krb5-1.11.6 is released

Tom Yu tlyu at mit.edu
Wed Feb 25 18:48:15 EST 2015 

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The MIT Kerberos Team announces the availability of MIT Kerberos 5
Release 1.11.6.  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 1.11.6
====================================

You may retrieve the Kerberos 5 Release 1.11.6 source from the
following URL:

        http://web.mit.edu/kerberos/dist/

The homepage for the krb5-1.11.6 release is:

        http://web.mit.edu/kerberos/krb5-1.11/

Further information about Kerberos 5 may be found at the following
URL:

        http://web.mit.edu/kerberos/

and at the MIT Kerberos Consortium web site:

        http://www.kerberos.org/

DES transition
==============

The Data Encryption Standard (DES) is widely recognized as weak.  The
krb5-1.7 release contains measures to encourage sites to migrate away
- From using single-DES cryptosystems.  Among these is a configuration
variable that enables "weak" enctypes, which defaults to "false"
beginning with krb5-1.8.

Major changes in 1.11.6 (2015-02-24)
====================================

This is a bugfix release.  The krb5-1.11 release series has reached
the end of its maintenance period, and krb5-1.11.6 is the last planned
release in the krb5-1.11 series.  For new deployments, installers
should prefer the krb5-1.13 release series or later.

* Work around a gcc optimizer bug that could cause DB2 KDC database
  operations to spin in an infinite loop

* Fix a backward compatibility problem with the LDAP KDB schema that
  could prevent krb5-1.11 and later from decoding entries created by
  krb5-1.6.

* Handle certain invalid RFC 1964 GSS tokens correctly to avoid
  invalid memory reference vulnerabilities.  [CVE-2014-4341
  CVE-2014-4342]

* Fix memory management vulnerabilities in GSSAPI SPNEGO.
  [CVE-2014-4343 CVE-2014-4344]

* Fix buffer overflow vulnerability in LDAP KDB back end.
  [CVE-2014-4345]

* Fix multiple vulnerabilities in the LDAP KDC back end.
  [CVE-2014-5354 CVE-2014-5353]

* Fix multiple kadmind vulnerabilities, some of which are based in the
  gssrpc library. [CVE-2014-5352 CVE-2014-9421 CVE-2014-9422
  CVE-2014-9423]

Major changes in 1.11.5 (2014-01-21)
====================================

* Make KDC log service principal names more consistently during some
  error conditions, instead of "<unknown server>"

* Fix some GSSAPI bugs.

* Improve documentation.

Major changes in 1.11.4 (2013-11-04)
====================================

This is a bugfix release.

* Fix a KDC null pointer dereference [CVE-2013-1417] that could affect
  realms with an uncommon configuration.

* Fix a KDC null pointer dereference [CVE-2013-1418] that could affect
  KDCs that serve multiple realms.

* Fix a number of bugs related to KDC master key rollover.

Major changes in 1.11.3 (2013-06-03)
====================================

This is a bugfix release.

* Fix a UDP ping-pong vulnerability in the kpasswd (password changing)
  service.  [CVE-2002-2443]

* Improve interoperability with some Windows native PKINIT clients.

Major changes in 1.11.2 (2013-04-12)
====================================

This is a bugfix release.

* Incremental propagation could erroneously act as if a slave's
  database were current after the slave received a full dump that
  failed to load.

* gss_import_sec_context incorrectly set internal state that
  identifies whether an imported context is from an interposer
  mechanism or from the underlying mechanism.

Major changes in 1.11.1 (2013-02-21)
====================================

This is a bugfix release.

* Restore capability for multi-hop SAM-2 preauth exchanges, which
  krb5-1.11 had inadvertently removed.

* Fix a null pointer dereference in the KDC PKINIT code
  [CVE-2013-1415].

Major changes in 1.11 (2012-12-17)
==================================

Additional background information on these changes may be found at

    http://k5wiki.kerberos.org/wiki/Release_1.11

and

    http://k5wiki.kerberos.org/wiki/Category:Release_1.11_projects

Code quality:

* Improve ASN.1 support code, making it table-driven for decoding as
  well as encoding

* Refactor parts of KDC

Developer experience:

* Documentation consolidation

* Add a new API krb5_kt_have_content() to determine whether a keytab
  exists and contains any entries.

* Add a new API krb5_cccol_have_content() to determine whether the
  ccache collection contains any credentials.

* Add a new API krb5_kt_client_default() to resolve the default client
  keytab.

* Add new APIs gss_export_cred and gss_import_cred to serialize and
  unserialize GSSAPI credentials.

* Add a krb5_get_init_creds_opt_set_in_ccache() option.

* Add get_cc_config() and set_cc_config() clpreauth callbacks for
  getting string attribute values from an in_ccache and storing them
  in an out_ccache, respectively.

* Add a plugin interface for GSSAPI interposer mechanisms.

* Add an optional responder callback to the krb5_get_init_creds
  functions. The responder callback can consider and answer all
  preauth-related questions at once, and can process more complicated
  questions than the prompter.

* Add a method to the clpreauth interface to allow modules to supply
  response items for consideration by the responder callback.

* Projects/Password_response_item

* Add GSSAPI extensions to allow callers to specify credential store
  locations when acquiring or storing credentials

* Add a new API krb5_kt_client_default() to resolve the default client
  keytab.

Administrator experience:

* Documentation consolidation

* Add parameter expansion for default_keytab_name and
  default_client_keytab_name profile variables.

* Add new default_ccache_name profile variable to override the
  built-in default credential cache name.

* Add configure-time support for changing the built-in ccache and
  keytab names.

* Add krb5-config options for displaying the built-in ccache and
  keytab names.

* In the default build, use the system's built-in ccache and keytab
  names if they can be discovered using krb5-config.

* Add support for a "default client keytab". Its location is
  determined by the KRB5_CLIENT_KTNAME environment variable, the
  default_client_keytab profile relation, or a hardcoded path (TBD).

* GSSAPI initiator applications can now acquire credentials
  automatically from the default client keytab, if one is available.

* Add client support for FAST OTP (RFC 6560)

End-user experience:

* Documentation consolidation

* Store metadata in the ccache about how a credential was acquired, to
  improve the user's experience when reacquiring

* Projects/Extensible_Policy

Performance:

* Improve KDC lookaside cache performance

Protocol evolution:

* Add client support for FAST OTP (RFC 6560)

* Build Camellia encryption support by default
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