Vulnerability Details 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 8.4%
CVSS Severity
CVSS v3 Score 2.6
Products affected by CVE-2022-3675
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cpe:2.3:a:redhat:fedora_coreos:36.20220820.3.0