CVE-2021-46768 (GCVE-0-2021-46768)

Vulnerability from cvelistv5 – Published: 2023-01-10 20:56 – Updated: 2025-04-09 14:50
VLAI?
Summary
Insufficient input validation in SEV firmware may allow an attacker to perform out-of-bounds memory reads within the ASP boot loader, potentially leading to a denial of service.
Severity ?
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
  • n/a
Assigner
AMD
References
Impacted products
Vendor Product Version
AMD 2nd Gen EPYC Affected: various
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T05:17:42.402Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 5.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2021-46768",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-04-09T14:49:59.196190Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-125",
                "description": "CWE-125 Out-of-bounds Read",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-04-09T14:50:04.831Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "packageName": "AGESA",
          "platforms": [
            "x86"
          ],
          "product": "2nd Gen EPYC",
          "vendor": " AMD",
          "versions": [
            {
              "status": "affected",
              "version": "various "
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "packageName": "AGESA",
          "platforms": [
            "x86"
          ],
          "product": "3rd Gen EPYC",
          "vendor": "AMD",
          "versions": [
            {
              "status": "affected",
              "version": "various "
            }
          ]
        }
      ],
      "datePublic": "2023-01-10T17:30:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Insufficient input validation in SEV firmware may allow an attacker to perform out-of-bounds memory reads within the ASP boot loader, potentially leading to a denial of service.\u003cbr\u003e"
            }
          ],
          "value": "Insufficient input validation in SEV firmware may allow an attacker to perform out-of-bounds memory reads within the ASP boot loader, potentially leading to a denial of service.\n"
        }
      ],
      "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": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032"
        }
      ],
      "source": {
        "advisory": "AMD-SB-1032",
        "discovery": "UNKNOWN"
      },
      "x_generator": {
        "engine": "Vulnogram 0.1.0-dev"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "b58fc414-a1e4-4f92-9d70-1add41838648",
    "assignerShortName": "AMD",
    "cveId": "CVE-2021-46768",
    "datePublished": "2023-01-10T20:56:51.443Z",
    "dateReserved": "2022-03-31T16:50:27.872Z",
    "dateUpdated": "2025-04-09T14:50:04.831Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "fkie_nvd": {
      "configurations": "[{\"operator\": \"AND\", \"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:amd:romepi_firmware:*:*:*:*:*:*:*:*\", \"versionEndExcluding\": \"1.0.0.d\", \"matchCriteriaId\": \"88ECFD2A-170F-46B8-9013-4605ED25626F\"}]}, {\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": false, \"criteria\": \"cpe:2.3:h:amd:romepi:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"B936879F-731E-4991-ACBB-16643F629B41\"}]}]}, {\"operator\": \"AND\", \"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:amd:milanpi_firmware:*:*:*:*:*:*:*:*\", \"versionEndExcluding\": \"1.0.0.5\", \"matchCriteriaId\": \"46D6FD1B-4833-425D-A39E-2FC0A769C036\"}]}, {\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": false, \"criteria\": \"cpe:2.3:h:amd:milanpi:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"1F64A4AA-A66B-4B2E-B8F1-F332E3945903\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"Insufficient input validation in SEV firmware may allow an attacker to perform out-of-bounds memory reads within the ASP boot loader, potentially leading to a denial of service.\\n\"}, {\"lang\": \"es\", \"value\": \"Una validaci\\u00f3n de entrada insuficiente en el firmware SEV puede permitir que un atacante realice lecturas de memoria fuera de los l\\u00edmites dentro del cargador de arranque ASP, lo que podr\\u00eda provocar una denegaci\\u00f3n de servicio.\"}]",
      "id": "CVE-2021-46768",
      "lastModified": "2024-11-21T06:34:40.917",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"baseScore\": 5.5, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 3.6}]}",
      "published": "2023-01-11T08:15:13.163",
      "references": "[{\"url\": \"https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032\", \"source\": \"psirt@amd.com\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}]",
      "sourceIdentifier": "psirt@amd.com",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-125\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-46768\",\"sourceIdentifier\":\"psirt@amd.com\",\"published\":\"2023-01-11T08:15:13.163\",\"lastModified\":\"2025-04-09T15:15:44.690\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Insufficient input validation in SEV firmware may allow an attacker to perform out-of-bounds memory reads within the ASP boot loader, potentially leading to a denial of service.\\n\"},{\"lang\":\"es\",\"value\":\"Una validaci\u00f3n de entrada insuficiente en el firmware SEV puede permitir que un atacante realice lecturas de memoria fuera de los l\u00edmites dentro del cargador de arranque ASP, lo que podr\u00eda provocar una denegaci\u00f3n de servicio.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-125\"}]},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-125\"}]}],\"configurations\":[{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:amd:romepi_firmware:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"1.0.0.d\",\"matchCriteriaId\":\"88ECFD2A-170F-46B8-9013-4605ED25626F\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:amd:romepi:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"B936879F-731E-4991-ACBB-16643F629B41\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:amd:milanpi_firmware:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"1.0.0.5\",\"matchCriteriaId\":\"46D6FD1B-4833-425D-A39E-2FC0A769C036\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:amd:milanpi:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"1F64A4AA-A66B-4B2E-B8F1-F332E3945903\"}]}]}],\"references\":[{\"url\":\"https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032\",\"source\":\"psirt@amd.com\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]}]}}",
    "vulnrichment": {
      "containers": "{\"cna\": {\"affected\": [{\"defaultStatus\": \"unaffected\", \"packageName\": \"AGESA\", \"platforms\": [\"x86\"], \"product\": \"2nd Gen EPYC\", \"vendor\": \" AMD\", \"versions\": [{\"status\": \"affected\", \"version\": \"various \"}]}, {\"defaultStatus\": \"unaffected\", \"packageName\": \"AGESA\", \"platforms\": [\"x86\"], \"product\": \"3rd Gen EPYC\", \"vendor\": \"AMD\", \"versions\": [{\"status\": \"affected\", \"version\": \"various \"}]}], \"datePublic\": \"2023-01-10T17:30:00.000Z\", \"descriptions\": [{\"lang\": \"en\", \"supportingMedia\": [{\"base64\": false, \"type\": \"text/html\", \"value\": \"Insufficient input validation in SEV firmware may allow an attacker to perform out-of-bounds memory reads within the ASP boot loader, potentially leading to a denial of service.\u003cbr\u003e\"}], \"value\": \"Insufficient input validation in SEV firmware may allow an attacker to perform out-of-bounds memory reads within the ASP boot loader, potentially leading to a denial of service.\\n\"}], \"providerMetadata\": {\"orgId\": \"b58fc414-a1e4-4f92-9d70-1add41838648\", \"shortName\": \"AMD\", \"dateUpdated\": \"2023-01-11T07:01:59.843Z\"}, \"references\": [{\"tags\": [\"vendor-advisory\"], \"url\": \"https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032\"}], \"source\": {\"advisory\": \"AMD-SB-1032\", \"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\": \"2024-08-04T05:17:42.402Z\"}, \"title\": \"CVE Program Container\", \"references\": [{\"tags\": [\"vendor-advisory\", \"x_transferred\"], \"url\": \"https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1032\"}]}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.5, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-46768\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-04-09T14:49:59.196190Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-125\", \"description\": \"CWE-125 Out-of-bounds Read\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-04-09T14:49:47.596Z\"}}]}",
      "cveMetadata": "{\"cveId\": \"CVE-2021-46768\", \"assignerOrgId\": \"b58fc414-a1e4-4f92-9d70-1add41838648\", \"state\": \"PUBLISHED\", \"assignerShortName\": \"AMD\", \"dateReserved\": \"2022-03-31T16:50:27.872Z\", \"datePublished\": \"2023-01-10T20:56:51.443Z\", \"dateUpdated\": \"2025-04-09T14:50:04.831Z\"}",
      "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 observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.