Security advisory

{
  "id": "3393cd6fd7a9907de5f69c0a57734f2932c086f1ff47a03cd37bb4041b3121ba",
  "url": "https://osv.dev/vulnerability/CVE-2021-3917",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-3917",
    "summary": "A flaw was found in the coreos-installer, where it writes the Ignition config to the target system with world-readable access permissions. This flaw allows a local attacker to have read access to potentially sensitive data. The highest threat from this vulnerability is to confidentiality.",
    "evidence": "osv:CVE-2021-3917",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2021-3917",
      "aliases": [
        "CVE-2021-3917",
        "GHSA-862g-9h5m-m3qv"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/coreos/coreos-installer",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "5906495eaa0d661019059c9d07872724d0e154ff"
                },
                {
                  "fixed": "2a36405339c87b16ed6c76e91ad5b76638fbdb0c"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:redhat:coreos-installer:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.10.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "2a36405339c87b16ed6c76e91ad5b76638fbdb0c"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.7.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-3917.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:53.037170648Z",
      "provider": "osv",
      "references": [
        "https://bugzilla.redhat.com/show_bug.cgi?id=2018478",
        "https://access.redhat.com/security/cve/CVE-2021-3917",
        "https://github.com/coreos/coreos-installer/commit/2a36405339c87b16ed6c76e91ad5b76638fbdb0c",
        "https://github.com/coreos/fedora-coreos-tracker/issues/889"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-3917",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 386360,
  "published_at": "2022-08-23T20:15:08.36+00:00"
}