krb5-1.8.5 is released

[Tom Yu]

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The MIT Kerberos Team announces the availability of MIT Kerberos 5
Release 1.8.5.  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 1.8.5
===================================

You may retrieve the Kerberos 5 Release 1.8.5 source from the
following URL:

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

The homepage for the krb5-1.8.5 release is:

        http://web.mit.edu/kerberos/krb5-1.8/

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 krb5-1.8 release disables single-DES cryptosystems by default.  As
a result, you may need to add the libdefaults setting
"allow_weak_crypto = true" to communicate with existing Kerberos
infrastructures if they do not support stronger ciphers.

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 now defaults to "false"
beginning with krb5-1.8.  The krb5-1.8 release includes additional
measures to ease the transition away from single-DES.  These
additional measures include:

* enctype config enhancements (so you can do "DEFAULT +des", etc.)
* new API to allow applications (e.g. AFS) to explicitly reenable weak
  crypto
* easier kadmin history key changes

Major changes in 1.8.5
======================

This is primarily a bugfix release.

* Fix MITKRB5-SA-2011-006 KDC denial of service vulnerabilities
  [CVE-2011-1528 CVE-2011-1529 CVE-2011-4151].
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