Description
Fedora CoreOS supports setting a GRUB bootloader password
using a Butane config. When this feature is enabled, GRUB requires a password to access the
GRUB command-line, modify kernel command-line arguments, or boot
non-default OSTree deployments. Recent Fedora CoreOS releases have a
misconfiguration which allows booting non-default OSTree deployments
without entering a password. This allows someone with access to the
GRUB menu to boot into an older version of Fedora CoreOS, reverting
any security fixes that have recently been applied to the machine. A
password is still required to modify kernel command-line arguments and
to access the GRUB command line.



Published: 2022-11-03
Score: 2.6 Low
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2022-43034 Fedora CoreOS supports setting a GRUB bootloader password using a Butane config. When this feature is enabled, GRUB requires a password to access the GRUB command-line, modify kernel command-line arguments, or boot non-default OSTree deployments. Recent Fedora CoreOS releases have a misconfiguration which allows booting non-default OSTree deployments without entering a password. This allows someone with access to the GRUB menu to boot into an older version of Fedora CoreOS, reverting any security fixes that have recently been applied to the machine. A password is still required to modify kernel command-line arguments and to access the GRUB command line.
History

Fri, 02 May 2025 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Subscriptions

Redhat Fedora Coreos
cve-icon MITRE

Status: PUBLISHED

Assigner: fedora

Published:

Updated: 2025-05-02T18:53:10.153Z

Reserved: 2022-10-24T06:40:10.332Z

Link: CVE-2022-3675

cve-icon Vulnrichment

Updated: 2024-08-03T01:14:03.251Z

cve-icon NVD

Status : Modified

Published: 2022-11-03T18:15:14.627

Modified: 2024-11-21T07:20:00.590

Link: CVE-2022-3675

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses