Bug 2027156 (CVE-2021-44225)

Summary:	CVE-2021-44225 keepalived: dbus access control bypass
Product:	[Other] Security Response	Reporter:	Marian Rehak <mrehak>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	bperkins, cluster-maint, matthias, rohara
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in keepalived, where an improper authentication vulnerability allows an unprivileged user to change properties that could lead to an access-control bypass.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2022-05-11 22:15:55 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:	2027157, 2027158, 2028350, 2028351
Bug Blocks:	2027159

Description Marian Rehak 2021-11-29 03:15:44 UTC

The D-Bus policy does not sufficiently restrict the message destination, allowing any user to inspect and manipulate any property. This leads to access-control bypass in some situations in which an unrelated D-Bus system service has a settable (writable) property

Upstream Reference:

https://github.com/acassen/keepalived/commit/7977fec0be89ae6fe87405b3f8da2f0b5e415e3d
https://github.com/acassen/keepalived/pull/2063

Comment 1 Marian Rehak 2021-11-29 03:16:02 UTC

Created keepalived tracking bugs for this issue:

Affects: fedora-33 [bug 2027157]
Affects: fedora-34 [bug 2027158]

Comment 4 errata-xmlrpc 2022-05-10 14:21:33 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2022:1930 https://access.redhat.com/errata/RHSA-2022:1930

Comment 5 Product Security DevOps Team 2022-05-11 22:15:53 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-2021-44225