We are proud to announce two new stable GnuTLS releases: Version 2.6.4 and 2.4.3.
Normally we only make stable releases on the latest stable branch, i.e., currently 2.6.x. Many users appears to still be using the 2.4.x branch. To make it easier for these users to upgrade to a secure version, we have back-ported all of the X.509 chain verification fixes from the 2.6.x branch to the 2.4.x branch. These two releases should solve the [CVE-2008-4989] security problem and fix the problems with incorrectly rejected chains that were reported for earlier 2.6.x releases. GnuTLS is a modern C library that implement the standard network security protocol Transport Layer Security (TLS), for use by network applications. GnuTLS is developed for GNU/Linux, but works on many Unix-like systems and comes with a binary installer for Windows. The GnuTLS library is distributed under the terms of the GNU Lesser General Public License version 2.1 (or later). The "extra" GnuTLS library (which contains TLS/IA support, LZO compression and Libgcrypt FIPS-mode handler), the OpenSSL compatibility library, the self tests and the command line tools are all distributed under the GNU General Public License version 3.0 (or later). The manual is distributed under the GNU Free Documentation License version 1.3 (or later). The project page of the library is available at: http://www.gnutls.org/ http://www.gnu.org/software/gnutls/ What's New ========== Version 2.6.4 is a maintenance release on our stable branch. ** libgnutls: Accept chains where intermediary certs are trusted. Before GnuTLS needed to validate the entire chain back to a self-signed certificate. GnuTLS will now stop looking when it has found an intermediary trusted certificate. The new behaviour is useful when chains, for example, contains a top-level CA, an intermediary CA signed using RSA-MD5, and an end-entity certificate. To avoid chain validation errors due to the RSA-MD5 cert, you can explicitly add the intermediary RSA-MD5 cert to your trusted certs. The signature on trusted certificates are not checked, so the chain has a chance to validate correctly. Reported by "Douglas E. Engert" <deeng...@anl.gov> in <http://thread.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3351>. ** libgnutls: result_size in gnutls_hex_encode now holds the size of the result. Report by John Brooks <spec...@dereferenced.net>. ** libgnutls: gnutls_handshake when sending client hello during a rehandshake, will not offer a version number larger than the current. Reported by Tristan Hill <s...@saticed.me.uk>. ** libgnutls: Permit V1 Certificate Authorities properly. Before they were mistakenly rejected even though GNUTLS_VERIFY_ALLOW_ANY_X509_V1_CA_CRT and/or GNUTLS_VERIFY_ALLOW_X509_V1_CA_CRT were supplied. Reported by "Douglas E. Engert" <deeng...@anl.gov> in <http://thread.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3351>. ** libgnutls: deprecate X.509 validation chains using MD5 and MD2 signatures. This is a bugfix -- the previous attempt to do this from internal x509 certificate verification procedures did not return the correct value for certificates using a weak hash. Reported by Daniel Kahn Gillmor <d...@fifthhorseman.net> in <http://thread.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3332>, debugged and patch by Tomas Mraz <tm...@redhat.com> and Daniel Kahn Gillmor <d...@fifthhorseman.net>. ** libgnutls: Fix compile error with Sun CC. Reported by Jeff Cai <jeff....@sun.com> in <https://savannah.gnu.org/support/?106549>. ** API and ABI modifications: No changes since last version. Getting the Software ==================== GnuTLS may be downloaded from one of the mirror sites or direct from <ftp://ftp.gnu.org/gnu/gnutls/>. The list of mirrors can be found at <http://www.gnu.org/software/gnutls/download.html>. Here are the BZIP2 compressed sources (4.9MB): ftp://ftp.gnu.org/gnu/gnutls/gnutls-2.6.4.tar.bz2 http://ftp.gnu.org/gnu/gnutls/gnutls-2.6.4.tar.bz2 ftp://ftp.gnu.org/gnu/gnutls/gnutls-2.4.3.tar.bz2 http://ftp.gnu.org/gnu/gnutls/gnutls-2.4.3.tar.bz2 Here are OpenPGP detached signatures signed using key 0xB565716F: ftp://ftp.gnu.org/gnu/gnutls/gnutls-2.6.4.tar.bz2.sig http://ftp.gnu.org/gnu/gnutls/gnutls-2.6.4.tar.bz2.sig ftp://ftp.gnu.org/gnu/gnutls/gnutls-2.4.3.tar.bz2.sig http://ftp.gnu.org/gnu/gnutls/gnutls-2.4.3.tar.bz2.sig Note, that we don't distribute gzip compressed tarballs. In order to check that the version of GnuTLS which you are going to install is an original and unmodified one, you should verify the OpenPGP signature. You can use the command gpg --verify gnutls-2.6.4.tar.bz2.sig This checks whether the signature file matches the source file. You should see a message indicating that the signature is good and made by that signing key. Make sure that you have the right key, either by checking the fingerprint of that key with other sources or by checking that the key has been signed by a trustworthy other key. The signing key can be identified with the following information: pub 1280R/B565716F 2002-05-05 [expires: 2009-04-21] Key fingerprint = 0424 D4EE 81A0 E3D1 19C6 F835 EDA2 1E94 B565 716F uid Simon Josefsson <si...@josefsson.org> uid Simon Josefsson <j...@extundo.com> sub 1280R/4D5D40AE 2002-05-05 [expires: 2009-04-21] The key is available from: http://josefsson.org/key.txt dns:b565716f.josefsson.org?TYPE=CERT Alternatively, after successfully verifying the OpenPGP signature of this announcement, you could verify that the files match the following checksum values. The values are for SHA-1 and SHA-224 respectively: 11dd1e11599906a32b3ff92308f4c4dbaadbad58 gnutls-2.6.4.tar.bz2 83289283739e168f346427784cc9a58c248c3363d1dc346674a54b15 gnutls-2.6.4.tar.bz2 0f4e6ed9ae5939bb9a63bb95722a25e2f6e32fae gnutls-2.4.3.tar.bz2 b8daacc55a67048c241686d2567eb9797af486c6920bd5c59774c981 gnutls-2.4.3.tar.bz2 Documentation ============= The manual is available online at: http://www.gnu.org/software/gnutls/documentation.html In particular the following formats are available: HTML: http://www.gnu.org/software/gnutls/manual/html_node/index.html PDF: http://www.gnu.org/software/gnutls/manual/gnutls.pdf For developers there is a GnuTLS API reference manual formatted using the GTK-DOC tools: http://www.gnu.org/software/gnutls/reference/gnutls-gnutls.html Community ========= If you need help to use GnuTLS, or want to help others, you are invited to join our help-gnutls mailing list, see: http://lists.gnu.org/mailman/listinfo/help-gnutls If you wish to participate in the development of GnuTLS, you are invited to join our gnutls-dev mailing list, see: http://lists.gnu.org/mailman/listinfo/gnutls-devel Windows installer ================= GnuTLS has been ported to the Windows operating system, and a binary installer is available. The installer contains DLLs for application development, manuals, examples, and source code. The installer uses libgpg-error v1.7, libgcrypt v1.4.4, libtasn1 v1.8, and GnuTLS v2.6.4. For more information about GnuTLS for Windows: http://josefsson.org/gnutls4win/ The Windows binary installer and PGP signature: http://josefsson.org/gnutls4win/gnutls-2.6.4.exe (14MB) http://josefsson.org/gnutls4win/gnutls-2.6.4.exe.sig The checksum values for SHA-1 and SHA-224 are: 25975ee8ff0dea1acfb75d5c0bf12ffe7453136d gnutls-2.6.4.exe 83da845fa1436dc6efc78f39c10bea9a6831191720ad10743ec30915 gnutls-2.6.4.exe Thanks to Enrico Tassi, we also have mingw32 *.deb's available: http://josefsson.org/gnutls4win/mingw32-gnutls_2.6.4-1_all.deb The checksum values for SHA-1 and SHA-224 are: 310b4a0f8953927517d7ce600ff24b88c1deada5 mingw32-gnutls_2.6.4-1_all.deb b251518c49d0ab04246b726a4171796d602b5cbbd8a7dd12f58c584b mingw32-gnutls_2.6.4-1_all.deb Internationalization ==================== GnuTLS messages have been translated into Dutch, French, German, Malay, Polish, Swedish, and Vietnamese. We welcome the addition of more translations. Support ======= Improving GnuTLS is costly, but you can help! We are looking for organizations that find GnuTLS useful and wish to contribute back. You can contribute by reporting bugs, improve the software, or donate money or equipment. Commercial support contracts for GnuTLS are available, and they help finance continued maintenance. Simon Josefsson Datakonsult AB, a Stockholm based privately held company, is currently funding GnuTLS maintenance. We are always looking for interesting development projects. See http://josefsson.org/ for more details. The GnuTLS service directory is available at: http://www.gnu.org/software/gnutls/commercial.html Happy Hacking, Simon
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