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Bug 1905927 - [RFE] update keytab entries when renewing the machine account password
Summary: [RFE] update keytab entries when renewing the machine account password
Keywords:
Status: CLOSED MIGRATED
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: samba
Version: 8.4
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: rc
: 8.0
Assignee: Pavel Filipensky
QA Contact: Denis Karpelevich
URL:
Whiteboard: review
Depends On:
Blocks: 2211854
TreeView+ depends on / blocked
 
Reported: 2020-12-09 10:52 UTC by Sumit Bose
Modified: 2023-09-05 12:19 UTC (History)
6 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2023-09-05 12:19:51 UTC
Type: Story
Target Upstream Version:
Embargoed:
pm-rhel: mirror+

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Issue Tracker   RHEL-2226 0 None Migrated None 2023-09-05 12:19:47 UTC
Samba Project 6750 0 None None None 2020-12-09 10:52:10 UTC

Description Sumit Bose 2020-12-09 10:52:10 UTC 
Description of problem:
Current, when automatically updating the machine account password winbind only add the new password to the secrets.tdb but does not update the Kerberos keys in the keytab which are derived from the machine account password. As a result, after the update the keytab entries can neither be used for authentication nor to uncrypt and verify server tickets.

If 'kerberos method = secrets and keytab' (and maybe for 'system keytab' or 'dedicated keytab' as well?) winbind should create new entries in the keytab with updated KVNO and new hashes derived from the new machine account password.

Upstream ticket: https://bugzilla.samba.org/show_bug.cgi?id=6750
Comment 1 Andreas Schneider 2020-12-09 12:37:50 UTC 
We could get the service principal names from the keytab and then create new entries for each of them, however there is an issue with the kvno to get it right.
Comment 4 RHEL Program Management 2022-08-01 07:27:52 UTC 
After evaluating this issue, there are no plans to address it further or fix it in an upcoming release.  Therefore, it is being closed.  If plans change such that this issue will be fixed in an upcoming release, then the bug can be reopened.
Comment 6 Pavel Filipensky 2022-08-02 08:43:09 UTC 
Hi Andre,

thanks for spotting this. yes, this is a strech goal for Q3. I will reopen it.

Pavel
Comment 12 RHEL Program Management 2023-09-05 12:16:11 UTC 
Issue migration from Bugzilla to Jira is in process at this time. This will be the last message in Jira copied from the Bugzilla bug.
Comment 13 RHEL Program Management 2023-09-05 12:19:51 UTC 
This BZ has been automatically migrated to the issues.redhat.com Red Hat Issue Tracker. All future work related to this report will be managed there.

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