CVE-2021-44225

Publication date 26 November 2021

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

In Keepalived through 2.2.4, 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

Status

Show unmaintained releases

Package	Ubuntu Release	Status
keepalived	22.04 LTS jammy	Fixed 1:2.2.4-0.2
	21.10 impish	Fixed 1:2.1.5-0.2ubuntu1.1
	21.04 hirsute	Fixed 1:2.1.5-0.2ubuntu0.1
	20.04 LTS focal	Fixed 1:2.0.19-2ubuntu0.1
	18.04 LTS bionic	Fixed 1:1.3.9-1ubuntu0.18.04.3
	16.04 LTS xenial	Not affected
	14.04 LTS trusty	Not affected

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
keepalived	Upstream: 7977fec

Severity score breakdown

Parameter	Value
Base score	5.4 · Medium
Attack vector	Network
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	Low
Integrity impact	Low
Availability impact	None
Vector	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

References

Related Ubuntu Security Notices (USN)

USN-5188-1
Keepalived vulnerability
13 December 2021