{"id":"CVE-2018-3968","state":"PUBLISHED","title":"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 enfor","description":"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.","publishedAt":"2019-03-21T16:36:03.000Z","updatedAt":"2024-08-05T04:57:24.503Z","severity":{"score":8.2,"label":"High","version":"3.0","vector":"CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","source":"talos"},"assigner":"talos","products":["n/a Das U-Boot"],"affected":[{"vendor":"n/a","product":"Das U-Boot","versions":[{"version":"Das U-Boot 2013.07-rc1 to 2014.07-rc2 OCTEON-SDK 3.1.2 to 5.1 CUJO Smart Firewall - Firmware version 7003","status":"affected"}]}],"references":["https://talosintelligence.com/vulnerability_reports/TALOS-2018-0633"],"weaknesses":[],"ingestedAt":"2026-10-29T19:44:49.047Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2018/3xxx/CVE-2018-3968.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2018-3968","state":"PUBLISHED","datePublished":"2019-03-21T16:36:03.000Z","dateUpdated":"2024-08-05T04:57:24.503Z","assignerShortName":"talos","assignerOrgId":"b86d76f8-0f8a-4a96-a78d-d8abfc7fc29b","dateReserved":"2018-01-02T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"n/a","product":"Das U-Boot","versions":[{"version":"Das U-Boot 2013.07-rc1 to 2014.07-rc2 OCTEON-SDK 3.1.2 to 5.1 CUJO Smart Firewall - Firmware version 7003","status":"affected"}]}],"references":[{"url":"https://talosintelligence.com/vulnerability_reports/TALOS-2018-0633","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_0":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":8.2,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"HIGH","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","version":"3.0"}}],"problemTypes":[{"descriptions":[{"description":"Improper Verification of Cryptographic Signature","lang":"en","type":"text"}]}],"providerMetadata":{"shortName":"talos","dateUpdated":"2022-04-19T18:07:11.000Z","orgId":"b86d76f8-0f8a-4a96-a78d-d8abfc7fc29b"},"datePublic":"2019-03-19T00:00:00.000Z","x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"talos-cna@cisco.com","ID":"CVE-2018-3968","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"Das U-Boot","version":{"version_data":[{"version_value":"Das U-Boot 2013.07-rc1 to 2014.07-rc2 OCTEON-SDK 3.1.2 to 5.1 CUJO Smart Firewall - Firmware version 7003"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"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."}]},"impact":{"cvss":{"baseScore":8.2,"baseSeverity":"High","vectorString":"CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","version":"3.0"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"Improper Verification of Cryptographic Signature"}]}]},"references":{"reference_data":[{"name":"https://talosintelligence.com/vulnerability_reports/TALOS-2018-0633","refsource":"MISC","url":"https://talosintelligence.com/vulnerability_reports/TALOS-2018-0633"}]}}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://talosintelligence.com/vulnerability_reports/TALOS-2018-0633","tags":["x_refsource_MISC","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-05T04:57:24.503Z"}}]}}}