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Bug 2078920

Summary: PAM Kerberos authentication incorrectly fails with a clock skew error
Product: Red Hat Enterprise Linux 8 Reporter: Pavel Filipensky <pfilipen>
Component: sambaAssignee: Andreas Schneider <asn>
Status: CLOSED NOTABUG QA Contact: sssd-qe <sssd-qe>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 8.7CC: asn, dkarpele, gdeschner, jarrpa, sssd-qe
Target Milestone: rcKeywords: Triaged, ZStream
Target Release: ---Flags: pm-rhel: mirror+
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: 2076505 Environment:
Last Closed: 2022-04-26 14:27:04 UTC Type: Bug
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: 2076504, 2076505, 2078918    
Bug Blocks:    

Description Pavel Filipensky 2022-04-26 13:40:07 UTC
+++ This bug was initially created as a clone of Bug #2076505 +++

+++ This bug was initially created as a clone of Bug #2076504 +++

for 8.6 zstream

Description of problem:

From https://bugzilla.samba.org/show_bug.cgi?id=15046:

The samba testsuite has found that PAM Kerberos authentication can fail with an incorrect clock skew too great error. In the samba testsuite the server and the client run in the same machine.

The reason is that the time_offset passed to kerberos_return_pac() in winbindd_raw_kerberos_login() can be wrong. This time_offset is retrieved from an ADS_STRUCT directly casted from domain->private_data, when domain->private_data can point to a winbind_internal_pipes struct.

We have to remove the private_data field from winbindd_domain struct and use typed pointers.