X-Git-Url: https://git.openssl.org/gitweb/?a=blobdiff_plain;f=CHANGES;h=bf2af58a4703fdc014b30371d75b6bfe619791d2;hb=9eeb779e8ffa78d0a7e9aba395ffedca187a7aef;hp=9d4d7ee16c42a0d9d83396d68af6c0c0744f1d5c;hpb=d3b3a6d389c9824c80e503229ff2a6109031736f;p=openssl.git diff --git a/CHANGES b/CHANGES index 9d4d7ee16c..bf2af58a47 100644 --- a/CHANGES +++ b/CHANGES @@ -2,7 +2,351 @@ OpenSSL CHANGES _______________ - Changes between 0.9.8g and 0.9.8h [xx XXX xxxx] + Changes between 0.9.8n and 0.9.8o [xx XXX xxxx] + + *) 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" ] + + 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 ] + + *) 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 ] + + 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., ): 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 , 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 ] + + *) 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 ] + + *) 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 , 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] + + *) 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 ] + + *) Add 2.5.4.* OIDs + [Ilya O. ] + + 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 ] + + *) 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 ] + + *) 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 ] + + *) 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 ] + + *) 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 ] + + *) Add support for XMPP STARTTLS in s_client. + [Philip Paeps ] + + *) 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) @@ -1342,19 +1686,6 @@ 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