=====================================================================

                           CERT-Renater

               Note d'Information No. 2013/VULN070
_____________________________________________________________________

DATE                : 25/02/2013

HARDWARE PLATFORM(S): /

OPERATING SYSTEM(S) : Systems running KERBEROS versions 5 prior to
                           RELEASE 1.11.1.

======================================================================
http://mailman.mit.edu/pipermail/kerberos-announce/2013q1/000142.html
______________________________________________________________________


The MIT Kerberos Team announces the availability of MIT Kerberos 5
Release 1.11.1.  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 1.11.1
====================================

You may retrieve the Kerberos 5 Release 1.11.1 source from the
following URL:

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

The homepage for the krb5-1.11.1 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 1.11.1 (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

======================================================================

=========================================================
Serveur de référence du CERT-Renater
https://services.renater.fr/ssi/
=========================================================
+ CERT-RENATER          | tel : 01-53-94-20-44          +
+ 23 - 25 Rue Daviel    | fax : 01-53-94-20-41          +
+ 75013 Paris           | email: certsvp@renater.fr     +
=========================================================