Bug 1640820 (CVE-2018-16838)

Summary:	CVE-2018-16838 sssd: improper implementation of GPOs due to too restrictive permissions
Product:	[Other] Security Response	Reporter:	Laura Pardo <lpardo>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	abhgupta, abokovoy, bmcclain, dbaker, dblechte, dfediuck, eedri, grajaiya, jhrozek, jokerman, lpardo, lslebodn, meissner, mgoldboi, michal.skrivanek, mupadhye, mzidek, pbrezina, rdlugyhe, rharwood, sbonazzo, sbose, security-response-team, sherold, ssorce, sssd-maint, sthangav, trankin, tscherf, yturgema
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	No Doc Update
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-08-06 13:20:02 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:	1660874, 1669357, 1712000
Bug Blocks:	1640821

Description Laura Pardo 2018-10-18 20:17:18 UTC

A flaw was found in sssd Group Policy Objects implementation. When the GPO is not readable by SSSD due to a too strict permission settings on the server side, SSSD will allow all authenticated users to login instead of denying access.

Comment 8 Cedric Buissart 2019-05-20 15:38:32 UTC

Upstream fix : https://pagure.io/SSSD/sssd/c/ad058011b6b75b15c674be46a3ae9b3cc5228175

Comment 10 Dhananjay Arunesh 2019-07-05 03:07:16 UTC

Reference:
https://pagure.io/SSSD/sssd/issue/3867

Comment 12 errata-xmlrpc 2019-08-06 12:24:21 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2019:2177 https://access.redhat.com/errata/RHSA-2019:2177

Comment 13 Product Security DevOps Team 2019-08-06 13:20:02 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2018-16838

Comment 14 errata-xmlrpc 2019-08-12 11:54:13 UTC

This issue has been addressed in the following products:

  Red Hat Virtualization 4 for Red Hat Enterprise Linux 7

Via RHSA-2019:2437 https://access.redhat.com/errata/RHSA-2019:2437

Comment 15 errata-xmlrpc 2019-11-05 21:24:05 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2019:3651 https://access.redhat.com/errata/RHSA-2019:3651