CVEvulnerability

CVE-2022-3675

5.5 MEDIUM Published 2022-11-03 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2022-11-03
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
2.6 LOW — CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
CVSS 3.1 ([email protected])
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Weaknesses
CWE-20, CWE-306

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.

Affected configurations

• redhat fedora coreos (>= 36.20220820.3.0 < 37.20221031.1.0)

Related

Weakness · CWE (2)

  • CWE-20 Improper Input Validation weakness
  • CWE-306 Missing Authentication for Critical Functionality weakness

References