Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Fedora Project / CoreOS | affected testing 36.20220906.2.0 and later before testing 36.20221030.2.0; affected next 36.20220906.1.0 and later before next 37.20221031.1.0; affected stable 36.20220820.3.0 and later before stable 36.20221014.3.0 |
CWE
CWE-20
References
- https://github.com/coreos/fedora-coreos-tracker/issues/1333
- https://lists.fedoraproject.org/archives/list/coreos-status@lists.fedoraproject.org/thread/NHUCNH5Y4UH5DPUCXISYXXVA563TLFEJ/
- https://docs.fedoraproject.org/en-US/fedora-coreos/grub-password/
ADP enrichment
No English description supplied.
No English description supplied.
No references supplied.