Kerberos 5 Release 1.10.1

• Announcement
• README file
• Known Bugs
• Documentation
• Retrieving

Kerberos 5 Release 1.10.1 is now available

The MIT Kerberos Team announces the availability of the krb5-1.10.1 release. The detached PGP signature is available without going through the download page, if you wish to verify the authenticity of a distribution you have obtained elsewhere.

Please see the README file for a more complete list of changes.

You may also see the current full list of fixed bugs tracked in our RT bugtracking system.

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 now defaults to "false" beginning with krb5-1.8.

Major changes in 1.10.1

This is a bugfix release.

• Fix access controls for KDB string attributes [CVE-2012-1012]
• Make the ASN.1 encoding of key version numbers interoperate with Windows Read-Only Domain Controllers
• Avoid generating spurious password expiry warnings in cases where the KDC sends an account expiry time without a password expiry time.

Major changes in 1.10

Code quality:

• Fix MITKRB5-SA-2011-006 and MITKRB5-SA-2011-007 KDC denial of service vulnerabilities [CVE-2011-1527 CVE-2011-1528 CVE-2011-1529 CVE-2011-1530].
• Update the Fortuna implementation to more accurately implement the description in Cryptography Engineering, and make it the default PRNG.
• Add an alternative PRNG that relies on the OS native PRNG.

Developer experience:

• Add the ability for GSSAPI servers to use any keytab key for a specified service, if the server specifies a host-based name with no hostname component.
• In the build system, identify the source files needed for per-message processing within a kernel and ensure that they remain independent.
• Allow rd_safe and rd_priv to ignore the remote address.
• Rework KDC and kadmind networking code to use an event loop architecture.
• Add a plugin interface for providing configuration information.

Administrator experience:

• Add more complete support for renaming principals.
• Add the profile variable ignore_acceptor_hostname in libdefaults. If set, GSSAPI will ignore the hostname component of acceptor names supplied by the server, allowing any keytab key matching the service to be used.
• Add support for string attributes on principal entries.
• Allow password changes to work over NATs.

End-user experience:

• Add the DIR credential cache type, which can hold a collection of credential caches.
• Enhance kinit, klist, and kdestroy to support credential cache collections if the cache type supports it.
• Add the kswitch command, which changes the selected default cache within a collection.
• Add heuristic support for choosing client credentials based on the service realm.
• Add support for $HOME/.k5identity, which allows credential choice based on configured rules.
• Add support for localization. (No translations are provided in this release, but the infrastructure is present for redistributors to supply them.)

Protocol evolution:

• Make PKINIT work with FAST in the client library.

Known Bugs

Known bugs reported against krb5-1.10.1 are listed here.

Documentation for krb5-1.10.1

Please note that the HTML versions of these documents are converted from texinfo, and that the conversion is imperfect. If you want PDF, PostScript, or GNU info versions, please download the documentation tarball.

• install guide
• user guide
• admin guide
• documentation tarball

Retrieving Kerberos 5 Release 1.10.1

You may retrieve the Kerberos 5 Release 1.10.1 source from here. If you need to acquire the sources from some other distribution site, you may verify them against the detached PGP signature for krb5-1.10.1.