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Kerberos Version 5, Release 1.3 Release Notes The MIT Kerberos Team Unpacking the Source Distribution --------------------------------- The source distribution of Kerberos 5 comes in a gzipped tarfile, krb5-1.3.tar.gz. Instructions on how to extract the entire distribution follow. If you have the GNU tar program and gzip installed, you can simply do: gtar zxpf krb5-1.3.tar.gz If you don't have GNU tar, you will need to get the FSF gzip distribution and use gzcat: gzcat krb5-1.3.tar.gz | tar xpf - Both of these methods will extract the sources into krb5-1.3/src and the documentation into krb5-1.3/doc. Building and Installing Kerberos 5 ---------------------------------- The first file you should look at is doc/install-guide.ps; it contains the notes for building and installing Kerberos 5. The info file krb5-install.info has the same information in info file format. You can view this using the GNU emacs info-mode, or by using the standalone info file viewer from the Free Software Foundation. This is also available as an HTML file, install.html. Other good files to look at are admin-guide.ps and user-guide.ps, which contain the system administrator's guide, and the user's guide, respectively. They are also available as info files kerberos-admin.info and krb5-user.info, respectively. These files are also available as HTML files. If you are attempting to build under Windows, please see the src/windows/README file. Reporting Bugs -------------- Please report any problems/bugs/comments using the krb5-send-pr program. The krb5-send-pr program will be installed in the sbin directory once you have successfully compiled and installed Kerberos V5 (or if you have installed one of our binary distributions). If you are not able to use krb5-send-pr because you haven't been able compile and install Kerberos V5 on any platform, you may send mail to email@example.com. You may view bug reports by visiting http://krbdev.mit.edu/rt/ and logging in as "guest" with password "guest". Notes, Major Changes, and Known Bugs for 1.3 -------------------------------------------- * We now install the compile_et program, so other packages can use the installed com_err library with their own error tables. (If you use our com_err code, that is; see below.) * The header files we install now assume ANSI/ISO C ('89, not '99). We have stopped testing on SunOS 4, even with gcc. Some of our code now has C89-based assumptions, like free(NULL) being well defined, that will probably frustrate any attempts to run this code under SunOS 4 or other pre-C89 systems. * Some new code, bug fixes, and cleanup for IPv6 support. [[TODO: Insert list of (non-)supporting programs and libraries here.]] * We have upgraded to autoconf 2.52 (or later), and the syntax for specifying certain configuration options have changed. For example, autoconf 2.52 configure scripts let you specify command-line options like "configure CC=/some/path/foo-cc", so we have removed some of our old options like --with-cc in favor of this approach. * The client libraries can now use TCP to connect to the KDC. This may be necessary when talking to Microsoft KDCs (domain controllers), if they issue you tickets with lots of PAC data. * If you have versions of the com_err, ss, or Berkeley DB packages installed locally, you can use the --with-system-et, --with-system-ss, and --with-system-db configure options to use them rather than using the versions supplied here. Note that the interfaces are assumed to be similar to those we supply; in particular, some older, divergent versions of the com_err library may not work with the krb5 sources. Many configure-time variables can be used to help the compiler and linker find the installed packages; see the build documentation for details. Major changes listed by ticket ID --------------------------------- *  PRNG breakage on 64-bit platforms no longer an issue due to new PRNG implementation. *  Client library is now compatible with the RC4-based cryptosystem used by Windows 2000. *  krb4 long lifetime support has been implemented. *  krb5_gss_register_acceptor_identity() implemented (is called gsskrb5_register_acceptor_identity() by Heimdal). * [1156, 1209] It is now possible to use the system com_err to build this release. *  TCP support added to client library. *  TCP support added to the KDC, but is disabled by default. *  autoconf-2.5x is now required by the build system. *  It is now possible to use the system Berkeley/Sleepycat DB library to build this release. * [1189, 1251] The KfM krb4 library source base has been merged. * [1385, 1395, 1410] The krb4 protocol vulnerabilities [MITKRB5-SA-2003-004] have been worked around. Note that this will disable krb4 cross-realm functionality, as well as krb4 triple-DES functionality. Please see doc/krb4-xrealm.txt for details of the patch. *  The xdrmem integer overflows [MITKRB5-SA-2003-003] have been fixed. *  The krb5_principal buffer bounds problems [MITKRB5-SA-2003-005] have been fixed. Thanks to Nalin Dahyabhai. Minor changes listed by ticket ID --------------------------------- *  default_principal_flags documented. *  Docs refer to appropriate example domains/IPs now. *  --includedir honored now. *  unused argument in try_krb4() in login.c deleted. *  login.krb5 handles SIGHUP more sanely now and thus avoids getting the session into a weird state w.r.t. job control. *  krb4 encrypted rcp should work a little better now. Thanks to Greg Hudson. *  Weird echoing of admin password in kadmin client worked around by not using buffered stdio calls to read passwords. *  The build system has been reworked to allow the user to set CFLAGS, LDFLAGS, CPPFLAGS, etc. reasonably. *  Related to , rewrite krb5_prompter_posix() to no longer use longjmp(), thus avoiding some bugs relating to non-restoration of terminal settings. *  login.krb5 no longer zeroes out the terminal window size. *  decomp_ticket() in libkrb4 now looks up the local realm name more correctly. Thanks to Booker Bense. *  .rconf files are excluded from the release now. *  LOG_AUTHPRIV syslog facility is now usable for logging on systems that support it. *  krshd now syslogs using the LOG_AUTH facility. *  Berekely DB build is better integrated into the krb5 library build process. *  lib/krb5/os/localaddr.c and kdc/network.c use a common source for local address enumeration now. *  kdc/network.c problems relating to SIOCGIFCONF have been fixed. *  An overflow in the string-to-time conversion routines has been fixed. *  des-cbc-md4 now included in default enctypes. *  des3 no longer failing on Windows due to SHA1 implementation problems. *  A minor inconsistency in ccache.tex has been fixed. *  option parsing bugs rendered irrelevant by removal of unused gss mechanism. *  Related to , problems with the ordering of LDFLAGS initialization rendered irrelevant by use of native autoconf idioms. *  Related to , quirks with --with-cc no longer relevant as AC_PROG_CC is used instead now. *  kdc_default_options now honored in gss context initialization. *  Client library, as well as KDC, now perform reasonable sorting of ETYPE-INFO preauthentication data. *  NULL pointer dereferences in code calling krb5_change_password() have been fixed. *  Initial credentials acquisition failures related to client host having a large number of local network interfaces should be fixed now. *  krb5_auth_con_genaddrs() no longer inappropriately returns -1 on some error cases. * [1065, 1225] krb5_get_init_creds_password() should properly warn about password expiration. *  printf() argument mismatches in rpc unit tests fixed. *  ftpd no longer requires channel bindings, allowing easier use of ftp from behind a NAT. *  gssapi_generic.h should now work with C++. *  krb5_auth_con_gen_addrs() now properly returns errno instead of -1 if getpeername() fails. * [1178, 1228, 1244, 1246, 1249] Test suite has been stabilized somewhat. *  As part of the modernization of our usage of autoconf, AC_CONFIG_FILES is now used instead of passing a list of files to AC_OUTPUT. *  configure will no longer recurse out of the top of the source tree when attempting to locate the top of the source tree. *  Example krb5.conf file modified to include all enctypes supported by the release. *  The ASN.1 code no longer passes (harmless) uninitialized values around. *  libkadm5 now allows for persistent exclusive database locks. *  krb5_read_password() and des_read_password() are now implemented via krb5_prompter_posix(). *  For SAM challenges, omitted optional strings are no longer encoded as zero-length strings. *  Client-side support for SAM hardware-based preauth implemented. *  If the master KDC cannot be resolved, but a slave is reachable, the client library now returns the real error from the slave rather than the resolution failure from the master. Thanks to Ben Cox. *  Assigned numbers for SAM preauth have been corrected. sam-pk-for-sad implementation has been aligned. *  Profile-sharing optimizations from KfM have been merged. *  Windows calling conventions for krb5int_c_combine_keys() have been aligned. *  Incorrect sizes passed to memset() in combine_keys() operations have been corrected. *  Client credential lookup now gets new service tickets in preference to attempting to use expired ticketes. Thanks to Ben Cox. *  kshd accepts connections by IPv6 now. *  kvno manpage title fixed. *  Source files no longer explicitly attempt to declare errno. *  kadmind4 no longer leaves sa_flags uninitialized. *  krb5_send_tgs() no longer leaks the storage associated with the TGS-REQ. *  kadm5_get_either() no longer leaks regexp library memory. *  Output from krb5-config no longer contains spurious uses of $(PURE). *  The KDC no longer logs an inappropriate "no matching key" error when an encrypted timestamp preauth password is incorrect. *  gawk is no longer required for building kerbsrc.zip for the Windows build. *  gss_krb5_ccache_name() no longer attempts to return a pointer to freed memory. *  GSS_C_PROT_READY_FLAG is no longer asserted inappropriately during GSSAPI context establishment. *  krb5_gss_accept_sec_context() no longer attempts to validate a null credential if one is passed in. *  The "-a user" option to telnetd now does the right thing. Thanks to Nathan Neulinger. *  ksu no longer inappropriately syslogs to stderr. *  krb__get_srvtab_name() no longer leaks memory. *  Handling of SAM preauth no longer attempts to stuff a size_t into an unsigned int. *  BIND versions later than 8 now supported. *  The getaddrinfo() wrapper should work better on AIX. *  If DO_TIME is not set in the auth_context, and no replay cache is available, no replay cache will be used. *  libdb is no longer installed. If you installed krb5-1.3-alpha1, you should ensure that no spurious libdb is left in your install tree. *  ETYPE_INFO handling no longer goes into an infinite loop. *  libtelnet is now built using the same library build framework as the rest of the tree. Copyright Notice and Legal Administrivia ---------------------------------------- Copyright (C) 1985-2003 by the Massachusetts Institute of Technology. All rights reserved. Export of this software from the United States of America may require a specific license from the United States Government. It is the responsibility of any person or organization contemplating export to obtain such a license before exporting. WITHIN THAT CONSTRAINT, permission to use, copy, modify, and distribute this software and its documentation for any purpose and without fee is hereby granted, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation, and that the name of M.I.T. not be used in advertising or publicity pertaining to distribution of the software without specific, written prior permission. Furthermore if you modify this software you must label your software as modified software and not distribute it in such a fashion that it might be confused with the original MIT software. M.I.T. makes no representations about the suitability of this software for any purpose. It is provided "as is" without express or implied warranty. THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. Individual source code files are copyright MIT, Cygnus Support, OpenVision, Oracle, Sun Soft, FundsXpress, and others. Project Athena, Athena, Athena MUSE, Discuss, Hesiod, Kerberos, Moira, and Zephyr are trademarks of the Massachusetts Institute of Technology (MIT). No commercial use of these trademarks may be made without prior written permission of MIT. "Commercial use" means use of a name in a product or other for-profit manner. It does NOT prevent a commercial firm from referring to the MIT trademarks in order to convey information (although in doing so, recognition of their trademark status should be given). ---- The following copyright and permission notice applies to the OpenVision Kerberos Administration system located in kadmin/create, kadmin/dbutil, kadmin/passwd, kadmin/server, lib/kadm5, and portions of lib/rpc: Copyright, OpenVision Technologies, Inc., 1996, All Rights Reserved WARNING: Retrieving the OpenVision Kerberos Administration system source code, as described below, indicates your acceptance of the following terms. If you do not agree to the following terms, do not retrieve the OpenVision Kerberos administration system. You may freely use and distribute the Source Code and Object Code compiled from it, with or without modification, but this Source Code is provided to you "AS IS" EXCLUSIVE OF ANY WARRANTY, INCLUDING, WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, OR ANY OTHER WARRANTY, WHETHER EXPRESS OR IMPLIED. IN NO EVENT WILL OPENVISION HAVE ANY LIABILITY FOR ANY LOST PROFITS, LOSS OF DATA OR COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, INCLUDING, WITHOUT LIMITATION, THOSE RESULTING FROM THE USE OF THE SOURCE CODE, OR THE FAILURE OF THE SOURCE CODE TO PERFORM, OR FOR ANY OTHER REASON. OpenVision retains all copyrights in the donated Source Code. OpenVision also retains copyright to derivative works of the Source Code, whether created by OpenVision or by a third party. The OpenVision copyright notice must be preserved if derivative works are made based on the donated Source Code. OpenVision Technologies, Inc. has donated this Kerberos Administration system to MIT for inclusion in the standard Kerberos 5 distribution. This donation underscores our commitment to continuing Kerberos technology development and our gratitude for the valuable work which has been performed by MIT and the Kerberos community. ---- Portions contributed by Matt Crawford <firstname.lastname@example.org> were work performed at Fermi National Accelerator Laboratory, which is operated by Universities Research Association, Inc., under contract DE-AC02-76CHO3000 with the U.S. Department of Energy. ---- The implementation of the Yarrow pseudo-random number generator in src/lib/crypto/yarrow has the following copyright: Copyright 2000 by Zero-Knowledge Systems, Inc. Permission to use, copy, modify, distribute, and sell this software and its documentation for any purpose is hereby granted without fee, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation, and that the name of Zero-Knowledge Systems, Inc. not be used in advertising or publicity pertaining to distribution of the software without specific, written prior permission. Zero-Knowledge Systems, Inc. makes no representations about the suitability of this software for any purpose. It is provided "as is" without express or implied warranty. ZERO-KNOWLEDGE SYSTEMS, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL ZERO-KNOWLEDGE SYSTEMS, INC. BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTUOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. ---- The implementation of the AES encryption algorithm in src/lib/crypto/aes has the following copyright: Copyright (c) 2001, Dr Brian Gladman <email@example.com>, Worcester, UK. All rights reserved. LICENSE TERMS The free distribution and use of this software in both source and binary form is allowed (with or without changes) provided that: 1. distributions of this source code include the above copyright notice, this list of conditions and the following disclaimer; 2. distributions in binary form include the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other associated materials; 3. the copyright holder's name is not used to endorse products built using this software without specific written permission. DISCLAIMER This software is provided 'as is' with no explcit or implied warranties in respect of any properties, including, but not limited to, correctness and fitness for purpose. Acknowledgements ---------------- Appreciation Time!!!! There are far too many people to try to thank them all; many people have contributed to the development of Kerberos V5. This is only a partial listing.... Thanks to Paul Vixie and the Internet Software Consortium for funding the work of Barry Jaspan. This funding was invaluable for the OV administration server integration, as well as the 1.0 release preparation process. Thanks to John Linn, Scott Foote, and all of the folks at OpenVision Technologies, Inc., who donated their administration server for use in the MIT release of Kerberos. Thanks to Jeff Bigler, Mark Eichin, Marc Horowitz, Nancy Gilman, Ken Raeburn, and all of the folks at Cygnus Support, who provided innumerable bug fixes and portability enhancements to the Kerberos V5 tree. Thanks especially to Jeff Bigler, for the new user and system administrator's documentation. Thanks to Doug Engert from ANL for providing many bug fixes, as well as testing to ensure DCE interoperability. Thanks to Ken Hornstein at NRL for providing many bug fixes and suggestions, and for working on SAM preauthentication. Thanks to Matt Crawford at FNAL for bugfixes and enhancements. Thanks to Sean Mullan and Bill Sommerfeld from Hewlett Packard for their many suggestions and bug fixes. Thanks to Nalin Dahyabhai of RedHat and Chris Evans for locating and providing patches for numerous buffer overruns. Thanks to Christopher Thompson and Marcus Watts for discovering the ftpd security bug. Thanks to the members of the Kerberos V5 development team at MIT, both past and present: Danilo Almeida, Jay Berkenbilt, Richard Basch, Mitch Berger, John Carr, Don Davis, Alexandra Ellwood, Nancy Gilman, Matt Hancher, Sam Hartman, Paul Hill, Marc Horowitz, Eva Jacobus, Miroslav Jurisic, Barry Jaspan, Geoffrey King, John Kohl, Peter Litwack, Scott McGuire, Kevin Mitchell, Cliff Neuman, Paul Park, Ezra Peisach, Chris Provenzano, Ken Raeburn, Jon Rochlis, Jeff Schiller, Jen Selby, Brad Thompson, Harry Tsai, Ted Ts'o, Marshall Vale, Tom Yu.