Alexander Bokovoy
dbf5df4a66
NIST SP 800-63-3B sets a recommendation to have password length upper bound limited in A.2: https://pages.nist.gov/800-63-3/sp800-63b.html#appA Users should be encouraged to make their passwords as lengthy as they want, within reason. Since the size of a hashed password is independent of its length, there is no reason not to permit the use of lengthy passwords (or pass phrases) if the user wishes. Extremely long passwords (perhaps megabytes in length) could conceivably require excessive processing time to hash, so it is reasonable to have some limit. FreeIPA already applied 256 characters limit for non-random passwords set through ipa-getkeytab tool. The limit was not, however, enforced in other places. MIT Kerberos limits the length of the password to 1024 characters in its tools. However, these tools (kpasswd and 'cpw' command of kadmin) do not differentiate between a password larger than 1024 and a password of 1024 characters. As a result, longer passwords are silently cut off. To prevent silent cut off for user passwords, use limit of 1000 characters. Thus, this patch enforces common limit of 1000 characters everywhere: - LDAP-based password changes - LDAP password change control - LDAP ADD and MOD operations on clear-text userPassword - Keytab setting with ipa-getkeytab - Kerberos password setting and changing Fixes: https://pagure.io/freeipa/issue/8268 Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com> Signed-off-by: Rob Crittenden <rcritten@redhat.com> Reviewed-by: Simo Sorce <ssorce@redhat.com> Reviewed-By: Simo Sorce <ssorce@redhat.com>
FreeIPA Server
FreeIPA allows Linux administrators to centrally manage identity, authentication and access control aspects of Linux and UNIX systems by providing simple to install and use command line and web based management tools.
FreeIPA is built on top of well known Open Source components and standard protocols with a very strong focus on ease of management and automation of installation and configuration tasks.
FreeIPA can seamlessly integrate into an Active Directory environment via cross-realm Kerberos trust or user synchronization.
Benefits
FreeIPA:
- Allows all your users to access all the machines with the same credentials and security settings
- Allows users to access personal files transparently from any machine in an authenticated and secure way
- Uses an advanced grouping mechanism to restrict network access to services and files only to specific users
- Allows central management of security mechanisms like passwords, SSH Public Keys, SUDO rules, Keytabs, Access Control Rules
- Enables delegation of selected administrative tasks to other power users
- Integrates into Active Directory environments
Components
The FreeIPA project provides unified installation and management tools for the following components:
- LDAP Server - based on the 389 project
- KDC - based on MIT Kerberos implementation
- PKI based on Dogtag project
- Samba libraries for Active Directory integration
- DNS Server based on BIND and the Bind-DynDB-LDAP plugin
Project Website
Releases, announcements and other information can be found on the IPA server project page at http://www.freeipa.org/ .
Documentation
The most up-to-date documentation can be found at http://freeipa.org/page/Documentation .
Quick Start
To get started quickly, start here: http://www.freeipa.org/page/Quick_Start_Guide
For developers
- Building FreeIPA from source
- http://www.freeipa.org/page/Build
- See the BUILD.txt file in the source root directory
Licensing
Please see the file called COPYING.
Contacts
- If you want to be informed about new code releases, bug fixes, security fixes, general news and information about the IPA server subscribe to the freeipa-announce mailing list at https://www.redhat.com/mailman/listinfo/freeipa-interest/ .
- If you have a bug report please submit it at: https://pagure.io/freeipa/issues
- If you want to participate in actively developing IPA please subscribe to the freeipa-devel mailing list at https://lists.fedoraproject.org/archives/list/freeipa-devel@lists.fedorahosted.org/ or join us in IRC at irc://irc.freenode.net/freeipa