Vulnerability-Lookup

GHSA-747Q-WQ4P-22G3

Vulnerability from github – Published: 2022-11-03 19:00 – Updated: 2022-11-04 19:01

Details

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.

Severity

5.5 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2022-3675"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20",
      "CWE-306",
      "CWE-862"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-11-03T18:15:00Z",
    "severity": "MODERATE"
  },
  "details": "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.",
  "id": "GHSA-747q-wq4p-22g3",
  "modified": "2022-11-04T19:01:17Z",
  "published": "2022-11-03T19:00:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-3675"
    },
    {
      "type": "WEB",
      "url": "https://github.com/coreos/fedora-coreos-tracker/issues/1333"
    },
    {
      "type": "WEB",
      "url": "https://docs.fedoraproject.org/en-US/fedora-coreos/grub-password"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/coreos-status@lists.fedoraproject.org/thread/NHUCNH5Y4UH5DPUCXISYXXVA563TLFEJ"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2022-3675 (GCVE-0-2022-3675)

Vulnerability from cvelistv5 – Published: 2022-11-03 17:25 – Updated: 2025-05-02 18:53

Summary

Severity

2.6 (Low)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-05-02 18:53 UTC

CWE

CWE-20 - Improper Input Validation

Assigner

fedora redhat root

References

3 references

URL	Tags
https://github.com/coreos/fedora-coreos-tracker/i…	issue-tracking
https://lists.fedoraproject.org/archives/list/cor…	release-notes
https://docs.fedoraproject.org/en-US/fedora-coreo…	related

Impacted products

1 product

Vendor	Product	Version
Fedora Project	CoreOS	Affected: testing 36.20220906.2.0 and later , < testing 36.20221030.2.0 (fix) Affected: next 36.20220906.1.0 and later , < next 37.20221031.1.0 (fix) Affected: stable 36.20220820.3.0 and later , < stable 36.20221014.3.0 (fix)

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JSON

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.