path: root/NEWS

  NEWS
  ====

  This file gives a brief overview of the major changes between each OpenSSL
  release. For more details please read the CHANGES file.

  Major changes between OpenSSL 1.1.1w and OpenSSL 1.1.1x [under development]

      o

  Major changes between OpenSSL 1.1.1v and OpenSSL 1.1.1w [11 Sep 2023]

      o Fix POLY1305 MAC implementation corrupting XMM registers on Windows
        (CVE-2023-4807)

  Major changes between OpenSSL 1.1.1u and OpenSSL 1.1.1v [1 Aug 2023]

      o Fix excessive time spent checking DH q parameter value (CVE-2023-3817)
      o Fix DH_check() excessive time with over sized modulus (CVE-2023-3446)

  Major changes between OpenSSL 1.1.1t and OpenSSL 1.1.1u [30 May 2023]

      o Mitigate for very slow `OBJ_obj2txt()` performance with gigantic
        OBJECT IDENTIFIER sub-identities.  (CVE-2023-2650)
      o Fixed documentation of X509_VERIFY_PARAM_add0_policy() (CVE-2023-0466)
      o Fixed handling of invalid certificate policies in leaf certificates
        (CVE-2023-0465)
      o Limited the number of nodes created in a policy tree ([CVE-2023-0464])

  Major changes between OpenSSL 1.1.1s and OpenSSL 1.1.1t [7 Feb 2023]

      o Fixed X.400 address type confusion in X.509 GeneralName (CVE-2023-0286)
      o Fixed Use-after-free following BIO_new_NDEF (CVE-2023-0215)
      o Fixed Double free after calling PEM_read_bio_ex (CVE-2022-4450)
      o Fixed Timing Oracle in RSA Decryption (CVE-2022-4304)

  Major changes between OpenSSL 1.1.1r and OpenSSL 1.1.1s [1 Nov 2022]

      o Fixed a regression introduced in OpenSSL 1.1.1r not refreshing the
        certificate data to be signed before signing the certificate.

  Major changes between OpenSSL 1.1.1q and OpenSSL 1.1.1r [11 Oct 2022]

      o Added a missing header for memcmp that caused compilation failure on
        some platforms

  Major changes between OpenSSL 1.1.1p and OpenSSL 1.1.1q [5 Jul 2022]

      o Fixed AES OCB failure to encrypt some bytes on 32-bit x86 platforms
        (CVE-2022-2097)

  Major changes between OpenSSL 1.1.1o and OpenSSL 1.1.1p [21 Jun 2022]

      o Fixed additional bugs in the c_rehash script which was not properly
        sanitising shell metacharacters to prevent command injection
        (CVE-2022-2068)

  Major changes between OpenSSL 1.1.1n and OpenSSL 1.1.1o [3 May 2022]

      o Fixed a bug in the c_rehash script which was not properly sanitising
        shell metacharacters to prevent command injection (CVE-2022-1292)

  Major changes between OpenSSL 1.1.1m and OpenSSL 1.1.1n [15 Mar 2022]

      o Fixed a bug in the BN_mod_sqrt() function that can cause it to loop
        forever for non-prime moduli (CVE-2022-0778)

  Major changes between OpenSSL 1.1.1l and OpenSSL 1.1.1m [14 Dec 2021]

      o None

  Major changes between OpenSSL 1.1.1k and OpenSSL 1.1.1l [24 Aug 2021]

      o Fixed an SM2 Decryption Buffer Overflow (CVE-2021-3711)
      o Fixed various read buffer overruns processing ASN.1 strings (CVE-2021-3712)

  Major changes between OpenSSL 1.1.1j and OpenSSL 1.1.1k [25 Mar 2021]

      o Fixed a problem with verifying a certificate chain when using the
        X509_V_FLAG_X509_STRICT flag (CVE-2021-3450)
      o Fixed an issue where an OpenSSL TLS server may crash if sent a
        maliciously crafted renegotiation ClientHello message from a client
        (CVE-2021-3449)

  Major changes between OpenSSL 1.1.1i and OpenSSL 1.1.1j [16 Feb 2021]

      o Fixed a NULL pointer deref in the X509_issuer_and_serial_hash()
        function (CVE-2021-23841)
      o Fixed the RSA_padding_check_SSLv23() function and the RSA_SSLV23_PADDING
        padding mode to correctly check for rollback attacks
      o Fixed an overflow in the EVP_CipherUpdate, EVP_EncryptUpdate and
        EVP_DecryptUpdate functions (CVE-2021-23840)
      o Fixed SRP_Calc_client_key so that it runs in constant time

  Major changes between OpenSSL 1.1.1h and OpenSSL 1.1.1i [8 Dec 2020]

      o Fixed NULL pointer deref in GENERAL_NAME_cmp (CVE-2020-1971)

  Major changes between OpenSSL 1.1.1g and OpenSSL 1.1.1h [22 Sep 2020]

      o Disallow explicit curve parameters in verifications chains when
        X509_V_FLAG_X509_STRICT is used
      o Enable 'MinProtocol' and 'MaxProtocol' to configure both TLS and DTLS
        contexts
      o Oracle Developer Studio will start reporting deprecation warnings

  Major changes between OpenSSL 1.1.1f and OpenSSL 1.1.1g [21 Apr 2020]

      o Fixed segmentation fault in SSL_check_chain() (CVE-2020-1967)

  Major changes between OpenSSL 1.1.1e and OpenSSL 1.1.1f [31 Mar 2020]

      o Revert the unexpected EOF reporting via SSL_ERROR_SSL

  Major changes between OpenSSL 1.1.1d and OpenSSL 1.1.1e [17 Mar 2020]

      o Fixed an overflow bug in the x64_64 Montgomery squaring procedure
        used in exponentiation with 512-bit moduli (CVE-2019-1551)
      o Properly detect unexpected EOF while reading in libssl and report
        it via SSL_ERROR_SSL

  Major changes between OpenSSL 1.1.1c and OpenSSL 1.1.1d [10 Sep 2019]

      o Fixed a fork protection issue (CVE-2019-1549)
      o Fixed a padding oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey
        (CVE-2019-1563)
      o For built-in EC curves, ensure an EC_GROUP built from the curve name is
        used even when parsing explicit parameters
      o Compute ECC cofactors if not provided during EC_GROUP construction
        (CVE-2019-1547)
      o Early start up entropy quality from the DEVRANDOM seed source has been
        improved for older Linux systems
      o Correct the extended master secret constant on EBCDIC systems
      o Use Windows installation paths in the mingw builds (CVE-2019-1552)
      o Changed DH_check to accept parameters with order q and 2q subgroups
      o Significantly reduce secure memory usage by the randomness pools
      o Revert the DEVRANDOM_WAIT feature for Linux systems

  Major changes between OpenSSL 1.1.1b and OpenSSL 1.1.1c [28 May 2019]

      o Prevent over long nonces in ChaCha20-Poly1305 (CVE-2019-1543)

  Major changes between OpenSSL 1.1.1a and OpenSSL 1.1.1b [26 Feb 2019]

      o Change the info callback signals for the start and end of a post-handshake
        message exchange in TLSv1.3.
      o Fix a bug in DTLS over SCTP. This breaks interoperability with older versions
        of OpenSSL like OpenSSL 1.1.0 and OpenSSL 1.0.2.

  Major changes between OpenSSL 1.1.1 and OpenSSL 1.1.1a [20 Nov 2018]

      o Timing vulnerability in DSA signature generation (CVE-2018-0734)
      o Timing vulnerability in ECDSA signature generation (CVE-2018-0735)

  Major changes between OpenSSL 1.1.0i and OpenSSL 1.1.1 [11 Sep 2018]

      o Support for TLSv1.3 added (see https://wiki.openssl.org/index.php/TLS1.3
        for further important information). The TLSv1.3 implementation includes:
          o Fully compliant implementation of RFC8446 (TLSv1.3) on by default
          o Early data (0-RTT)
          o Post-handshake authentication and key update
          o Middlebox Compatibility Mode
          o TLSv1.3 PSKs
          o Support for all five RFC8446 ciphersuites
          o RSA-PSS signature algorithms (backported to TLSv1.2)
          o Configurable session ticket support
          o Stateless server support
          o Rewrite of the packet construction code for "safer" packet handling
          o Rewrite of the extension handling code
      o Complete rewrite of the OpenSSL random number generator to introduce the
        following capabilities
          o The default RAND method now utilizes an AES-CTR DRBG according to
            NIST standard SP 800-90Ar1.
          o Support for multiple DRBG instances with seed chaining.
          o There is a public and private DRBG instance.
          o The DRBG instances are fork-safe.
          o Keep all global DRBG instances on the secure heap if it is enabled.
          o The public and private DRBG instance are per thread for lock free
            operation
      o Support for various new cryptographic algorithms including:
          o SHA3
          o SHA512/224 and SHA512/256
          o EdDSA (both Ed25519 and Ed448) including X509 and TLS support
          o X448 (adding to the existing X25519 support in 1.1.0)
          o Multi-prime RSA
          o SM2
          o SM3
          o SM4
          o SipHash
          o ARIA (including TLS support)
      o Significant Side-Channel attack security improvements
      o Add a new ClientHello callback to provide the ability to adjust the SSL
        object at an early stage.
      o Add 'Maximum Fragment Length' TLS extension negotiation and support
      o A new STORE module, which implements a uniform and URI based reader of
        stores that can contain keys, certificates, CRLs and numerous other
        objects.
      o Move the display of configuration data to configdata.pm.
      o Allow GNU style "make variables" to be used with Configure.
      o Claim the namespaces OSSL and OPENSSL, represented as symbol prefixes
      o Rewrite of devcrypto engine

  Major changes between OpenSSL 1.1.0h and OpenSSL 1.1.0i [under development]

      o Client DoS due to large DH parameter (CVE-2018-0732)
      o Cache timing vulnerability in RSA Key Generation (CVE-2018-0737)

  Major changes between OpenSSL 1.1.0g and OpenSSL 1.1.0h [under development]

      o Constructed ASN.1 types with a recursive definition could exceed the
        stack (CVE-2018-0739)
      o Incorrect CRYPTO_memcmp on HP-UX PA-RISC (CVE-2018-0733)
      o rsaz_1024_mul_avx2 overflow bug on x86_64 (CVE-2017-3738)

  Major changes between OpenSSL 1.1.0f and OpenSSL 1.1.0g [2 Nov 2017]

      o bn_sqrx8x_internal carry bug on x86_64 (CVE-2017-3736)
      o Malformed X.509 IPAddressFamily could cause OOB read (CVE-2017-3735)

  Major changes between OpenSSL 1.1.0e and OpenSSL 1.1.0f [25 May 2017]

      o config now recognises 64-bit mingw and chooses mingw64 instead of mingw

  Major changes between OpenSSL 1.1.0d and OpenSSL 1.1.0e [16 Feb 2017]

      o Encrypt-Then-Mac renegotiation crash (CVE-2017-3733)

  Major changes between OpenSSL 1.1.0c and OpenSSL 1.1.0d [26 Jan 2017]

      o Truncated packet could crash via OOB read (CVE-2017-3731)
      o Bad (EC)DHE parameters cause a client crash (CVE-2017-3730)
      o BN_mod_exp may produce incorrect results on x86_64 (CVE-2017-3732)

  Major changes between OpenSSL 1.1.0b and OpenSSL 1.1.0c [10 Nov 2016]

      o ChaCha20/Poly1305 heap-buffer-overflow (CVE-2016-7054)
      o CMS Null dereference (CVE-2016-7053)
      o Montgomery multiplication may produce incorrect results (CVE-2016-7055)

  Major changes between OpenSSL 1.1.0a and OpenSSL 1.1.0b [26 Sep 2016]

      o Fix Use After Free for large message sizes (CVE-2016-6309)

  Major changes between OpenSSL 1.1.0 and OpenSSL 1.1.0a [22 Sep 2016]

      o OCSP Status Request extension unbounded memory growth (CVE-2016-6304)
      o SSL_peek() hang on empty record (CVE-2016-6305)
      o Excessive allocation of memory in tls_get_message_header()
       (CVE-2016-6307)
      o Excessive allocation of memory in dtls1_preprocess_fragment()
       (CVE-2016-6308)

  Major changes between OpenSSL 1.0.2h and OpenSSL 1.1.0 [25 Aug 2016]

      o Copyright text was shrunk to a boilerplate that points to the license
      o "shared" builds are now the default when possible
      o Added support for "pipelining"
      o Added the AFALG engine
      o New threading API implemented
      o Support for ChaCha20 and Poly1305 added to libcrypto and libssl
      o Support for extended master secret
      o CCM ciphersuites
      o Reworked test suite, now based on perl, Test::Harness and Test::More
      o *Most* libcrypto and libssl public structures were made opaque,
        including:
        BIGNUM and associated types, EC_KEY and EC_KEY_METHOD,
        DH and DH_METHOD, DSA and DSA_METHOD, RSA and RSA_METHOD,
        BIO and BIO_METHOD, EVP_MD_CTX, EVP_MD, EVP_CIPHER_CTX,
        EVP_CIPHER, EVP_PKEY and associated types, HMAC_CTX,
        X509, X509_CRL, X509_OBJECT, X509_STORE_CTX, X509_STORE,
        X509_LOOKUP, X509_LOOKUP_METHOD
      o libssl internal structures made opaque
      o SSLv2 support removed
      o Kerberos ciphersuite support removed
      o RC4 removed from DEFAULT ciphersuites in libssl
      o 40 and 56 bit cipher support removed from libssl
      o All public header files moved to include/openssl, no more symlinking
      o SSL/TLS state machine, version negotiation and record layer rewritten
      o EC revision: now operations use new EC_KEY_METHOD.
      o Support for OCB mode added to libcrypto
      o Support for asynchronous crypto operations added to libcrypto and libssl
      o Deprecated interfaces can now be disabled at build time either
        relative to the latest release via the "no-deprecated" Configure
        argument, or via the "--api=1.1.0|1.0.0|0.9.8" option.
      o Application software can be compiled with -DOPENSSL_API_COMPAT=version
        to ensure that features deprecated in that version are not exposed.
      o Support for RFC6698/RFC7671 DANE TLSA peer authentication
      o Change of Configure to use --prefix as the main installation
        directory location rather than --openssldir.  The latter becomes
        the directory for certs, private key and openssl.cnf exclusively.
      o Reworked BIO networking library, with full support for IPv6.
      o New "unified" build system
      o New security levels
      o Support for scrypt algorithm
      o Support for X25519
      o Extended SSL_CONF support using configuration files
      o KDF algorithm support. Implement TLS PRF as a KDF.
      o Support for Certificate Transparency
      o HKDF support.

  Major changes between OpenSSL 1.0.2g and OpenSSL 1.0.2h [3 May 2016]

      o Prevent padding oracle in AES-NI CBC MAC check (CVE-2016-2107)
      o Fix EVP_EncodeUpdate overflow (CVE-2016-2105)
      o Fix EVP_EncryptUpdate overflow (CVE-2016-2106)
      o Prevent ASN.1 BIO excessive memory allocation (CVE-2016-2109)
      o EBCDIC overread (CVE-2016-2176)
      o Modify behavior of ALPN to invoke callback after SNI/servername
        callback, such that updates to the SSL_CTX affect ALPN.
      o Remove LOW from the DEFAULT cipher list.  This removes singles DES from
        the default.
      o Only remove the SSLv2 methods with the no-ssl2-method option.

  Major changes between OpenSSL 1.0.2f and OpenSSL 1.0.2g [1 Mar 2016]

      o Disable weak ciphers in SSLv3 and up in default builds of OpenSSL.
      o Disable SSLv2 default build, default negotiation and weak ciphers
        (CVE-2016-0800)
      o Fix a double-free in DSA code (CVE-2016-0705)
      o Disable SRP fake user seed to address a server memory leak
        (CVE-2016-0798)
      o Fix BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption
        (CVE-2016-0797)
      o Fix memory issues in BIO_*printf functions (CVE-2016-0799)
      o Fix side channel attack on modular exponentiation (CVE-2016-0702)

  Major changes between OpenSSL 1.0.2e and OpenSSL 1.0.2f [28 Jan 2016]

      o DH small subgroups (CVE-2016-0701)
      o SSLv2 doesn't block disabled ciphers (CVE-2015-3197)

  Major changes between OpenSSL 1.0.2d and OpenSSL 1.0.2e [3 Dec 2015]

      o BN_mod_exp may produce incorrect results on x86_64 (CVE-2015-3193)
      o Certificate verify crash with missing PSS parameter (CVE-2015-3194)
      o X509_ATTRIBUTE memory leak (CVE-2015-3195)
      o Rewrite EVP_DecodeUpdate (base64 decoding) to fix several bugs
      o In DSA_generate_parameters_ex, if the provided seed is too short,
        return an error

  Major changes between OpenSSL 1.0.2c and OpenSSL 1.0.2d [9 Jul 2015]

      o Alternate chains certificate forgery (CVE-2015-1793)
      o Race condition handling PSK identify hint (CVE-2015-3196)

  Major changes between OpenSSL 1.0.2b and OpenSSL 1.0.2c [12 Jun 2015]

      o Fix HMAC ABI incompatibility

  Major changes between OpenSSL 1.0.2a and OpenSSL 1.0.2b [11 Jun 2015]

      o Malformed ECParameters causes infinite loop (CVE-2015-1788)
      o Exploitable out-of-bounds read in X509_cmp_time (CVE-2015-1789)
      o PKCS7 crash with missing EnvelopedContent (CVE-2015-1790)
      o CMS verify infinite loop with unknown hash function (CVE-2015-1792)
      o Race condition handling NewSessionTicket (CVE-2015-1791)

  Major changes between OpenSSL 1.0.2 and OpenSSL 1.0.2a [19 Mar 2015]

      o OpenSSL 1.0.2 ClientHello sigalgs DoS fix (CVE-2015-0291)
      o Multiblock corrupted pointer fix (CVE-2015-0290)
      o Segmentation fault in DTLSv1_listen fix (CVE-2015-0207)
      o Segmentation fault in ASN1_TYPE_cmp fix (CVE-2015-0286)
      o Segmentation fault for invalid PSS parameters fix (CVE-2015-0208)
      o ASN.1 structure reuse memory corruption fix (CVE-2015-0287)
      o PKCS7 NULL pointer dereferences fix (CVE-2015-0289)
      o DoS via reachable assert in SSLv2 servers fix (CVE-2015-0293)
      o Empty CKE with client auth and DHE fix (CVE-2015-1787)
      o Handshake with unseeded PRNG fix (CVE-2015-0285)
      o Use After Free following d2i_ECPrivatekey error fix (CVE-2015-0209)
      o X509_to_X509_REQ NULL pointer deref fix (CVE-2015-0288)
      o Removed the export ciphers from the DEFAULT ciphers

  Major changes between OpenSSL 1.0.1l and OpenSSL 1.0.2 [22 Jan 2015]:

      o Suite B support for TLS 1.2 and DTLS 1.2
      o Support for DTLS 1.2
      o TLS automatic EC curve selection.
      o API to set TLS supported signature algorithms and curves
      o SSL_CONF configuration API.
      o TLS Brainpool support.
      o ALPN support.
      o CMS support for RSA-PSS, RSA-OAEP, ECDH and X9.42 DH.

  Major changes between OpenSSL 1.0.1k and OpenSSL 1.0.1l [15 Jan 2015]

      o Build fixes for the Windows and OpenVMS platforms

  Major changes between OpenSSL 1.0.1j and OpenSSL 1.0.1k [8 Jan 2015]

      o Fix for CVE-2014-3571
      o Fix for CVE-2015-0206
      o Fix for CVE-2014-3569
      o Fix for CVE-2014-3572
      o Fix for CVE-2015-0204
      o Fix for CVE-2015-0205
      o Fix for CVE-2014-8275
      o Fix for CVE-2014-3570

  Major changes between OpenSSL 1.0.1i and OpenSSL 1.0.1j [15 Oct 2014]

      o Fix for CVE-2014-3513
      o Fix for CVE-2014-3567
      o Mitigation for CVE-2014-3566 (SSL protocol vulnerability)
      o Fix for CVE-2014-3568

  Major changes between OpenSSL 1.0.1h and OpenSSL 1.0.1i [6 Aug 2014]

      o Fix for CVE-2014-3512
      o Fix for CVE-2014-3511
      o Fix for CVE-2014-3510
      o Fix for CVE-2014-3507
      o Fix for CVE-2014-3506
      o Fix for CVE-2014-3505
      o Fix for CVE-2014-3509
      o Fix for CVE-2014-5139
      o Fix for CVE-2014-3508

  Major changes between OpenSSL 1.0.1g and OpenSSL 1.0.1h [5 Jun 2014]

      o Fix