CVE-2021-46795 (GCVE-0-2021-46795)
Vulnerability from cvelistv5
Published
2023-01-10 20:53
Modified
2025-04-09 15:13
Severity ?
4.7 (Medium) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
  • n/a
Summary
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.
References
Impacted products
Vendor Product Version
AMD Ryzen 5000 Series Version: various
Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T05:17:42.312Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1031"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "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"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2021-46795",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-04-09T15:13:22.667024Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-367",
                "description": "CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-04-09T15:13:26.855Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "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."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-01-11T07:01:59.843Z",
        "orgId": "b58fc414-a1e4-4f92-9d70-1add41838648",
        "shortName": "AMD"
      },
      "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"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "b58fc414-a1e4-4f92-9d70-1add41838648",
    "assignerShortName": "AMD",
    "cveId": "CVE-2021-46795",
    "datePublished": "2023-01-10T20:53:25.868Z",
    "dateReserved": "2022-05-04T18:14:06.438Z",
    "dateUpdated": "2025-04-09T15:13:26.855Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-46795\",\"sourceIdentifier\":\"psirt@amd.com\",\"published\":\"2023-01-11T08:15:13.347\",\"lastModified\":\"2025-04-09T15:15:45.247\",\"vulnStatus\":\"Modified\",\"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.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":4.7,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.0,\"impactScore\":3.6},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":4.7,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.0,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-367\"}]},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-367\"}]}],\"configurations\":[{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:amd:comboam4v2_pi_firmware:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"1.2.0.5\",\"matchCriteriaId\":\"6D075A02-6278-43AB-8108-66DBA2FA3F50\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:amd:comboam4v2_pi:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"DAC265C7-A9A3-4156-9AB3-8F975AED6764\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:amd:renoirpi-fp6_firmware:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"1.0.0.7\",\"matchCriteriaId\":\"0E0B55C4-452F-42AD-B00F-4A61CEED1337\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:amd:comboam4v2_pi:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"DAC265C7-A9A3-4156-9AB3-8F975AED6764\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:amd:cezannepi-fp6_firmware:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"1.0.0.6\",\"matchCriteriaId\":\"5CEF152D-7D7D-4632-BCDA-FA46A8D8AA12\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:amd:cezannepi-fp6:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"DBE05F55-E039-486A-B3E0-E1CC3BF81049\"}]}]}],\"references\":[{\"url\":\"https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1031\",\"source\":\"psirt@amd.com\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1031\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1031\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-04T05:17:42.312Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 4.7, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"HIGH\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-46795\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-04-09T15:13:22.667024Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-367\", \"description\": \"CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-04-09T15:13:17.717Z\"}}], \"cna\": {\"source\": {\"advisory\": \"AMD-SB-1031\", \"discovery\": \"UNKNOWN\"}, \"affected\": [{\"vendor\": \" AMD\", \"product\": \"Ryzen 5000 Series\", \"versions\": [{\"status\": \"affected\", \"version\": \"various \"}], \"platforms\": [\"x86\"], \"packageName\": \"AGESA\", \"defaultStatus\": \"affected\"}, {\"vendor\": \" AMD\", \"product\": \"Ryzen 3000 Series \", \"versions\": [{\"status\": \"affected\", \"version\": \"various \"}], \"platforms\": [\"x86\"], \"packageName\": \"AGESA\", \"defaultStatus\": \"unaffected\"}], \"datePublic\": \"2023-01-10T17:30:00.000Z\", \"references\": [{\"url\": \"https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1031\"}], \"x_generator\": {\"engine\": \"Vulnogram 0.1.0-dev\"}, \"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.\", \"supportingMedia\": [{\"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.\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"text\", \"description\": \"n/a\"}]}], \"providerMetadata\": {\"orgId\": \"b58fc414-a1e4-4f92-9d70-1add41838648\", \"shortName\": \"AMD\", \"dateUpdated\": \"2023-01-11T07:01:59.843Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2021-46795\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-04-09T15:13:26.855Z\", \"dateReserved\": \"2022-05-04T18:14:06.438Z\", \"assignerOrgId\": \"b58fc414-a1e4-4f92-9d70-1add41838648\", \"datePublished\": \"2023-01-10T20:53:25.868Z\", \"assignerShortName\": \"AMD\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.