Changes between 1.0.2 and 1.1.0 [xx XXX xxxx]
+ *) 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.
+ [Matt Caswell]
+
+ *) 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
+ WIN16
+ [Rich Salz]
+
+ *) Start cleaning up OPENSSL_NO_xxx #define's
+ OPENSSL_NO_RIPEMD160, OPENSSL_NO_RIPEMD merged into OPENSSL_NO_RMD160
+ OPENSSL_NO_FP_API merged into OPENSSL_NO_STDIO
+ [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>]
whose return value is often ignored.
[Steve Henson]
- Changes between 1.0.1h and 1.0.2 [xx XXX xxxx]
+ Changes between 1.0.1k and 1.0.2 [xx XXX xxxx]
- *) 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]
+ *) 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 (Intel Corp), Andy Polyakov]
+ [Shay Gueron & Vlad Krasnov (Intel Corp), Andy Polyakov]
*) Add support for the SignedCertificateTimestampList certificate and
OCSP response extensions from RFC6962.
*) Accelerated modular exponentiation for Intel processors, a.k.a.
RSAZ.
- [Shay Gueron (Intel Corp)]
+ [Shay Gueron & Vlad Krasnov (Intel Corp)]
*) Support for new and upcoming Intel processors, including AVX2,
BMI and SHA ISA extensions. This includes additional "stitched"
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 1.0.1i and 1.0.1j [xx XXX xxxx]
+ 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.
+ (CVE-2014-3572)
+ [Steve Henson]
+
+ *) 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]
+
+ *) 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.
+ [Emilia Käsper]
+
+ 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.
[Steve Henson]
+ 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]
*) Fix for SSL/TLS MITM flaw. An attacker using a carefully crafted