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CVE-2022-3675

2.6 · LOW

Fedora CoreOS supports setting a GRUB bootloader password using a Butane config.

Published Nov 3, 2022CWE-20EPSS 0.18%

Overview

CVE-2022-3675 is a low-severity vulnerability. It was published on November 3, 2022 and has a CVSS 3.1 base score of 2.6 (LOW).

This vulnerability has a CVSS 3.1 base score of 2.6, rated LOW. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refdocs.fedoraproject.org/en-US/fedora-coreos/grub-password/GitHubgithub.com/coreos/fedora-coreos-tracker/issues/1333Reflists.fedoraproject.org/archives/list/[email protected]/thread/NHUCNH5Y4UH5DPUCXISYXXVA563TLFEJ/Refdocs.fedoraproject.org/en-US/fedora-coreos/grub-password/GitHubgithub.com/coreos/fedora-coreos-tracker/issues/1333Reflists.fedoraproject.org/archives/list/[email protected]/thread/NHUCNH5Y4UH5DPUCXISYXXVA563TLFEJ/

How CyberStrike helps

Frequently asked questions

What is CVE-2022-3675?

CVE-2022-3675 is a low-severity vulnerability. It was published on November 3, 2022 and has a CVSS 3.1 base score of 2.6 (LOW).

How severe is CVE-2022-3675?

This vulnerability has a CVSS 3.1 base score of 2.6, rated LOW. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2022-3675?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2022-3675?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-3675 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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