186-3, SP800-57 and SP800-131A.
[Steve Henson]
*) CCM support via EVP. Interface is very similar to GCM case except we
must supply all data in one chunk (i.e. no update, final) and the
message length must be supplied if AAD is used. Add algorithm test
support.
*) Initial version of POST overhaul. Add POST callback to allow the status
of POST to be monitored and/or failures induced. Modify fips_test_suite
to use callback. Always run all selftests even if one fails.
[Steve Henson]
Dr. Stephen Henson
committed
*) XTS support including algorithm test driver in the fips_gcmtest program.
Note: this does increase the maximum key length from 32 to 64 bytes but
there should be no binary compatibility issues as existing applications
will never use XTS mode.
*) Extensive reorganisation of FIPS PRNG behaviour. Remove all dependencies
to OpenSSL RAND code and replace with a tiny FIPS RAND API which also
performs algorithm blocking for unapproved PRNG types. Also do not
set PRNG type in FIPS_mode_set(): leave this to the application.
Add default OpenSSL DRBG handling: sets up FIPS PRNG and seeds with
the standard OpenSSL PRNG: set additional data to a date time vector.
[Steve Henson]
*) Rename old X9.31 PRNG functions of the form FIPS_rand* to FIPS_x931*.
This shouldn't present any incompatibility problems because applications
shouldn't be using these directly and any that are will need to rethink
anyway as the X9.31 PRNG is now deprecated by FIPS 140-2
[Steve Henson]
*) Extensive self tests and health checking required by SP800-90 DRBG.
Remove strength parameter from FIPS_drbg_instantiate and always
instantiate at maximum supported strength.
[Steve Henson]
*) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
[Steve Henson]
*) New algorithm test program fips_dhvs to handle DH primitives only testing.
[Steve Henson]
*) New function DH_compute_key_padded() to compute a DH key and pad with
leading zeroes if needed: this complies with SP800-56A et al.
[Steve Henson]
*) Initial implementation of SP800-90 DRBGs for Hash and CTR. Not used by
anything, incomplete, subject to change and largely untested at present.
[Steve Henson]
*) Modify fipscanisteronly build option to only build the necessary object
files by filtering FIPS_EX_OBJ through a perl script in crypto/Makefile.
[Steve Henson]
*) Add experimental option FIPSSYMS to give all symbols in
fipscanister.o and FIPS or fips prefix. This will avoid
conflicts with future versions of OpenSSL. Add perl script
util/fipsas.pl to preprocess assembly language source files
and rename any affected symbols.
*) Add selftest checks and algorithm block of non-fips algorithms in
FIPS mode. Remove DES2 from selftests.
[Steve Henson]
Dr. Stephen Henson
committed
*) Add ECDSA code to fips module. Add tiny fips_ecdsa_check to just
return internal method without any ENGINE dependencies. Add new
tiny fips sign and verify functions.
Dr. Stephen Henson
committed
[Steve Henson]
*) New build option no-ec2m to disable characteristic 2 code.
[Steve Henson]
*) New build option "fipscanisteronly". This only builds fipscanister.o
and (currently) associated fips utilities. Uses the file Makefile.fips
instead of Makefile.org as the prototype.
[Steve Henson]
Dr. Stephen Henson
committed
*) Add some FIPS mode restrictions to GCM. Add internal IV generator.
Update fips_gcmtest to use IV generator.
[Steve Henson]
Dr. Stephen Henson
committed
*) Initial, experimental EVP support for AES-GCM. AAD can be input by
setting output buffer to NULL. The *Final function must be
called although it will not retrieve any additional data. The tag
can be set or retrieved with a ctrl. The IV length is by default 12
bytes (96 bits) but can be set to an alternative value. If the IV
length exceeds the maximum IV length (currently 16 bytes) it cannot be
set before the key.
[Steve Henson]
Dr. Stephen Henson
committed
*) New flag in ciphers: EVP_CIPH_FLAG_CUSTOM_CIPHER. This means the
underlying do_cipher function handles all cipher semantics itself
including padding and finalisation. This is useful if (for example)
an ENGINE cipher handles block padding itself. The behaviour of
do_cipher is subtly changed if this flag is set: the return value
is the number of characters written to the output buffer (zero is
no longer an error code) or a negative error code. Also if the
Dr. Stephen Henson
committed
input buffer is NULL and length 0 finalisation should be performed.
Dr. Stephen Henson
committed
[Steve Henson]
*) If a candidate issuer certificate is already part of the constructed
path ignore it: new debug notification X509_V_ERR_PATH_LOOP for this case.
[Steve Henson]
*) Improve forward-security support: add functions
void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx, int (*cb)(SSL *ssl, int is_forward_secure))
void SSL_set_not_resumable_session_callback(SSL *ssl, int (*cb)(SSL *ssl, int is_forward_secure))
for use by SSL/TLS servers; the callback function will be called whenever a
new session is created, and gets to decide whether the session may be
cached to make it resumable (return 0) or not (return 1). (As by the
SSL/TLS protocol specifications, the session_id sent by the server will be
empty to indicate that the session is not resumable; also, the server will
not generate RFC 4507 (RFC 5077) session tickets.)
A simple reasonable callback implementation is to return is_forward_secure.
This parameter will be set to 1 or 0 depending on the ciphersuite selected
by the SSL/TLS server library, indicating whether it can provide forward
security.
[Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
*) New -verify_name option in command line utilities to set verification
parameters by name.
[Steve Henson]
*) Initial CMAC implementation. WARNING: EXPERIMENTAL, API MAY CHANGE.
Add CMAC pkey methods.
[Steve Henson]
*) Experimental renegotiation in s_server -www mode. If the client
browses /reneg connection is renegotiated. If /renegcert it is
renegotiated requesting a certificate.
[Steve Henson]
*) Add an "external" session cache for debugging purposes to s_server. This
should help trace issues which normally are only apparent in deployed
multi-process servers.
[Steve Henson]
*) Extensive audit of libcrypto with DEBUG_UNUSED. Fix many cases where
return value is ignored. NB. The functions RAND_add(), RAND_seed(),
BIO_set_cipher() and some obscure PEM functions were changed so they
can now return an error. The RAND changes required a change to the
RAND_METHOD structure.
[Steve Henson]
*) New macro __owur for "OpenSSL Warn Unused Result". This makes use of
a gcc attribute to warn if the result of a function is ignored. This
is enable if DEBUG_UNUSED is set. Add to several functions in evp.h
whose return value is often ignored.
[Steve Henson]
Andy Polyakov
committed
*) Facilitate "universal" ARM builds targeting range of ARM ISAs, e.g.
ARMv5 through ARMv8, as opposite to "locking" it to single one.
So far those who have to target multiple plaforms would compromise
and argue that binary targeting say ARMv5 would still execute on
ARMv8. "Universal" build resolves this compromise by providing
near-optimal performance even on newer platforms.
[Andy Polyakov]
*) Accelerated NIST P-256 elliptic curve implementation for x86_64
(other platforms pending).
[Shay Gueron & Vlad Krasnov (Intel Corp), Andy Polyakov]
*) Add support for the SignedCertificateTimestampList certificate and
OCSP response extensions from RFC6962.
[Rob Stradling]
*) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
for corner cases. (Certain input points at infinity could lead to
bogus results, with non-infinity inputs mapped to infinity too.)
[Bodo Moeller]
*) Initial support for PowerISA 2.0.7, first implemented in POWER8.
This covers AES, SHA256/512 and GHASH. "Initial" means that most
common cases are optimized and there still is room for further
improvements. Vector Permutation AES for Altivec is also added.
[Andy Polyakov]
*) Add support for little-endian ppc64 Linux target.
[Marcelo Cerri (IBM)]
*) Initial support for AMRv8 ISA crypto extensions. This covers AES,
SHA1, SHA256 and GHASH. "Initial" means that most common cases
are optimized and there still is room for further improvements.
Both 32- and 64-bit modes are supported.
[Andy Polyakov, Ard Biesheuvel (Linaro)]
*) Improved ARMv7 NEON support.
[Andy Polyakov]
*) Support for SPARC Architecture 2011 crypto extensions, first
implemented in SPARC T4. This covers AES, DES, Camellia, SHA1,
SHA256/512, MD5, GHASH and modular exponentiation.
[Andy Polyakov, David Miller]
*) Accelerated modular exponentiation for Intel processors, a.k.a.
RSAZ.
*) Support for new and upcoming Intel processors, including AVX2,
BMI and SHA ISA extensions. This includes additional "stitched"
implementations, AESNI-SHA256 and GCM, and multi-buffer support
for TLS encrypt.
This work was sponsored by Intel Corp.
[Andy Polyakov]
*) Support for DTLS 1.2. This adds two sets of DTLS methods: DTLS_*_method()
supports both DTLS 1.2 and 1.0 and should use whatever version the peer
supports and DTLSv1_2_*_method() which supports DTLS 1.2 only.
[Steve Henson]
*) Use algorithm specific chains in SSL_CTX_use_certificate_chain_file():
this fixes a limiation in previous versions of OpenSSL.
[Steve Henson]
*) Extended RSA OAEP support via EVP_PKEY API. Options to specify digest,
MGF1 digest and OAEP label.
[Steve Henson]
*) Add EVP support for key wrapping algorithms, to avoid problems with
existing code the flag EVP_CIPHER_CTX_WRAP_ALLOW has to be set in
the EVP_CIPHER_CTX or an error is returned. Add AES and DES3 wrap
algorithms and include tests cases.
[Steve Henson]
*) Add functions to allocate and set the fields of an ECDSA_METHOD
structure.
[Douglas E. Engert, Steve Henson]
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*) New functions OPENSSL_gmtime_diff and ASN1_TIME_diff to find the
difference in days and seconds between two tm or ASN1_TIME structures.
[Steve Henson]
*) Add -rev test option to s_server to just reverse order of characters
received by client and send back to server. Also prints an abbreviated
summary of the connection parameters.
[Steve Henson]
*) New option -brief for s_client and s_server to print out a brief summary
of connection parameters.
[Steve Henson]
*) Add callbacks for arbitrary TLS extensions.
[Trevor Perrin <trevp@trevp.net> and Ben Laurie]
*) New option -crl_download in several openssl utilities to download CRLs
from CRLDP extension in certificates.
[Steve Henson]
*) New options -CRL and -CRLform for s_client and s_server for CRLs.
[Steve Henson]
*) New function X509_CRL_diff to generate a delta CRL from the difference
of two full CRLs. Add support to "crl" utility.
[Steve Henson]
*) New functions to set lookup_crls function and to retrieve
X509_STORE from X509_STORE_CTX.
[Steve Henson]
*) Print out deprecated issuer and subject unique ID fields in
certificates.
[Steve Henson]
*) Extend OCSP I/O functions so they can be used for simple general purpose
HTTP as well as OCSP. New wrapper function which can be used to download
CRLs using the OCSP API.
[Steve Henson]
*) Delegate command line handling in s_client/s_server to SSL_CONF APIs.
[Steve Henson]
*) SSL_CONF* functions. These provide a common framework for application
configuration using configuration files or command lines.
[Steve Henson]
*) SSL/TLS tracing code. This parses out SSL/TLS records using the
message callback and prints the results. Needs compile time option
"enable-ssl-trace". New options to s_client and s_server to enable
tracing.
[Steve Henson]
*) New ctrl and macro to retrieve supported points extensions.
Print out extension in s_server and s_client.
[Steve Henson]
*) New functions to retrieve certificate signature and signature
OID NID.
[Steve Henson]
*) Add functions to retrieve and manipulate the raw cipherlist sent by a
client to OpenSSL.
[Steve Henson]
*) New Suite B modes for TLS code. These use and enforce the requirements
of RFC6460: restrict ciphersuites, only permit Suite B algorithms and
only use Suite B curves. The Suite B modes can be set by using the
strings "SUITEB128", "SUITEB192" or "SUITEB128ONLY" for the cipherstring.
[Steve Henson]
*) New chain verification flags for Suite B levels of security. Check
algorithms are acceptable when flags are set in X509_verify_cert.
[Steve Henson]
*) Make tls1_check_chain return a set of flags indicating checks passed
by a certificate chain. Add additional tests to handle client
certificates: checks for matching certificate type and issuer name
comparison.
[Steve Henson]
*) If an attempt is made to use a signature algorithm not in the peer
preference list abort the handshake. If client has no suitable
signature algorithms in response to a certificate request do not
use the certificate.
[Steve Henson]
*) If server EC tmp key is not in client preference list abort handshake.
[Steve Henson]
*) Add support for certificate stores in CERT structure. This makes it
possible to have different stores per SSL structure or one store in
the parent SSL_CTX. Include distint stores for certificate chain
verification and chain building. New ctrl SSL_CTRL_BUILD_CERT_CHAIN
to build and store a certificate chain in CERT structure: returing
an error if the chain cannot be built: this will allow applications
to test if a chain is correctly configured.
Note: if the CERT based stores are not set then the parent SSL_CTX
store is used to retain compatibility with existing behaviour.
[Steve Henson]
*) New function ssl_set_client_disabled to set a ciphersuite disabled
mask based on the current session, check mask when sending client
hello and checking the requested ciphersuite.
[Steve Henson]
*) New ctrls to retrieve and set certificate types in a certificate
request message. Print out received values in s_client. If certificate
types is not set with custom values set sensible values based on
supported signature algorithms.
[Steve Henson]
*) Support for distinct client and server supported signature algorithms.
[Steve Henson]
*) Add certificate callback. If set this is called whenever a certificate
is required by client or server. An application can decide which
certificate chain to present based on arbitrary criteria: for example
supported signature algorithms. Add very simple example to s_server.
This fixes many of the problems and restrictions of the existing client
certificate callback: for example you can now clear an existing
certificate and specify the whole chain.
[Steve Henson]
*) Add new "valid_flags" field to CERT_PKEY structure which determines what
the certificate can be used for (if anything). Set valid_flags field
in new tls1_check_chain function. Simplify ssl_set_cert_masks which used
to have similar checks in it.
Add new "cert_flags" field to CERT structure and include a "strict mode".
This enforces some TLS certificate requirements (such as only permitting
certificate signature algorithms contained in the supported algorithms
extension) which some implementations ignore: this option should be used
with caution as it could cause interoperability issues.
[Steve Henson]
*) Update and tidy signature algorithm extension processing. Work out
shared signature algorithms based on preferences and peer algorithms
and print them out in s_client and s_server. Abort handshake if no
shared signature algorithms.
[Steve Henson]
*) Add new functions to allow customised supported signature algorithms
for SSL and SSL_CTX structures. Add options to s_client and s_server
to support them.
[Steve Henson]
*) New function SSL_certs_clear() to delete all references to certificates
from an SSL structure. Before this once a certificate had been added
it couldn't be removed.
[Steve Henson]
*) Integrate hostname, email address and IP address checking with certificate
verification. New verify options supporting checking in opensl utility.
[Steve Henson]
*) Fixes and wildcard matching support to hostname and email checking
functions. Add manual page.
[Florian Weimer (Red Hat Product Security Team)]
*) New functions to check a hostname email or IP address against a
certificate. Add options x509 utility to print results of checks against
a certificate.
[Steve Henson]
*) Fix OCSP checking.
[Rob Stradling <rob.stradling@comodo.com> and Ben Laurie]
*) Initial experimental support for explicitly trusted non-root CAs.
OpenSSL still tries to build a complete chain to a root but if an
intermediate CA has a trust setting included that is used. The first
setting is used: whether to trust (e.g., -addtrust option to the x509
utility) or reject.
[Steve Henson]
*) Add -trusted_first option which attempts to find certificates in the
trusted store even if an untrusted chain is also supplied.
[Steve Henson]
*) MIPS assembly pack updates: support for MIPS32r2 and SmartMIPS ASE,
platform support for Linux and Android.
[Andy Polyakov]
*) Support for linux-x32, ILP32 environment in x86_64 framework.
[Andy Polyakov]
*) Experimental multi-implementation support for FIPS capable OpenSSL.
When in FIPS mode the approved implementations are used as normal,
when not in FIPS mode the internal unapproved versions are used instead.
This means that the FIPS capable OpenSSL isn't forced to use the
(often lower performance) FIPS implementations outside FIPS mode.
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[Steve Henson]
*) Transparently support X9.42 DH parameters when calling
PEM_read_bio_DHparameters. This means existing applications can handle
the new parameter format automatically.
[Steve Henson]
*) Initial experimental support for X9.42 DH parameter format: mainly
to support use of 'q' parameter for RFC5114 parameters.
[Steve Henson]
*) Add DH parameters from RFC5114 including test data to dhtest.
[Steve Henson]
*) Support for automatic EC temporary key parameter selection. If enabled
the most preferred EC parameters are automatically used instead of
hardcoded fixed parameters. Now a server just has to call:
SSL_CTX_set_ecdh_auto(ctx, 1) and the server will automatically
support ECDH and use the most appropriate parameters.
[Steve Henson]
*) Enhance and tidy EC curve and point format TLS extension code. Use
static structures instead of allocation if default values are used.
New ctrls to set curves we wish to support and to retrieve shared curves.
Print out shared curves in s_server. New options to s_server and s_client
to set list of supported curves.
[Steve Henson]
*) New ctrls to retrieve supported signature algorithms and
supported curve values as an array of NIDs. Extend openssl utility
to print out received values.
[Steve Henson]
*) Add new APIs EC_curve_nist2nid and EC_curve_nid2nist which convert
between NIDs and the more common NIST names such as "P-256". Enhance
ecparam utility and ECC method to recognise the NIST names for curves.
[Steve Henson]
*) Enhance SSL/TLS certificate chain handling to support different
chains for each certificate instead of one chain in the parent SSL_CTX.
[Steve Henson]
*) Support for fixed DH ciphersuite client authentication: where both
server and client use DH certificates with common parameters.
[Steve Henson]
*) Support for fixed DH ciphersuites: those requiring DH server
certificates.
[Steve Henson]
*) New function i2d_re_X509_tbs for re-encoding the TBS portion of
the certificate.
Note: Related 1.0.2-beta specific macros X509_get_cert_info,
X509_CINF_set_modified, X509_CINF_get_issuer, X509_CINF_get_extensions and
X509_CINF_get_signature were reverted post internal team review.
Changes between 1.0.1j and 1.0.1k [xx XXX xxxx]
*) Abort handshake if server key exchange message is omitted for ephemeral
ECDH ciphersuites.
Thanks to Karthikeyan Bhargavan of the PROSECCO team at INRIA for
reporting this issue.
*) Remove non-export ephemeral RSA code on client and server. This code
violated the TLS standard by allowing the use of temporary RSA keys in
non-export ciphersuites and could be used by a server to effectively
downgrade the RSA key length used to a value smaller than the server
certificate. Thanks for Karthikeyan Bhargavan of the PROSECCO team at
INRIA or reporting this issue.
(CVE-2015-0204)
[Steve Henson]
*) Ensure that the session ID context of an SSL is updated when its
SSL_CTX is updated via SSL_set_SSL_CTX.
The session ID context is typically set from the parent SSL_CTX,
and can vary with the CTX.
[Adam Langley]
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*) Fix various certificate fingerprint issues.
By using non-DER or invalid encodings outside the signed portion of a
certificate the fingerprint can be changed without breaking the signature.
Although no details of the signed portion of the certificate can be changed
this can cause problems with some applications: e.g. those using the
certificate fingerprint for blacklists.
1. Reject signatures with non zero unused bits.
If the BIT STRING containing the signature has non zero unused bits reject
the signature. All current signature algorithms require zero unused bits.
2. Check certificate algorithm consistency.
Check the AlgorithmIdentifier inside TBS matches the one in the
certificate signature. NB: this will result in signature failure
errors for some broken certificates.
Thanks to Konrad Kraszewski from Google for reporting this issue.
3. Check DSA/ECDSA signatures use DER.
Reencode DSA/ECDSA signatures and compare with the original received
signature. Return an error if there is a mismatch.
This will reject various cases including garbage after signature
(thanks to Antti Karjalainen and Tuomo Untinen from the Codenomicon CROSS
program for discovering this case) and use of BER or invalid ASN.1 INTEGERs
(negative or with leading zeroes).
Further analysis was conducted and fixes were developed by Stephen Henson
of the OpenSSL core team.
(CVE-2014-8275)
[Steve Henson]
*) Do not resume sessions on the server if the negotiated protocol
version does not match the session's version. Resuming with a different
version, while not strictly forbidden by the RFC, is of questionable
sanity and breaks all known clients.
[David Benjamin, Emilia Käsper]
*) Tighten handling of the ChangeCipherSpec (CCS) message: reject
early CCS messages during renegotiation. (Note that because
renegotiation is encrypted, this early CCS was not exploitable.)
[Emilia Käsper]
*) Tighten client-side session ticket handling during renegotiation:
ensure that the client only accepts a session ticket if the server sends
the extension anew in the ServerHello. Previously, a TLS client would
reuse the old extension state and thus accept a session ticket if one was
announced in the initial ServerHello.
Similarly, ensure that the client requires a session ticket if one
was advertised in the ServerHello. Previously, a TLS client would
ignore a missing NewSessionTicket message.
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Changes between 1.0.1i and 1.0.1j [15 Oct 2014]
*) SRTP Memory Leak.
A flaw in the DTLS SRTP extension parsing code allows an attacker, who
sends a carefully crafted handshake message, to cause OpenSSL to fail
to free up to 64k of memory causing a memory leak. This could be
exploited in a Denial Of Service attack. This issue affects OpenSSL
1.0.1 server implementations for both SSL/TLS and DTLS regardless of
whether SRTP is used or configured. Implementations of OpenSSL that
have been compiled with OPENSSL_NO_SRTP defined are not affected.
The fix was developed by the OpenSSL team.
(CVE-2014-3513)
[OpenSSL team]
*) Session Ticket Memory Leak.
When an OpenSSL SSL/TLS/DTLS server receives a session ticket the
integrity of that ticket is first verified. In the event of a session
ticket integrity check failing, OpenSSL will fail to free memory
causing a memory leak. By sending a large number of invalid session
tickets an attacker could exploit this issue in a Denial Of Service
attack.
(CVE-2014-3567)
[Steve Henson]
*) Build option no-ssl3 is incomplete.
When OpenSSL is configured with "no-ssl3" as a build option, servers
could accept and complete a SSL 3.0 handshake, and clients could be
configured to send them.
(CVE-2014-3568)
[Akamai and the OpenSSL team]
*) Add support for TLS_FALLBACK_SCSV.
Client applications doing fallback retries should call
SSL_set_mode(s, SSL_MODE_SEND_FALLBACK_SCSV).
(CVE-2014-3566)
[Adam Langley, Bodo Moeller]
*) Add additional DigestInfo checks.
Reencode DigestInto in DER and check against the original when
verifying RSA signature: this will reject any improperly encoded
DigestInfo structures.
Note: this is a precautionary measure and no attacks are currently known.
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Changes between 1.0.1h and 1.0.1i [6 Aug 2014]
*) Fix SRP buffer overrun vulnerability. Invalid parameters passed to the
SRP code can be overrun an internal buffer. Add sanity check that
g, A, B < N to SRP code.
Thanks to Sean Devlin and Watson Ladd of Cryptography Services, NCC
Group for discovering this issue.
(CVE-2014-3512)
[Steve Henson]
*) A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate
TLS 1.0 instead of higher protocol versions when the ClientHello message
is badly fragmented. This allows a man-in-the-middle attacker to force a
downgrade to TLS 1.0 even if both the server and the client support a
higher protocol version, by modifying the client's TLS records.
Thanks to David Benjamin and Adam Langley (Google) for discovering and
researching this issue.
(CVE-2014-3511)
[David Benjamin]
*) OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject
to a denial of service attack. A malicious server can crash the client
with a null pointer dereference (read) by specifying an anonymous (EC)DH
ciphersuite and sending carefully crafted handshake messages.
Thanks to Felix Gröbert (Google) for discovering and researching this
issue.
(CVE-2014-3510)
[Emilia Käsper]
*) By sending carefully crafted DTLS packets an attacker could cause openssl
to leak memory. This can be exploited through a Denial of Service attack.
Thanks to Adam Langley for discovering and researching this issue.
(CVE-2014-3507)
[Adam Langley]
*) An attacker can force openssl to consume large amounts of memory whilst
processing DTLS handshake messages. This can be exploited through a
Denial of Service attack.
Thanks to Adam Langley for discovering and researching this issue.
(CVE-2014-3506)
[Adam Langley]
*) An attacker can force an error condition which causes openssl to crash
whilst processing DTLS packets due to memory being freed twice. This
can be exploited through a Denial of Service attack.
Thanks to Adam Langley and Wan-Teh Chang for discovering and researching
this issue.
(CVE-2014-3505)
[Adam Langley]
*) If a multithreaded client connects to a malicious server using a resumed
session and the server sends an ec point format extension it could write
up to 255 bytes to freed memory.
Thanks to Gabor Tyukasz (LogMeIn Inc) for discovering and researching this
issue.
(CVE-2014-3509)
[Gabor Tyukasz]
*) A malicious server can crash an OpenSSL client with a null pointer
dereference (read) by specifying an SRP ciphersuite even though it was not
properly negotiated with the client. This can be exploited through a
Denial of Service attack.
Thanks to Joonas Kuorilehto and Riku Hietamäki (Codenomicon) for
discovering and researching this issue.
(CVE-2014-5139)
[Steve Henson]
*) A flaw in OBJ_obj2txt may cause pretty printing functions such as
X509_name_oneline, X509_name_print_ex et al. to leak some information
from the stack. Applications may be affected if they echo pretty printing
output to the attacker.
Thanks to Ivan Fratric (Google) for discovering this issue.
(CVE-2014-3508)
[Emilia Käsper, and Steve Henson]
*) Fix ec_GFp_simple_points_make_affine (thus, EC_POINTs_mul etc.)
for corner cases. (Certain input points at infinity could lead to
bogus results, with non-infinity inputs mapped to infinity too.)
[Bodo Moeller]
Changes between 1.0.1g and 1.0.1h [5 Jun 2014]
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*) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted
handshake can force the use of weak keying material in OpenSSL
SSL/TLS clients and servers.
Thanks to KIKUCHI Masashi (Lepidum Co. Ltd.) for discovering and
researching this issue. (CVE-2014-0224)
[KIKUCHI Masashi, Steve Henson]
*) Fix DTLS recursion flaw. By sending an invalid DTLS handshake to an
OpenSSL DTLS client the code can be made to recurse eventually crashing
in a DoS attack.
Thanks to Imre Rad (Search-Lab Ltd.) for discovering this issue.
(CVE-2014-0221)
[Imre Rad, Steve Henson]
*) Fix DTLS invalid fragment vulnerability. A buffer overrun attack can
be triggered by sending invalid DTLS fragments to an OpenSSL DTLS
client or server. This is potentially exploitable to run arbitrary
code on a vulnerable client or server.
Thanks to Jüri Aedla for reporting this issue. (CVE-2014-0195)
[Jüri Aedla, Steve Henson]
*) Fix bug in TLS code where clients enable anonymous ECDH ciphersuites
are subject to a denial of service attack.
Thanks to Felix Gröbert and Ivan Fratric at Google for discovering
this issue. (CVE-2014-3470)
[Felix Gröbert, Ivan Fratric, Steve Henson]
*) Harmonize version and its documentation. -f flag is used to display
compilation flags.
[mancha <mancha1@zoho.com>]
*) Fix eckey_priv_encode so it immediately returns an error upon a failure
in i2d_ECPrivateKey.
[mancha <mancha1@zoho.com>]
*) Fix some double frees. These are not thought to be exploitable.
[mancha <mancha1@zoho.com>]
Changes between 1.0.1f and 1.0.1g [7 Apr 2014]
*) A missing bounds check in the handling of the TLS heartbeat extension
can be used to reveal up to 64k of memory to a connected client or
server.
Thanks for Neel Mehta of Google Security for discovering this bug and to
Adam Langley <agl@chromium.org> and Bodo Moeller <bmoeller@acm.org> for
preparing the fix (CVE-2014-0160)
[Adam Langley, Bodo Moeller]
*) Fix for the attack described in the paper "Recovering OpenSSL
ECDSA Nonces Using the FLUSH+RELOAD Cache Side-channel Attack"
by Yuval Yarom and Naomi Benger. Details can be obtained from:
http://eprint.iacr.org/2014/140
Thanks to Yuval Yarom and Naomi Benger for discovering this
flaw and to Yuval Yarom for supplying a fix (CVE-2014-0076)
[Yuval Yarom and Naomi Benger]
*) TLS pad extension: draft-agl-tls-padding-03
Workaround for the "TLS hang bug" (see FAQ and PR#2771): if the
TLS client Hello record length value would otherwise be > 255 and
less that 512 pad with a dummy extension containing zeroes so it
is at least 512 bytes long.
[Adam Langley, Steve Henson]
Changes between 1.0.1e and 1.0.1f [6 Jan 2014]
*) Fix for TLS record tampering bug. A carefully crafted invalid