CVE-2022-3675
Fedora CoreOS supports setting a GRUB bootloader password using a Butane config. When this feature is enabled, GRUB requires a password to…
- Published
- Updated
- Reserved
- Assigned by
- fedora
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| fedoraCNA (assigner) | 3.1 | Low2.6 | CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N |
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |
- EPSS (exploitation in 30 days)
- 0.18% · top 92% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 2.6.
Weakness
Affected products
- affected testing 36.20220906.2.0 and later – < testing 36.20221030.2.0
- affected next 36.20220906.1.0 and later – < next 37.20221031.1.0
- affected stable 36.20220820.3.0 and later – < stable 36.20221014.3.0
References (3)
- https://github.com/coreos/fedora-coreos-tracker/issues/1333 (opens in a new tab)issue-trackingx_transferred
- https://lists.fedoraproject.org/archives/list/[email protected]/thread/NHUCNH5Y4UH5DPUCXISYXXVA563TLFEJ/ (opens in a new tab)release-notesx_transferred
- https://docs.fedoraproject.org/en-US/fedora-coreos/grub-password/ (opens in a new tab)relatedx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2022-3675)Record last updated .