CVE Vulnerability

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 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.

5.5 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://docs.fedoraproject.org/en-US/fedora-coreos/grub-password/ Vendor Advisory
https://lists.fedoraproject.org/archives/list/coreos-status@lists.fedoraproject.org/thread/NHUCNH5Y4UH5DPUCXISYXXVA563TLFEJ/ Mailing List Vendor Advisory
https://github.com/coreos/fedora-coreos-tracker/issues/1333 Issue Tracking Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:redhat:fedora_coreos:*:*:*:*:*:*:*:*
Information

Published : 2022-11-03 06:15

Updated : 2023-01-25 02:01

NVD link : CVE-2022-3675

Mitre link : CVE-2022-3675

Products Affected
No products.
CWE
CWE-862