CVE-2022-3675

Published on: Not Yet Published

Last Modified on: 03/01/2023 06:04:00 PM UTC

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Certain versions of Fedora Coreos from Redhat contain the following vulnerability:

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.

  • CVE-2022-3675 has been assigned by URL Logo [email protected] to track the vulnerability - currently rated as MEDIUM severity.
  • Affected Vendor/Software: URL Logo Fedora Project - CoreOS version = testing 36.20220906.2.0 and later
  • Affected Vendor/Software: URL Logo Fedora Project - CoreOS version = next 36.20220906.1.0 and later
  • Affected Vendor/Software: URL Logo Fedora Project - CoreOS version = stable 36.20220820.3.0 and later

CVSS3 Score: 5.5 - MEDIUM

Attack
Vector
Attack
Complexity
Privileges
Required
User
Interaction
LOCAL LOW LOW NONE
Scope Confidentiality
Impact
Integrity
Impact
Availability
Impact
UNCHANGED NONE HIGH NONE

CVE References

Description Tags Link
Setting a GRUB password :: Fedora Docs docs.fedoraproject.org
text/html
URL Logo MISC docs.fedoraproject.org/en-US/fedora-coreos/grub-password/
Non-default OSTree deployments accessible without GRUB password (CVE-2022-3675) - coreos-status - Fedora Mailing-Lists lists.fedoraproject.org
text/html
URL Logo MISC lists.fedoraproject.org/archives/list/[email protected]/thread/NHUCNH5Y4UH5DPUCXISYXXVA563TLFEJ/
Non-default OSTree deployments accessible without GRUB password (CVE-2022-3675) · Issue #1333 · coreos/fedora-coreos-tracker · GitHub github.com
text/html
URL Logo MISC github.com/coreos/fedora-coreos-tracker/issues/1333

Exploit/POC from Github

This repository contains a collection of data files on known Common Vulnerabilities and Exposures (CVEs). Each file i…

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
ApplicationRedhatFedora CoreosAllAllAllAll
  • cpe:2.3:a:redhat:fedora_coreos:*:*:*:*:*:*:*:*:

Social Mentions

Source Title Posted (UTC)
Twitter Icon @CVEreport CVE-2022-3675 : Fedora CoreOS supports setting a GRUB bootloader password using a Butane config. When this feature… twitter.com/i/web/status/1… 2022-11-03 18:03:27
Reddit Logo Icon /r/netcve CVE-2022-3675 2022-11-03 19:38:05
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