Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.

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Bug 1685142

Summary:	The cached passwd structure about a user is not updated if a user gets authenticated through PAM
Product:	Red Hat Enterprise Linux 8	Reporter:	Jakub Jelen <jjelen>
Component:	openssh	Assignee:	Jakub Jelen <jjelen>
Status:	CLOSED WONTFIX	QA Contact:	BaseOS QE Security Team <qe-baseos-security>
Severity:	unspecified	Docs Contact:
Priority:	low
Version:	8.1	CC:	asn, ssorce, szidek, tmraz
Target Milestone:	rc	Keywords:	Patch, Reopened, Triaged
Target Release:	8.1	Flags:	jjelen: mirror+
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:	1674541	Environment:
Last Closed:	2021-02-01 07:37:37 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:	1674541, 1682500
Bug Blocks:	1664402

Comment 1 Simo Sorce 2019-03-21 12:24:19 UTC

Perhaps openssh should simply delay looking up the user, sounds like it could cause disclosure about user's existing if openssh causes the system to perform network searches before authentication.

Comment 2 Jakub Jelen 2019-03-21 13:06:53 UTC

With the caching, I am not sure whether it can disclosure something. OpenSSH does not know where does the information pulled from getpwnam() come from (local passwd or AD) and additionally, it really needs to know these information before authentication, for example to know where to look for authorized keys file in the users home directory.

Comment 8 Jakub Jelen 2021-01-05 16:28:38 UTC

Andreas, is this still an issue? Do you have somebody who could verify the proposed patch I have in comment #5?

Comment 9 RHEL Program Management 2021-02-01 07:37:37 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.