Security advisory

{
  "id": "df988eb8c49c4e5abb03af058d7576a8970f96fce064db08ff3ef55fce4082c5",
  "url": "https://osv.dev/vulnerability/CVE-2018-3968",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2018-3968",
    "summary": "An exploitable vulnerability exists in the verified boot protection of the Das U-Boot from version 2013.07-rc1 to 2014.07-rc2. The affected versions lack proper FIT signature enforcement, which allows an attacker to bypass U-Boot's verified boot and execute an unsigned kernel, embedded in a legacy image format. To trigger this vulnerability, a local attacker needs to be able to supply the image to boot.",
    "evidence": "osv:CVE-2018-3968",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2018-3968",
      "aliases": [
        "CVE-2018-3968"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/u-boot/u-boot",
              "type": "GIT",
              "events": [
                {
                  "introduced": "62c175fbb8a0f9a926c88294ea9f7e88eb898f6c"
                },
                {
                  "last_affected": "524123a70761110c5cf3ccc5f52f6d4da071b959"
                },
                {
                  "introduced": "216a793cc1702227fd4ad624080f585038d1fa45"
                },
                {
                  "last_affected": "0116f40bbc269c57566d69e0db8cb9da2e194d33"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:denx:u-boot:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2013.07"
                      },
                      {
                        "last_affected": "2014.07"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:denx:u-boot:2013.07:rc1:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2013.07-rc1"
                      },
                      {
                        "last_affected": "2013.07-rc1"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:denx:u-boot:2013.07:rc2:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2013.07-rc2"
                      },
                      {
                        "last_affected": "2013.07-rc2"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:denx:u-boot:2013.07:rc3:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2013.07-rc3"
                      },
                      {
                        "last_affected": "2013.07-rc3"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:denx:u-boot:2014.07:rc1:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2014.07-rc1"
                      },
                      {
                        "last_affected": "2014.07-rc1"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:denx:u-boot:2014.07:rc2:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2014.07-rc2"
                      },
                      {
                        "last_affected": "2014.07-rc2"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "2013.07-rc1",
            "2013.07-rc2",
            "2013.07-rc3",
            "2014.07-rc1",
            "2014.07-rc2",
            "v2014.07-rc2",
            "v2014.07-rc1",
            "v2014.04",
            "v2014.01-rc1",
            "v2013.10",
            "v2013.10-rc4",
            "v2013.10-rc3",
            "v2013.10-rc2",
            "v2013.10-rc1",
            "v2013.07"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-3968.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:18.880170899Z",
      "provider": "osv",
      "references": [
        "https://talosintelligence.com/vulnerability_reports/TALOS-2018-0633"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2018-3968",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 429880,
  "published_at": "2019-03-21T17:29:00.493+00:00"
}