OpenSSL CHANGES
_______________
- Changes between 0.9.8g and 0.9.9 [xx XXX xxxx]
+ Changes between 1.0.1 and 1.1.0 [xx XXX xxxx]
- *) Not all of this is true any longer.
- Will have to be updated to reflect all subsequent changes to cryptlib.c.
- --bodo
+ *) 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]
- To support arbitrarily-typed thread IDs, deprecate the existing
- type-specific APIs for a general purpose CRYPTO_THREADID
- interface. Applications can choose the thread ID
- callback type it wishes to register, as before;
+ *) 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]
- void CRYPTO_set_id_callback(unsigned long (*func)(void));
- void CRYPTO_set_idptr_callback(void *(*func)(void));
+ *) Add SRP support.
+ [Tom Wu <tjw@cs.stanford.edu> and Ben Laurie]
- but retrieval, copies, and comparisons of thread IDs are via
- type-independent interfaces;
+ *) Add ECDH code to fips module and fips_ecdhvs for primitives only testing.
+ [Steve Henson]
- void CRYPTO_THREADID_set(CRYPTO_THREADID *id);
- void CRYPTO_THREADID_cmp(const CRYPTO_THREADID *id1,
- const CRYPTO_THREADID *id2);
- void CRYPTO_THREADID_cpy(CRYPTO_THREADID *dst,
- const CRYPTO_THREADID *src);
+ *) New algorithm test program fips_dhvs to handle DH primitives only testing.
+ [Steve Henson]
- Also, for code that needs a thread ID "value" for use in
- hash-tables or logging, a "hash" is available by;
+ *) 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]
- unsigned long CRYPTO_THREADID_hash(const CRYPTO_THREADID *id);
+ *) 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]
- This hash value is likely to be the thread ID anyway, but
- otherwise it will be unique if possible or as collision-free as
- possible if uniqueness can't be guaranteed on the target
- architecture.
+ *) 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]
- The following functions are deprecated;
- unsigned long (*CRYPTO_get_id_callback(void))(void);
- unsigned long CRYPTO_thread_id(void);
+ *) 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.
+ [Steve Henson]
- As a consequence of the above, there are similar deprecations of
- BN_BLINDING functions in favour of CRYPTO_THREADID-based
- alternatives;
+ *) Add selftest checks and algorithm block of non-fips algorithms in
+ FIPS mode. Remove DES2 from selftests.
+ [Steve Henson]
- #ifndef OPENSSL_NO_DEPRECATED
- unsigned long BN_BLINDING_get_thread_id(const BN_BLINDING *);
- void BN_BLINDING_set_thread_id(BN_BLINDING *, unsigned long);
- #endif
- void BN_BLINDING_set_thread(BN_BLINDING *);
- int BN_BLINDING_cmp_thread(const BN_BLINDING *, const
- CRYPTO_THREADID *);
+ *) 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.
+ [Steve Henson]
- Also, the ERR_remove_state(int pid) API has been deprecated;
+ *) New build option no-ec2m to disable characteristic 2 code.
+ [Steve Henson]
- #ifndef OPENSSL_NO_DEPRECATED
- void ERR_remove_state(unsigned long pid)
- #endif
- void ERR_remove_thread_state(CRYPTO_THREADID *tid);
+ *) 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]
- [Geoff Thorpe]
+ *) Add some FIPS mode restrictions to GCM. Add internal IV generator.
+ Update fips_gcmtest to use IV generator.
+ [Steve Henson]
+
+ *) 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]
+
+ *) 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
+ input buffer is NULL and length 0 finalisation should be performed.
+ [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)]
+
+ *) Add Next Protocol Negotiation,
+ http://tools.ietf.org/html/draft-agl-tls-nextprotoneg-00. Can be
+ disabled with a no-npn flag to config or Configure. Code donated
+ by Google.
+ [Adam Langley <agl@google.com> and Ben Laurie]
+
+ *) Use type ossl_ssize_t instad of ssize_t which isn't available on
+ all platforms. Move ssize_t definition from e_os.h to the public
+ header file e_os2.h as it now appears in public header file cms.h
+ [Steve Henson]
+
+ *) New function OPENSSL_gmtime_diff to find the difference in days
+ and seconds between two tm structures. This will be used to provide
+ additional functionality for ASN1_TIME.
+ [Steve Henson]
+
+ *) New -sigopt option to the ca, req and x509 utilities. Additional
+ signature parameters can be passed using this option and in
+ particular PSS.
+ [Steve Henson]
+
+ *) Add RSA PSS signing function. This will generate and set the
+ appropriate AlgorithmIdentifiers for PSS based on those in the
+ corresponding EVP_MD_CTX structure. No application support yet.
+ [Steve Henson]
+
+ *) Support for companion algorithm specific ASN1 signing routines.
+ New function ASN1_item_sign_ctx() signs a pre-initialised
+ EVP_MD_CTX structure and sets AlgorithmIdentifiers based on
+ the appropriate parameters.
+ [Steve Henson]
+
+ *) Add new algorithm specific ASN1 verification initialisation function
+ to EVP_PKEY_ASN1_METHOD: this is not in EVP_PKEY_METHOD since the ASN1
+ handling will be the same no matter what EVP_PKEY_METHOD is used.
+ Add a PSS handler to support verification of PSS signatures: checked
+ against a number of sample certificates.
+ [Steve Henson]
+
+ *) Add signature printing for PSS. Add PSS OIDs.
+ [Steve Henson, Martin Kaiser <lists@kaiser.cx>]
+
+ *) Add algorithm specific signature printing. An individual ASN1 method
+ can now print out signatures instead of the standard hex dump.
+
+ More complex signatures (e.g. PSS) can print out more meaningful
+ information. Include DSA version that prints out the signature
+ parameters r, s.
+ [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]
+
+ *) 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 or reject.
+ [Steve Henson]
+
+ *) 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]
+
+ *) Experiemental regnegotiation 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]
+
+ *) Experiemental password based recipient info support for CMS library:
+ implementing RFC3211.
+ [Steve Henson]
+
+ *) Split password based encryption into PBES2 and PBKDF2 functions. This
+ neatly separates the code into cipher and PBE sections and is required
+ for some algorithms that split PBES2 into separate pieces (such as
+ password based CMS).
+ [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]
+
+ Changes between 1.0.0d and 1.0.1 [xx XXX xxxx]
+
+ *) Add functions to copy EVP_PKEY_METHOD and retrieve flags and id.
+ [Steve Henson]
+
+ *) Add EC_GFp_nistp224_method(), a 64-bit optimized implementation for
+ elliptic curve NIST-P224 with constant-time single point multiplication on
+ typical inputs. EC_GROUP_new_by_curve_name() will automatically use this
+ (while EC_GROUP_new_curve_GFp() currently won't and prefers the more
+ flexible implementations).
+
+ The implementation requires support for the nonstandard type __uint128_t,
+ and so is disabled by default. To include this in your build of OpenSSL,
+ use -DEC_NISTP224_64_GCC_128 on the Configure (or config) command line,
+ and run "make depend" (or "make update").
+ [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
+
+ *) Permit abbreviated handshakes when renegotiating using the function
+ SSL_renegotiate_abbreviated().
+ [Robin Seggelmann <seggelmann@fh-muenster.de>]
+
+ *) Add call to ENGINE_register_all_complete() to
+ ENGINE_load_builtin_engines(), so some implementations get used
+ automatically instead of needing explicit application support.
+ [Steve Henson]
+
+ *) Add support for TLS key exporter as described in RFC5705.
+ [Robin Seggelmann <seggelmann@fh-muenster.de>, Steve Henson]
+
+ *) Initial TLSv1.1 support. Since TLSv1.1 is very similar to TLS v1.0 only
+ a few changes are required:
+
+ Add SSL_OP_NO_TLSv1_1 flag.
+ Add TLSv1_1 methods.
+ Update version checking logic to handle version 1.1.
+ Add explicit IV handling (ported from DTLS code).
+ Add command line options to s_client/s_server.
+ [Steve Henson]
+
+ Changes between 1.0.0c and 1.0.0d [8 Feb 2011]
+
+ *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
+ [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
+
+ *) Fix bug in string printing code: if *any* escaping is enabled we must
+ escape the escape character (backslash) or the resulting string is
+ ambiguous.
+ [Steve Henson]
+
+ Changes between 1.0.0b and 1.0.0c [2 Dec 2010]
+
+ *) Disable code workaround for ancient and obsolete Netscape browsers
+ and servers: an attacker can use it in a ciphersuite downgrade attack.
+ Thanks to Martin Rex for discovering this bug. CVE-2010-4180
+ [Steve Henson]
+
+ *) Fixed J-PAKE implementation error, originally discovered by
+ Sebastien Martini, further info and confirmation from Stefan
+ Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
+ [Ben Laurie]
+
+ Changes between 1.0.0a and 1.0.0b [16 Nov 2010]
+
+ *) Fix extension code to avoid race conditions which can result in a buffer
+ overrun vulnerability: resumed sessions must not be modified as they can
+ be shared by multiple threads. CVE-2010-3864
+ [Steve Henson]
+
+ *) Fix WIN32 build system to correctly link an ENGINE directory into
+ a DLL.
+ [Steve Henson]
+
+ Changes between 1.0.0 and 1.0.0a [01 Jun 2010]
+
+ *) Check return value of int_rsa_verify in pkey_rsa_verifyrecover
+ (CVE-2010-1633)
+ [Steve Henson, Peter-Michael Hager <hager@dortmund.net>]
+
+ Changes between 0.9.8n and 1.0.0 [29 Mar 2010]
+
+ *) Add "missing" function EVP_CIPHER_CTX_copy(). This copies a cipher
+ context. The operation can be customised via the ctrl mechanism in
+ case ENGINEs want to include additional functionality.
+ [Steve Henson]
+
+ *) Tolerate yet another broken PKCS#8 key format: private key value negative.
+ [Steve Henson]
+
+ *) Add new -subject_hash_old and -issuer_hash_old options to x509 utility to
+ output hashes compatible with older versions of OpenSSL.
+ [Willy Weisz <weisz@vcpc.univie.ac.at>]
+
+ *) Fix compression algorithm handling: if resuming a session use the
+ compression algorithm of the resumed session instead of determining
+ it from client hello again. Don't allow server to change algorithm.
+ [Steve Henson]
+
+ *) Add load_crls() function to apps tidying load_certs() too. Add option
+ to verify utility to allow additional CRLs to be included.
+ [Steve Henson]
+
+ *) Update OCSP request code to permit adding custom headers to the request:
+ some responders need this.
+ [Steve Henson]
+
+ *) The function EVP_PKEY_sign() returns <=0 on error: check return code
+ correctly.
+ [Julia Lawall <julia@diku.dk>]
+
+ *) Update verify callback code in apps/s_cb.c and apps/verify.c, it
+ needlessly dereferenced structures, used obsolete functions and
+ didn't handle all updated verify codes correctly.
+ [Steve Henson]
+
+ *) Disable MD2 in the default configuration.
+ [Steve Henson]
+
+ *) In BIO_pop() and BIO_push() use the ctrl argument (which was NULL) to
+ indicate the initial BIO being pushed or popped. This makes it possible
+ to determine whether the BIO is the one explicitly called or as a result
+ of the ctrl being passed down the chain. Fix BIO_pop() and SSL BIOs so
+ it handles reference counts correctly and doesn't zero out the I/O bio
+ when it is not being explicitly popped. WARNING: applications which
+ included workarounds for the old buggy behaviour will need to be modified
+ or they could free up already freed BIOs.
+ [Steve Henson]
+
+ *) Extend the uni2asc/asc2uni => OPENSSL_uni2asc/OPENSSL_asc2uni
+ renaming to all platforms (within the 0.9.8 branch, this was
+ done conditionally on Netware platforms to avoid a name clash).
+ [Guenter <lists@gknw.net>]
+
+ *) Add ECDHE and PSK support to DTLS.
+ [Michael Tuexen <tuexen@fh-muenster.de>]
+
+ *) Add CHECKED_STACK_OF macro to safestack.h, otherwise safestack can't
+ be used on C++.
+ [Steve Henson]
+
+ *) Add "missing" function EVP_MD_flags() (without this the only way to
+ retrieve a digest flags is by accessing the structure directly. Update
+ EVP_MD_do_all*() and EVP_CIPHER_do_all*() to include the name a digest
+ or cipher is registered as in the "from" argument. Print out all
+ registered digests in the dgst usage message instead of manually
+ attempting to work them out.
+ [Steve Henson]
+
+ *) If no SSLv2 ciphers are used don't use an SSLv2 compatible client hello:
+ this allows the use of compression and extensions. Change default cipher
+ string to remove SSLv2 ciphersuites. This effectively avoids ancient SSLv2
+ by default unless an application cipher string requests it.
+ [Steve Henson]
+
+ *) Alter match criteria in PKCS12_parse(). It used to try to use local
+ key ids to find matching certificates and keys but some PKCS#12 files
+ don't follow the (somewhat unwritten) rules and this strategy fails.
+ Now just gather all certificates together and the first private key
+ then look for the first certificate that matches the key.
+ [Steve Henson]
+
+ *) Support use of registered digest and cipher names for dgst and cipher
+ commands instead of having to add each one as a special case. So now
+ you can do:
+
+ openssl sha256 foo
+
+ as well as:
+
+ openssl dgst -sha256 foo
+
+ and this works for ENGINE based algorithms too.
+
+ [Steve Henson]
+
+ *) Update Gost ENGINE to support parameter files.
+ [Victor B. Wagner <vitus@cryptocom.ru>]
+
+ *) Support GeneralizedTime in ca utility.
+ [Oliver Martin <oliver@volatilevoid.net>, Steve Henson]
+
+ *) Enhance the hash format used for certificate directory links. The new
+ form uses the canonical encoding (meaning equivalent names will work
+ even if they aren't identical) and uses SHA1 instead of MD5. This form
+ is incompatible with the older format and as a result c_rehash should
+ be used to rebuild symbolic links.
+ [Steve Henson]
+
+ *) Make PKCS#8 the default write format for private keys, replacing the
+ traditional format. This form is standardised, more secure and doesn't
+ include an implicit MD5 dependency.
+ [Steve Henson]
+
+ *) Add a $gcc_devteam_warn option to Configure. The idea is that any code
+ committed to OpenSSL should pass this lot as a minimum.
+ [Steve Henson]
+
+ *) Add session ticket override functionality for use by EAP-FAST.
+ [Jouni Malinen <j@w1.fi>]
+
+ *) Modify HMAC functions to return a value. Since these can be implemented
+ in an ENGINE errors can occur.
+ [Steve Henson]
+
+ *) Type-checked OBJ_bsearch_ex.
+ [Ben Laurie]
+
+ *) Type-checked OBJ_bsearch. Also some constification necessitated
+ by type-checking. Still to come: TXT_DB, bsearch(?),
+ OBJ_bsearch_ex, qsort, CRYPTO_EX_DATA, ASN1_VALUE, ASN1_STRING,
+ CONF_VALUE.
+ [Ben Laurie]
+
+ *) New function OPENSSL_gmtime_adj() to add a specific number of days and
+ seconds to a tm structure directly, instead of going through OS
+ specific date routines. This avoids any issues with OS routines such
+ as the year 2038 bug. New *_adj() functions for ASN1 time structures
+ and X509_time_adj_ex() to cover the extended range. The existing
+ X509_time_adj() is still usable and will no longer have any date issues.
+ [Steve Henson]
+
+ *) Delta CRL support. New use deltas option which will attempt to locate
+ and search any appropriate delta CRLs available.
+
+ This work was sponsored by Google.
+ [Steve Henson]
+
+ *) Support for CRLs partitioned by reason code. Reorganise CRL processing
+ code and add additional score elements. Validate alternate CRL paths
+ as part of the CRL checking and indicate a new error "CRL path validation
+ error" in this case. Applications wanting additional details can use
+ the verify callback and check the new "parent" field. If this is not
+ NULL CRL path validation is taking place. Existing applications wont
+ see this because it requires extended CRL support which is off by
+ default.
+
+ This work was sponsored by Google.
+ [Steve Henson]
+
+ *) Support for freshest CRL extension.
+
+ This work was sponsored by Google.
+ [Steve Henson]
+
+ *) Initial indirect CRL support. Currently only supported in the CRLs
+ passed directly and not via lookup. Process certificate issuer
+ CRL entry extension and lookup CRL entries by bother issuer name
+ and serial number. Check and process CRL issuer entry in IDP extension.
+
+ This work was sponsored by Google.
+ [Steve Henson]
+
+ *) Add support for distinct certificate and CRL paths. The CRL issuer
+ certificate is validated separately in this case. Only enabled if
+ an extended CRL support flag is set: this flag will enable additional
+ CRL functionality in future.
+
+ This work was sponsored by Google.
+ [Steve Henson]
+
+ *) Add support for policy mappings extension.
+
+ This work was sponsored by Google.
+ [Steve Henson]
+
+ *) Fixes to pathlength constraint, self issued certificate handling,
+ policy processing to align with RFC3280 and PKITS tests.
+
+ This work was sponsored by Google.
+ [Steve Henson]
+
+ *) Support for name constraints certificate extension. DN, email, DNS
+ and URI types are currently supported.
+
+ This work was sponsored by Google.
+ [Steve Henson]
+
+ *) To cater for systems that provide a pointer-based thread ID rather
+ than numeric, deprecate the current numeric thread ID mechanism and
+ replace it with a structure and associated callback type. This
+ mechanism allows a numeric "hash" to be extracted from a thread ID in
+ either case, and on platforms where pointers are larger than 'long',
+ mixing is done to help ensure the numeric 'hash' is usable even if it
+ can't be guaranteed unique. The default mechanism is to use "&errno"
+ as a pointer-based thread ID to distinguish between threads.
+
+ Applications that want to provide their own thread IDs should now use
+ CRYPTO_THREADID_set_callback() to register a callback that will call
+ either CRYPTO_THREADID_set_numeric() or CRYPTO_THREADID_set_pointer().
+
+ Note that ERR_remove_state() is now deprecated, because it is tied
+ to the assumption that thread IDs are numeric. ERR_remove_state(0)
+ to free the current thread's error state should be replaced by
+ ERR_remove_thread_state(NULL).
+
+ (This new approach replaces the functions CRYPTO_set_idptr_callback(),
+ CRYPTO_get_idptr_callback(), and CRYPTO_thread_idptr() that existed in
+ OpenSSL 0.9.9-dev between June 2006 and August 2008. Also, if an
+ application was previously providing a numeric thread callback that
+ was inappropriate for distinguishing threads, then uniqueness might
+ have been obtained with &errno that happened immediately in the
+ intermediate development versions of OpenSSL; this is no longer the
+ case, the numeric thread callback will now override the automatic use
+ of &errno.)
+ [Geoff Thorpe, with help from Bodo Moeller]
+
+ *) Initial support for different CRL issuing certificates. This covers a
+ simple case where the self issued certificates in the chain exist and
+ the real CRL issuer is higher in the existing chain.
+
+ This work was sponsored by Google.
+ [Steve Henson]
+
+ *) Removed effectively defunct crypto/store from the build.
+ [Ben Laurie]
+
+ *) Revamp of STACK to provide stronger type-checking. Still to come:
+ TXT_DB, bsearch(?), OBJ_bsearch, qsort, CRYPTO_EX_DATA, ASN1_VALUE,
+ ASN1_STRING, CONF_VALUE.
+ [Ben Laurie]
+
+ *) Add a new SSL_MODE_RELEASE_BUFFERS mode flag to release unused buffer
+ RAM on SSL connections. This option can save about 34k per idle SSL.
+ [Nick Mathewson]
+
+ *) Revamp of LHASH to provide stronger type-checking. Still to come:
+ STACK, TXT_DB, bsearch, qsort.
+ [Ben Laurie]
*) Initial support for Cryptographic Message Syntax (aka CMS) based
on RFC3850, RFC3851 and RFC3852. New cms directory and cms utility,
list-message-digest-algorithms and list-cipher-algorithms.
[Steve Henson]
- *) In addition to the numerical (unsigned long) thread ID, provide
- for a pointer (void *) thread ID. This helps accomodate systems
- that do not provide an unsigned long thread ID. OpenSSL assumes
- it is in the same thread iff both the numerical and the pointer
- thread ID agree; so applications are just required to define one
- of them appropriately (e.g., by using a pointer to a per-thread
- memory object malloc()ed by the application for the pointer-type
- thread ID). Exactly analoguous to the existing functions
-
- void CRYPTO_set_id_callback(unsigned long (*func)(void));
- unsigned long (*CRYPTO_get_id_callback(void))(void);
- unsigned long CRYPTO_thread_id(void);
-
- we now have additional functions
-
- void CRYPTO_set_idptr_callback(void *(*func)(void));
- void *(*CRYPTO_get_idptr_callback(void))(void);
- void *CRYPTO_thread_idptr(void);
-
- also in <openssl/crypto.h>. The default value for
- CRYPTO_thread_idptr() if the application has not provided its own
- callback is &errno.
- [Bodo Moeller]
-
- -- NOTE -- this change has been reverted and replaced with a
- type-independent wrapper (ie. applications do not have to check
- two type-specific thread ID representations as implied in this
- change note). However, the "idptr" callback form described here
- can still be registered. Please see the more recent CHANGES note
- regarding CRYPTO_THREADID. [Geoff Thorpe]
- -- NOTE --
-
*) Change the array representation of binary polynomials: the list
of degrees of non-zero coefficients is now terminated with -1.
Previously it was terminated with 0, which was also part of the
*) Change 'Configure' script to enable Camellia by default.
[NTT]
+
+ Changes between 0.9.8q and 0.9.8r [8 Feb 2011]
+
+ *) Fix parsing of OCSP stapling ClientHello extension. CVE-2011-0014
+ [Neel Mehta, Adam Langley, Bodo Moeller (Google)]
+
+ *) Fix bug in string printing code: if *any* escaping is enabled we must
+ escape the escape character (backslash) or the resulting string is
+ ambiguous.
+ [Steve Henson]
+
+ Changes between 0.9.8p and 0.9.8q [2 Dec 2010]
+
+ *) Disable code workaround for ancient and obsolete Netscape browsers
+ and servers: an attacker can use it in a ciphersuite downgrade attack.
+ Thanks to Martin Rex for discovering this bug. CVE-2010-4180
+ [Steve Henson]
+
+ *) Fixed J-PAKE implementation error, originally discovered by
+ Sebastien Martini, further info and confirmation from Stefan
+ Arentz and Feng Hao. Note that this fix is a security fix. CVE-2010-4252
+ [Ben Laurie]
+
+ Changes between 0.9.8o and 0.9.8p [16 Nov 2010]
+
+ *) Fix extension code to avoid race conditions which can result in a buffer
+ overrun vulnerability: resumed sessions must not be modified as they can
+ be shared by multiple threads. CVE-2010-3864
+ [Steve Henson]
+
+ *) Fix for double free bug in ssl/s3_clnt.c CVE-2010-2939
+ [Steve Henson]
+
+ *) Don't reencode certificate when calculating signature: cache and use
+ the original encoding instead. This makes signature verification of
+ some broken encodings work correctly.
+ [Steve Henson]
+
+ *) ec2_GF2m_simple_mul bugfix: compute correct result if the output EC_POINT
+ is also one of the inputs.
+ [Emilia Käsper <emilia.kasper@esat.kuleuven.be> (Google)]
+
+ *) Don't repeatedly append PBE algorithms to table if they already exist.
+ Sort table on each new add. This effectively makes the table read only
+ after all algorithms are added and subsequent calls to PKCS12_pbe_add
+ etc are non-op.
+ [Steve Henson]
+
+ Changes between 0.9.8n and 0.9.8o [01 Jun 2010]
+
+ [NB: OpenSSL 0.9.8o and later 0.9.8 patch levels were released after
+ OpenSSL 1.0.0.]
+
+ *) Correct a typo in the CMS ASN1 module which can result in invalid memory
+ access or freeing data twice (CVE-2010-0742)
+ [Steve Henson, Ronald Moesbergen <intercommit@gmail.com>]
+
+ *) Add SHA2 algorithms to SSL_library_init(). SHA2 is becoming far more
+ common in certificates and some applications which only call
+ SSL_library_init and not OpenSSL_add_all_algorithms() will fail.
+ [Steve Henson]
+
+ *) VMS fixes:
+ Reduce copying into .apps and .test in makevms.com
+ Don't try to use blank CA certificate in CA.com
+ Allow use of C files from original directories in maketests.com
+ [Steven M. Schweda" <sms@antinode.info>]
+
+ Changes between 0.9.8m and 0.9.8n [24 Mar 2010]
+
+ *) When rejecting SSL/TLS records due to an incorrect version number, never
+ update s->server with a new major version number. As of
+ - OpenSSL 0.9.8m if 'short' is a 16-bit type,
+ - OpenSSL 0.9.8f if 'short' is longer than 16 bits,
+ the previous behavior could result in a read attempt at NULL when
+ receiving specific incorrect SSL/TLS records once record payload
+ protection is active. (CVE-2010-0740)
+ [Bodo Moeller, Adam Langley <agl@chromium.org>]
+
+ *) Fix for CVE-2010-0433 where some kerberos enabled versions of OpenSSL
+ could be crashed if the relevant tables were not present (e.g. chrooted).
+ [Tomas Hoger <thoger@redhat.com>]
+
+ Changes between 0.9.8l and 0.9.8m [25 Feb 2010]
+
+ *) Always check bn_wexpend() return values for failure. (CVE-2009-3245)
+ [Martin Olsson, Neel Mehta]
+
+ *) Fix X509_STORE locking: Every 'objs' access requires a lock (to
+ accommodate for stack sorting, always a write lock!).
+ [Bodo Moeller]
+
+ *) On some versions of WIN32 Heap32Next is very slow. This can cause
+ excessive delays in the RAND_poll(): over a minute. As a workaround
+ include a time check in the inner Heap32Next loop too.
+ [Steve Henson]
+
+ *) The code that handled flushing of data in SSL/TLS originally used the
+ BIO_CTRL_INFO ctrl to see if any data was pending first. This caused
+ the problem outlined in PR#1949. The fix suggested there however can
+ trigger problems with buggy BIO_CTRL_WPENDING (e.g. some versions
+ of Apache). So instead simplify the code to flush unconditionally.
+ This should be fine since flushing with no data to flush is a no op.
+ [Steve Henson]
+
+ *) Handle TLS versions 2.0 and later properly and correctly use the
+ highest version of TLS/SSL supported. Although TLS >= 2.0 is some way
+ off ancient servers have a habit of sticking around for a while...
+ [Steve Henson]
+
+ *) Modify compression code so it frees up structures without using the
+ ex_data callbacks. This works around a problem where some applications
+ call CRYPTO_cleanup_all_ex_data() before application exit (e.g. when
+ restarting) then use compression (e.g. SSL with compression) later.
+ This results in significant per-connection memory leaks and
+ has caused some security issues including CVE-2008-1678 and
+ CVE-2009-4355.
+ [Steve Henson]
+
+ *) Constify crypto/cast (i.e., <openssl/cast.h>): a CAST_KEY doesn't
+ change when encrypting or decrypting.
+ [Bodo Moeller]
+
+ *) Add option SSL_OP_LEGACY_SERVER_CONNECT which will allow clients to
+ connect and renegotiate with servers which do not support RI.
+ Until RI is more widely deployed this option is enabled by default.
+ [Steve Henson]
+
+ *) Add "missing" ssl ctrls to clear options and mode.
+ [Steve Henson]
+
+ *) If client attempts to renegotiate and doesn't support RI respond with
+ a no_renegotiation alert as required by RFC5746. Some renegotiating
+ TLS clients will continue a connection gracefully when they receive
+ the alert. Unfortunately OpenSSL mishandled this alert and would hang
+ waiting for a server hello which it will never receive. Now we treat a
+ received no_renegotiation alert as a fatal error. This is because
+ applications requesting a renegotiation might well expect it to succeed
+ and would have no code in place to handle the server denying it so the
+ only safe thing to do is to terminate the connection.
+ [Steve Henson]
+
+ *) Add ctrl macro SSL_get_secure_renegotiation_support() which returns 1 if
+ peer supports secure renegotiation and 0 otherwise. Print out peer
+ renegotiation support in s_client/s_server.
+ [Steve Henson]
+
+ *) Replace the highly broken and deprecated SPKAC certification method with
+ the updated NID creation version. This should correctly handle UTF8.
+ [Steve Henson]
+
+ *) Implement RFC5746. Re-enable renegotiation but require the extension
+ as needed. Unfortunately, SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION
+ turns out to be a bad idea. It has been replaced by
+ SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION which can be set with
+ SSL_CTX_set_options(). This is really not recommended unless you
+ know what you are doing.
+ [Eric Rescorla <ekr@networkresonance.com>, Ben Laurie, Steve Henson]
+
+ *) Fixes to stateless session resumption handling. Use initial_ctx when
+ issuing and attempting to decrypt tickets in case it has changed during
+ servername handling. Use a non-zero length session ID when attempting
+ stateless session resumption: this makes it possible to determine if
+ a resumption has occurred immediately after receiving server hello
+ (several places in OpenSSL subtly assume this) instead of later in
+ the handshake.
+ [Steve Henson]
+
+ *) The functions ENGINE_ctrl(), OPENSSL_isservice(),
+ CMS_get1_RecipientRequest() and RAND_bytes() can return <=0 on error
+ fixes for a few places where the return code is not checked
+ correctly.
+ [Julia Lawall <julia@diku.dk>]
+
+ *) Add --strict-warnings option to Configure script to include devteam
+ warnings in other configurations.
+ [Steve Henson]
+
+ *) Add support for --libdir option and LIBDIR variable in makefiles. This
+ makes it possible to install openssl libraries in locations which
+ have names other than "lib", for example "/usr/lib64" which some
+ systems need.
+ [Steve Henson, based on patch from Jeremy Utley]
+
+ *) Don't allow the use of leading 0x80 in OIDs. This is a violation of
+ X690 8.9.12 and can produce some misleading textual output of OIDs.
+ [Steve Henson, reported by Dan Kaminsky]
+
+ *) Delete MD2 from algorithm tables. This follows the recommendation in
+ several standards that it is not used in new applications due to
+ several cryptographic weaknesses. For binary compatibility reasons
+ the MD2 API is still compiled in by default.
+ [Steve Henson]
+
+ *) Add compression id to {d2i,i2d}_SSL_SESSION so it is correctly saved
+ and restored.
+ [Steve Henson]
+
+ *) Rename uni2asc and asc2uni functions to OPENSSL_uni2asc and
+ OPENSSL_asc2uni conditionally on Netware platforms to avoid a name
+ clash.
+ [Guenter <lists@gknw.net>]
+
+ *) Fix the server certificate chain building code to use X509_verify_cert(),
+ it used to have an ad-hoc builder which was unable to cope with anything
+ other than a simple chain.
+ [David Woodhouse <dwmw2@infradead.org>, Steve Henson]
+
+ *) Don't check self signed certificate signatures in X509_verify_cert()
+ by default (a flag can override this): it just wastes time without
+ adding any security. As a useful side effect self signed root CAs
+ with non-FIPS digests are now usable in FIPS mode.
+ [Steve Henson]
+
+ *) In dtls1_process_out_of_seq_message() the check if the current message
+ is already buffered was missing. For every new message was memory
+ allocated, allowing an attacker to perform an denial of service attack
+ with sending out of seq handshake messages until there is no memory
+ left. Additionally every future messege was buffered, even if the
+ sequence number made no sense and would be part of another handshake.
+ So only messages with sequence numbers less than 10 in advance will be
+ buffered. (CVE-2009-1378)
+ [Robin Seggelmann, discovered by Daniel Mentz]
+
+ *) Records are buffered if they arrive with a future epoch to be
+ processed after finishing the corresponding handshake. There is
+ currently no limitation to this buffer allowing an attacker to perform
+ a DOS attack with sending records with future epochs until there is no
+ memory left. This patch adds the pqueue_size() function to detemine
+ the size of a buffer and limits the record buffer to 100 entries.
+ (CVE-2009-1377)
+ [Robin Seggelmann, discovered by Daniel Mentz]
- Changes between 0.9.8g and 0.9.8h [xx XXX xxxx]
+ *) Keep a copy of frag->msg_header.frag_len so it can be used after the
+ parent structure is freed. (CVE-2009-1379)
+ [Daniel Mentz]
+
+ *) Handle non-blocking I/O properly in SSL_shutdown() call.
+ [Darryl Miles <darryl-mailinglists@netbauds.net>]
+
+ *) Add 2.5.4.* OIDs
+ [Ilya O. <vrghost@gmail.com>]
+
+ Changes between 0.9.8k and 0.9.8l [5 Nov 2009]
+
+ *) Disable renegotiation completely - this fixes a severe security
+ problem (CVE-2009-3555) at the cost of breaking all
+ renegotiation. Renegotiation can be re-enabled by setting
+ SSL3_FLAGS_ALLOW_UNSAFE_LEGACY_RENEGOTIATION in s3->flags at
+ run-time. This is really not recommended unless you know what
+ you're doing.
+ [Ben Laurie]
+
+ Changes between 0.9.8j and 0.9.8k [25 Mar 2009]
+
+ *) Don't set val to NULL when freeing up structures, it is freed up by
+ underlying code. If sizeof(void *) > sizeof(long) this can result in
+ zeroing past the valid field. (CVE-2009-0789)
+ [Paolo Ganci <Paolo.Ganci@AdNovum.CH>]
+
+ *) Fix bug where return value of CMS_SignerInfo_verify_content() was not
+ checked correctly. This would allow some invalid signed attributes to
+ appear to verify correctly. (CVE-2009-0591)
+ [Ivan Nestlerode <inestlerode@us.ibm.com>]
+
+ *) Reject UniversalString and BMPString types with invalid lengths. This
+ prevents a crash in ASN1_STRING_print_ex() which assumes the strings have
+ a legal length. (CVE-2009-0590)
+ [Steve Henson]
+
+ *) Set S/MIME signing as the default purpose rather than setting it
+ unconditionally. This allows applications to override it at the store
+ level.
+ [Steve Henson]
+
+ *) Permit restricted recursion of ASN1 strings. This is needed in practice
+ to handle some structures.
+ [Steve Henson]
+
+ *) Improve efficiency of mem_gets: don't search whole buffer each time
+ for a '\n'
+ [Jeremy Shapiro <jnshapir@us.ibm.com>]
+
+ *) New -hex option for openssl rand.
+ [Matthieu Herrb]
+
+ *) Print out UTF8String and NumericString when parsing ASN1.
+ [Steve Henson]
+
+ *) Support NumericString type for name components.
+ [Steve Henson]
+
+ *) Allow CC in the environment to override the automatically chosen
+ compiler. Note that nothing is done to ensure flags work with the
+ chosen compiler.
+ [Ben Laurie]
+
+ Changes between 0.9.8i and 0.9.8j [07 Jan 2009]
+
+ *) Properly check EVP_VerifyFinal() and similar return values
+ (CVE-2008-5077).
+ [Ben Laurie, Bodo Moeller, Google Security Team]
+
+ *) Enable TLS extensions by default.
+ [Ben Laurie]
+
+ *) Allow the CHIL engine to be loaded, whether the application is
+ multithreaded or not. (This does not release the developer from the
+ obligation to set up the dynamic locking callbacks.)
+ [Sander Temme <sander@temme.net>]
+
+ *) Use correct exit code if there is an error in dgst command.
+ [Steve Henson; problem pointed out by Roland Dirlewanger]
+
+ *) Tweak Configure so that you need to say "experimental-jpake" to enable
+ JPAKE, and need to use -DOPENSSL_EXPERIMENTAL_JPAKE in applications.
+ [Bodo Moeller]
+
+ *) Add experimental JPAKE support, including demo authentication in
+ s_client and s_server.
+ [Ben Laurie]
+
+ *) Set the comparison function in v3_addr_canonize().
+ [Rob Austein <sra@hactrn.net>]
+
+ *) Add support for XMPP STARTTLS in s_client.
+ [Philip Paeps <philip@freebsd.org>]
+
+ *) Change the server-side SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG behavior
+ to ensure that even with this option, only ciphersuites in the
+ server's preference list will be accepted. (Note that the option
+ applies only when resuming a session, so the earlier behavior was
+ just about the algorithm choice for symmetric cryptography.)
+ [Bodo Moeller]
+
+ Changes between 0.9.8h and 0.9.8i [15 Sep 2008]
+
+ *) Fix NULL pointer dereference if a DTLS server received
+ ChangeCipherSpec as first record (CVE-2009-1386).
+ [PR #1679]
+
+ *) Fix a state transitition in s3_srvr.c and d1_srvr.c
+ (was using SSL3_ST_CW_CLNT_HELLO_B, should be ..._ST_SW_SRVR_...).
+ [Nagendra Modadugu]
+
+ *) The fix in 0.9.8c that supposedly got rid of unsafe
+ double-checked locking was incomplete for RSA blinding,
+ addressing just one layer of what turns out to have been
+ doubly unsafe triple-checked locking.
+
+ So now fix this for real by retiring the MONT_HELPER macro
+ in crypto/rsa/rsa_eay.c.
+
+ [Bodo Moeller; problem pointed out by Marius Schilder]
+
+ *) Various precautionary measures:
+
+ - Avoid size_t integer overflow in HASH_UPDATE (md32_common.h).
+
+ - Avoid a buffer overflow in d2i_SSL_SESSION() (ssl_asn1.c).
+ (NB: This would require knowledge of the secret session ticket key
+ to exploit, in which case you'd be SOL either way.)
+
+ - Change bn_nist.c so that it will properly handle input BIGNUMs
+ outside the expected range.
+
+ - Enforce the 'num' check in BN_div() (bn_div.c) for non-BN_DEBUG
+ builds.
+
+ [Neel Mehta, Bodo Moeller]
+
+ *) Allow engines to be "soft loaded" - i.e. optionally don't die if
+ the load fails. Useful for distros.
+ [Ben Laurie and the FreeBSD team]
+
+ *) Add support for Local Machine Keyset attribute in PKCS#12 files.
+ [Steve Henson]
+
+ *) Fix BN_GF2m_mod_arr() top-bit cleanup code.
+ [Huang Ying]
+
+ *) Expand ENGINE to support engine supplied SSL client certificate functions.
+
+ This work was sponsored by Logica.
+ [Steve Henson]
+
+ *) Add CryptoAPI ENGINE to support use of RSA and DSA keys held in Windows
+ keystores. Support for SSL/TLS client authentication too.
+ Not compiled unless enable-capieng specified to Configure.
+
+ This work was sponsored by Logica.
+ [Steve Henson]
+
+ *) Fix bug in X509_ATTRIBUTE creation: dont set attribute using
+ ASN1_TYPE_set1 if MBSTRING flag set. This bug would crash certain
+ attribute creation routines such as certifcate requests and PKCS#12
+ files.
+ [Steve Henson]
+
+ Changes between 0.9.8g and 0.9.8h [28 May 2008]
+
+ *) Fix flaw if 'Server Key exchange message' is omitted from a TLS
+ handshake which could lead to a cilent crash as found using the
+ Codenomicon TLS test suite (CVE-2008-1672)
+ [Steve Henson, Mark Cox]
+
+ *) Fix double free in TLS server name extensions which could lead to
+ a remote crash found by Codenomicon TLS test suite (CVE-2008-0891)
+ [Joe Orton]
*) Clear error queue in SSL_CTX_use_certificate_chain_file()
the 'db' section contains nothing but zeroes (there is a one-byte
invalid read after the end of 'db').
[Ivan Nestlerode <inestlerode@us.ibm.com>]
-
+
+ *) Partial backport from 0.9.9-dev:
+
+ Introduce bn_mul_mont (dedicated Montgomery multiplication
+ procedure) as a candidate for BIGNUM assembler implementation.
+ While 0.9.9-dev uses assembler for various architectures, only
+ x86_64 is available by default here in the 0.9.8 branch, and
+ 32-bit x86 is available through a compile-time setting.
+
+ To try the 32-bit x86 assembler implementation, use Configure
+ option "enable-montasm" (which exists only for this backport).
+
+ As "enable-montasm" for 32-bit x86 disclaims code stability
+ anyway, in this constellation we activate additional code
+ backported from 0.9.9-dev for further performance improvements,
+ namely BN_from_montgomery_word. (To enable this otherwise,
+ e.g. x86_64, try "-DMONT_FROM_WORD___NON_DEFAULT_0_9_8_BUILD".)
+
+ [Andy Polyakov (backport partially by Bodo Moeller)]
+
*) Add TLS session ticket callback. This allows an application to set
TLS ticket cipher and HMAC keys rather than relying on hardcoded fixed
values. This is useful for key rollover for example where several key
implementation.
[Ian Lister (tweaked by Geoff Thorpe)]
+ *) Backport of CMS code to OpenSSL 0.9.8. This differs from the 0.9.9
+ implemention in the following ways:
+
+ Lack of EVP_PKEY_ASN1_METHOD means algorithm parameters have to be
+ hard coded.
+
+ Lack of BER streaming support means one pass streaming processing is
+ only supported if data is detached: setting the streaming flag is
+ ignored for embedded content.
+
+ CMS support is disabled by default and must be explicitly enabled
+ with the enable-cms configuration option.
+ [Steve Henson]
+
*) Update the GMP engine glue to do direct copies between BIGNUM and
mpz_t when openssl and GMP use the same limb size. Otherwise the
existing "conversion via a text string export" trick is still used.
- [Paul Sheer <paulsheer@gmail.com>, Geoff Thorpe]
+ [Paul Sheer <paulsheer@gmail.com>]
*) Zlib compression BIO. This is a filter BIO which compressed and
uncompresses any data passed through it.
authentication-only ciphersuites.
[Bodo Moeller]
+ *) Update the SSL_get_shared_ciphers() fix CVE-2006-3738 which was
+ not complete and could lead to a possible single byte overflow
+ (CVE-2007-5135) [Ben Laurie]
+
Changes between 0.9.8d and 0.9.8e [23 Feb 2007]
*) Since AES128 and AES256 (and similarly Camellia128 and
differing sizes.
[Richard Levitte]
- Changes between 0.9.7m and 0.9.7n [xx XXX xxxx]
-
- *) In the SSL/TLS server implementation, be strict about session ID
- context matching (which matters if an application uses a single
- external cache for different purposes). Previously,
- out-of-context reuse was forbidden only if SSL_VERIFY_PEER was
- set. This did ensure strict client verification, but meant that,
- with applications using a single external cache for quite
- different requirements, clients could circumvent ciphersuite
- restrictions for a given session ID context by starting a session
- in a different context.
- [Bodo Moeller]
-
Changes between 0.9.7l and 0.9.7m [23 Feb 2007]
*) Cleanse PEM buffers before freeing them since they may contain
BN_mod_exp_mont_consttime() is the new exponentiation implementation,
and this is automatically used by BN_mod_exp_mont() if the new flag
- BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
+ BN_FLG_EXP_CONSTTIME is set for the exponent. RSA, DSA, and DH
will use this BN flag for private exponents unless the flag
RSA_FLAG_NO_EXP_CONSTTIME, DSA_FLAG_NO_EXP_CONSTTIME, or
DH_FLAG_NO_EXP_CONSTTIME, respectively, is set.
projects / openssl.git / blobdiff