krb5-1.18.2 is released
ghudson at mit.edu
Fri May 22 12:34:14 EDT 2020
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The MIT Kerberos Team announces the availability of MIT Kerberos 5
Release 1.18.2. Please see below for a list of some major changes
included, or consult the README file in the source tree for a more
detailed list of significant changes.
RETRIEVING KERBEROS 5 RELEASE 1.18.2
You may retrieve the Kerberos 5 Release 1.18.2 source from the
The homepage for the krb5-1.18.2 release is:
Further information about Kerberos 5 may be found at the following
DES no longer supported
Beginning with the krb5-1.18 release, single-DES encryption types are
no longer supported.
Major changes in 1.18.2 (2020-05-21)
This is a bug fix release.
* Fix a SPNEGO regression where an acceptor using the default
credential would improperly filter mechanisms, causing a negotiation
* Fix a bug where the KDC would fail to issue tickets if the local
krbtgt principal's first key has a single-DES enctype.
* Add stub functions to allow old versions of OpenSSL libcrypto to
link against libkrb5.
* Fix a NegoEx bug where the client name and delegated credential
might not be reported.
Major changes in 1.18.1 (2020-04-13)
This is a bug fix release.
* Fix a crash when qualifying short hostnames when the system has no
primary DNS domain.
* Fix a regression when an application imports "service@" as a GSS
host-based name for its acceptor credential handle.
* Fix KDC enforcement of auth indicators when they are modified by the
* Fix removal of require_auth string attributes when the LDAP KDB
module is used.
* Fix a compile error when building with musl libc on Linux.
* Fix a compile error when building with gcc 4.x.
* Change the KDC constrained delegation precedence order for
consistency with Windows KDCs.
Major changes in 1.18 (2020-02-12)
* Remove support for single-DES encryption types.
* Change the replay cache format to be more efficient and robust.
Replay cache filenames using the new format end with ".rcache2" by
* setuid programs will automatically ignore environment variables that
normally affect krb5 API functions, even if the caller does not use
* Add an "enforce_ok_as_delegate" krb5.conf relation to disable
credential forwarding during GSSAPI authentication unless the KDC
sets the ok-as-delegate bit in the service ticket.
* Use the permitted_enctypes krb5.conf setting as the default value
for default_tkt_enctypes and default_tgs_enctypes.
* Implement krb5_cc_remove_cred() for all credential cache types.
* Add the krb5_pac_get_client_info() API to get the client account
name from a PAC.
* Add KDC support for S4U2Self requests where the user is identified
by X.509 certificate. (Requires support for certificate lookup from
a third-party KDB module.)
* Remove support for an old ("draft 9") variant of PKINIT.
* Add support for Microsoft NegoEx. (Requires one or more third-party
GSS modules implementing NegoEx mechanisms.)
* Honor the transited-policy-checked ticket flag on application
servers, eliminating the requirement to configure capaths on
servers in some scenarios.
* Add support for "dns_canonicalize_hostname=fallback""`, causing
host-based principal names to be tried first without DNS
canonicalization, and again with DNS canonicalization if the
un-canonicalized server is not found.
* Expand single-component hostnames in host-based principal names when
DNS canonicalization is not used, adding the system's first DNS
search path as a suffix. Add a "qualify_shortname" krb5.conf
relation to override this suffix or disable expansion.
* The libkrb5 serialization code (used to export and import krb5 GSS
security contexts) has been simplified and made type-safe.
* The libkrb5 code for creating KRB-PRIV, KRB-SAFE, and KRB-CRED
messages has been revised to conform to current coding practices.
* The test suite has been modified to work with macOS System Integrity
* The test suite incorporates soft-pkcs11 so that PKINIT PKCS11
support can always be tested.
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