Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.

RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.

Bug 1898924

Summary:	openldap behaviour change: TLS certificate chain is ignored by openssl code
Product:	Red Hat Enterprise Linux 8	Reporter:	Graham Leggett <minfrin>
Component:	openldap	Assignee:	LDAP Maintainers <ldap-maint>
Status:	CLOSED WONTFIX	QA Contact:	RHDS QE <ds-qe-bugs>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	8.6	Flags:	pm-rhel: mirror+
Target Milestone:	rc
Target Release:	8.0
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2022-05-18 07:27:32 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:

Description Graham Leggett 2020-11-18 10:37:49 UTC

Description of problem:

After the switch of crypto library in openldap from NSS to openssl, the behaviour of intermediate certificates has changed.

Where previously a certificate and chain would be read from the certificate PEM file or NSS database automatically, the openldap code in the openssl case reads the certificate only and ignores the rest of the certificates in the chain.

This causes outages when machines are upgraded from pre-rhel7.5 to rhel7.5 or higher through routine patching.

Version-Release number of selected component (if applicable):

RHEL7.5 and up.

How reproducible:

Always.

Steps to Reproduce:
1. Deploy an LDAP infrastructure that uses client certificates with intermediate certificates using pre RHEL7.5 versions of code.
2. Conduct routine patch.
3.

Actual results:

Outage - SSL connections that previously worked now fail with "untrusted certificate" errors.

Expected results:

Patching doesn't take out a whole platform.

Additional info:

The problem exists in openldap on this line:

https://github.com/openldap/openldap/blame/b06f5b0493937fc28f2cc86df1d7f464aa4504d8/libraries/libldap/tls_o.c#L387

To fix this problem, use SSL_CTX_use_certificate_chain_file() as recommended by OpenSSL.

Comment 2 RHEL Program Management 2022-05-18 07:27:32 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.