Bug 2027156 (CVE-2021-44225) - CVE-2021-44225 keepalived: dbus access control bypass
Summary: CVE-2021-44225 keepalived: dbus access control bypass
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2021-44225
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2027157 2027158 Red Hat2028350 Red Hat2028351
Blocks: Embargoed2027159
TreeView+ depends on / blocked
 
Reported: 2021-11-29 03:15 UTC by Marian Rehak
Modified: 2022-05-17 10:14 UTC (History)
4 users (show)

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.
Clone Of:
Environment:
Last Closed: 2022-05-11 22:15:55 UTC

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2022:1930 0 None None None 2022-05-10 14:21:35 UTC

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
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