Skip to content
Fencer Vulns
medium 5.4

CVE-2021-44225 json

In Keepalived through 2.2.4, the D-Bus policy does not sufficiently restrict the message destination, allowing any user to inspect and mani…

published 2021-11-26 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-31074

cvss
5.4
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 66%
public exploits
0
none known

Summary

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

Patch / fix

  • keepalived Debian 14, Debian 13, Debian 12 1:2.2.4-0.2

debian advisories DEBIAN-CVE-2021-44225

  • keepalived Ubuntu 18.04 LTS 1:1.3.9-1ubuntu0.18.04.3
  • keepalived Ubuntu 20.04 LTS 1:2.0.19-2ubuntu0.1
  • keepalived Ubuntu 22.04 LTS 1:2.2.4-0.2

ubuntu advisories UBUNTU-CVE-2021-44225

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • keepalived RHEL 8 2.1.5-8.el8

red hat advisories RHSA-2022:1930

  • keepalived OpenStack Cloud Crowbar 9, OpenStack Cloud 9 2.0.19-3.6.1
  • keepalived OpenStack Cloud Crowbar 8, OpenStack Cloud 8, HPE Helion OpenStack 8 2.0.19-3.9.1
  • keepalived SLE High Availability Extension 15 SP4, openSUSE Leap 15.4 2.2.2-150400.3.5.1
  • keepalived SLE High Availability Extension 15 SP3, SLE High Availability Extension 15 SP2, SLE High Availability Extension 15 SP1 +1 more 2.0.19-150100.3.6.1

suse advisories SUSE-SU-2022:3235-1SUSE-SU-2022:3234-1SUSE-SU-2022:3232-1SUSE-SU-2022:2923-1

  • keepalived openSUSE Tumbleweed 2.2.7-1.1

opensuse advisories openSUSE-SU-2024:11888-1

  • keepalived AlmaLinux 8 2.1.5-8.el8

almalinux advisories ALSA-2022:1930

  • keepalived Rocky Linux 8 2.1.5-8.el8

rocky linux advisories RLSA-2022:1930

  • keepalived Alpine 3.24, Alpine 3.23, Alpine 3.22 +6 more 2.2.7-r0

alpine advisories ALPINE-CVE-2021-44225

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • keepalived CBL-Mariner 2.0 2.2.7-1

azure linux advisories AZL-6508

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

  • keepalived Arch Linux 2.2.5-1

arch linux advisories AVG-2587

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2021-44225 updated cvss 7.5

keepalived: dbus access control bypass

  • Red Hat Enterprise Linux 6 keepalived Red Hat Enterprise Linux 7 keepalived
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux AppStream (v. 8) keepalived 2.1.5-8.el8
    fixed: vendor fix RHSA-2022:1930
  • Red Hat Enterprise Linux 9 keepalived
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.12% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
NVD 2.0 5.5 AV:N/AC:L/Au:S/C:P/I:P/A:N

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.