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Bug 892197

Summary:	Incorrect principal searched for in keytab
Product:	Red Hat Enterprise Linux 6	Reporter:	Jakub Hrozek <jhrozek>
Component:	sssd	Assignee:	Jakub Hrozek <jhrozek>
Status:	CLOSED ERRATA	QA Contact:	Kaushik Banerjee <kbanerje>
Severity:	unspecified	Docs Contact:
Priority:	high
Version:	6.4	CC:	dpal, grajaiya, jgalipea, okos, pbrezina, tlavigne
Target Milestone:	rc
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	sssd-1.9.2-65.el6	Doc Type:	Bug Fix
Doc Text:	No documentation needed.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2013-02-21 09:43:07 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	895654

Description Jakub Hrozek 2013-01-05 20:13:14 UTC

This bug is created as a clone of upstream ticket:
https://fedorahosted.org/sssd/ticket/1740

SSSD attempts to use fqdn$@DOMAIN rather than shorthostname$@DOMAIN.  This means it fails to find a usable credential on a machine joined to Active Directory, and is looking for a principal that's very unlikely to exist.

Since 4ee7f390af4193656c1e6ba45c9c3c14dd64a8a9, searching for *$ has been removed, so the short form is never found.  As a result, AD configurations that worked prior to this update that don't explicitly set ldap_sasl_authid now fail to find a suitable credential.

Comment 2 Jakub Hrozek 2013-01-07 14:51:59 UTC

To test, enroll a machine with AD.

Check the keytab with klist -k, usually the keytab will contain both host/hostname@REALM and SHORTNAME$@REALM. Without the patch, you'll have to specify ldap_sasl_authid manually, with the patch, the SSSD should select the correct principal on its own.

Comment 5 Kaushik Banerjee 2013-01-14 12:50:28 UTC

Verified in version 1.9.2-68

Report from beaker automation run:
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
:: [   LOG    ] :: adprovider_009 bz892197 ad_domain is valid and principal should default to SHORTHOST$
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

:: [   LOG    ] :: Sleeping for 5 seconds
:: [   PASS   ] :: File '/var/log/sssd/sssd_ADTEST.log' should contain 'Trying to find principal DELL-T7400-01$@SSSDAD.COM'
:: [   PASS   ] :: File '/var/log/sssd/sssd_ADTEST.log' should contain 'Principal matched to the sample (DELL-T7400-01$@SSSDAD.COM)'
:: [   PASS   ] :: Running 'getent passwd testuser01'
:: [   PASS   ] :: Authentication successful, as expected
:: [   PASS   ] :: Running 'auth_success testuser01 Secret123'
:: [   LOG    ] :: Duration: 18s
:: [   LOG    ] :: Assertions: 5 good, 0 bad
:: [   PASS   ] :: RESULT: adprovider_009 bz892197 ad_domain is valid and principal should default to SHORTHOST$

Comment 6 errata-xmlrpc 2013-02-21 09:43:07 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHSA-2013-0508.html