{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2021-46795", "assignerOrgId": "b58fc414-a1e4-4f92-9d70-1add41838648", "state": "PUBLISHED", "assignerShortName": "AMD", "dateReserved": "2022-05-04T18:14:06.438Z", "datePublished": "2023-01-10T20:53:25.868Z", "dateUpdated": "2024-08-04T05:17:42.312Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "affected", "packageName": "AGESA", "platforms": ["x86"], "product": "Ryzen 5000 Series", "vendor": " AMD", "versions": [{"status": "affected", "version": "various "}]}, {"defaultStatus": "unaffected", "packageName": "AGESA", "platforms": ["x86"], "product": "Ryzen 3000 Series ", "vendor": " AMD", "versions": [{"status": "affected", "version": "various "}]}], "datePublic": "2023-01-10T17:30:00.000Z", "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "A TOCTOU (time-of-check to time-of-use) vulnerability exists where an attacker may use a compromised BIOS to cause the TEE OS to read memory out of bounds that could potentially result in a denial of service."}], "value": "A TOCTOU (time-of-check to time-of-use) vulnerability exists where an attacker may use a compromised BIOS to cause the TEE OS to read memory out of bounds that could potentially result in a denial of service."}], "providerMetadata": {"orgId": "b58fc414-a1e4-4f92-9d70-1add41838648", "shortName": "AMD", "dateUpdated": "2023-01-11T07:01:59.843980Z"}, "references": [{"url": "https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1031"}], "source": {"advisory": "AMD-SB-1031", "discovery": "UNKNOWN"}, "x_generator": {"engine": "Vulnogram 0.1.0-dev"}, "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}]}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:17:42.312Z"}, "title": "CVE Program Container", "references": [{"url": "https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1031", "tags": ["x_transferred"]}]}]}}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:amd:comboam4v2_pi_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "6D075A02-6278-43AB-8108-66DBA2FA3F50", "versionEndExcluding": "1.2.0.5", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:amd:comboam4v2_pi:-:*:*:*:*:*:*:*", "matchCriteriaId": "DAC265C7-A9A3-4156-9AB3-8F975AED6764", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:amd:renoirpi-fp6_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "0E0B55C4-452F-42AD-B00F-4A61CEED1337", "versionEndExcluding": "1.0.0.7", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:amd:comboam4v2_pi:-:*:*:*:*:*:*:*", "matchCriteriaId": "DAC265C7-A9A3-4156-9AB3-8F975AED6764", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:amd:cezannepi-fp6_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "5CEF152D-7D7D-4632-BCDA-FA46A8D8AA12", "versionEndExcluding": "1.0.0.6", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:amd:cezannepi-fp6:-:*:*:*:*:*:*:*", "matchCriteriaId": "DBE05F55-E039-486A-B3E0-E1CC3BF81049", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A TOCTOU (time-of-check to time-of-use) vulnerability exists where an attacker may use a compromised BIOS to cause the TEE OS to read memory out of bounds that could potentially result in a denial of service."}, {"lang": "es", "value": "Existe una vulnerabilidad TOCTOU (time-of-check to time-of-use) donde un atacante puede usar un BIOS comprometido para hacer que TEE OS lea la memoria fuera de los l\u00edmites, lo que potencialmente podr\u00eda resultar en una denegaci\u00f3n de servicio."}], "id": "CVE-2021-46795", "lastModified": "2023-01-20T18:36:19.837", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 4.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2023-01-11T08:15:13.347", "references": [{"source": "psirt@amd.com", "tags": ["Vendor Advisory"], "url": "https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1031"}], "sourceIdentifier": "psirt@amd.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-367"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "hw: amd: TOCTOU (time-of-check to time-of-use) vulnerability cause memory out of bound results in a denial of service", "id": "2164382", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2164382"}, "csaw": false, "cvss3": {"cvss3_base_score": "1.9", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L", "status": "draft"}, "details": ["A TOCTOU (time-of-check to time-of-use) vulnerability exists where an attacker may use a compromised BIOS to cause the TEE OS to read memory out of bounds that could potentially result in a denial of service.", "A Time-of-check to time-of-use (TOCTOU) vulnerability exists in hw. This flaw allows an attacker to use a compromised BIOS to cause the trusted execution environment (TEE) operating system to read memory out-of-bounds, potentially resulting in a denial of service."], "mitigation": {"lang": "en:us", "value": "Please contact AMD for more updates on this flaw."}, "name": "CVE-2021-46795", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2023-01-10T06:30:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-46795\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-46795\nhttps://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1031"], "threat_severity": "Low"}