{
  "id": "CVE-2021-28505",
  "sourceIdentifier": "psirt@arista.com",
  "published": "2022-04-14T21:15:08.427",
  "lastModified": "2022-04-26T17:09:51.847",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "On affected Arista EOS platforms, if a VXLAN match rule exists in an IPv4 access-list that is applied to the ingress of an L2 or an L3 port/SVI, the VXLAN rule and subsequent ACL rules in that access list will ignore the specified IP protocol."
    },
    {
      "lang": "es",
      "value": "En las plataformas Arista EOS afectadas, si se presenta una regla de coincidencia VXLAN en una lista de acceso IPv4 que es aplicada a la entrada de un puerto/SVI L2 o L3, la regla VXLAN y las reglas ACL posteriores en esa lista de acceso ignorar\u00e1n el protocolo IP especificado"
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "availabilityImpact": "NONE",
          "baseScore": 7.5,
          "baseSeverity": "HIGH"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6
      },
      {
        "source": "psirt@arista.com",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "availabilityImpact": "NONE",
          "baseScore": 7.5,
          "baseSeverity": "HIGH"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6
      }
    ],
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
          "accessVector": "NETWORK",
          "accessComplexity": "LOW",
          "authentication": "NONE",
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "availabilityImpact": "NONE",
          "baseScore": 5.0
        },
        "baseSeverity": "MEDIUM",
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-863"
        }
      ]
    },
    {
      "source": "psirt@arista.com",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-284"
        }
      ]
    }
  ],
  "configurations": [
    {
      "operator": "AND",
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "4.26",
              "versionEndExcluding": "4.26.4m",
              "matchCriteriaId": "2A8E9397-1B74-4A40-B8E3-7088A5A45749"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "4.27",
              "versionEndExcluding": "4.27.1f",
              "matchCriteriaId": "F85F865B-F425-46DD-B9D4-C96AE100F39F"
            }
          ]
        },
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": false,
              "criteria": "cpe:2.3:h:arista:ccs-710p-12:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "3671762A-7E5C-47BF-AE10-64F19C82EEDF"
            },
            {
              "vulnerable": false,
              "criteria": "cpe:2.3:h:arista:ccs-710p-16p:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "AC8C4306-2090-4170-B316-79613AA19392"
            },
            {
              "vulnerable": false,
              "criteria": "cpe:2.3:h:arista:ccs-720xp-24y6:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "45460268-9775-4047-B36D-1A62480047C7"
            },
            {
              "vulnerable": false,
              "criteria": "cpe:2.3:h:arista:ccs-720xp-24zy4:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "7A3886D9-AB47-4E4B-95E6-39E31100FE62"
            },
            {
              "vulnerable": false,
              "criteria": "cpe:2.3:h:arista:ccs-720xp-48y6:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "4D21D207-AD0F-4745-B123-A7219DD6512F"
            },
            {
              "vulnerable": false,
              "criteria": "cpe:2.3:h:arista:ccs-720xp-48zc2:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "B317039B-7365-4348-8286-39128C4B363F"
            },
            {
              "vulnerable": false,
              "criteria": "cpe:2.3:h:arista:ccs-720xp-96zc2:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "2E58B31B-C6C1-4EDC-8D4F-1528C9B1CB8A"
            },
            {
              "vulnerable": false,
              "criteria": "cpe:2.3:h:arista:ccs-722xpm-48y4:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "074CBF00-1D2C-4388-874A-62453B1D4564"
            },
            {
              "vulnerable": false,
              "criteria": "cpe:2.3:h:arista:ccs-722xpm-48zy8:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "D15C1D00-5F35-4F67-8075-D84D3BD9CE73"
            },
            {
              "vulnerable": false,
              "criteria": "cpe:2.3:h:arista:dcs-7010tx-48:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "9CB43CD4-C96F-483C-B743-3D81C9A65EDF"
            },
            {
              "vulnerable": false,
              "criteria": "cpe:2.3:h:arista:dcs-7050cx3-32s:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "E7C133EA-753A-4770-AEF8-11AC8E901F1A"
            },
            {
              "vulnerable": false,
              "criteria": "cpe:2.3:h:arista:dcs-7050cx3m-32s:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "5D11D6B9-1E68-4A65-A9CD-8DD299EC6B25"
            },
            {
              "vulnerable": false,
              "criteria": "cpe:2.3:h:arista:dcs-7050sx3-48c8:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "11B7A876-587F-4C51-BE49-C82F6508C536"
            },
            {
              "vulnerable": false,
              "criteria": "cpe:2.3:h:arista:dcs-7050sx3-48yc12:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "EEB629B5-7E62-4972-A288-EF76FFA3E441"
            },
            {
              "vulnerable": false,
              "criteria": "cpe:2.3:h:arista:dcs-7050sx3-48yc8:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "33079D44-2255-4682-A4BC-4B071D8EDCFA"
            },
            {
              "vulnerable": false,
              "criteria": "cpe:2.3:h:arista:dcs-7050sx3-96yc8:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "69F1C5CA-19D7-4F40-93EB-97F44DCD5DCB"
            },
            {
              "vulnerable": false,
              "criteria": "cpe:2.3:h:arista:dcs-7050tx3-48c8:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "418E2ED9-B9FC-438D-9F7C-8D6DB7E297AA"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://www.arista.com/en/support/advisories-notices/security-advisories/15267-security-advisory-0073",
      "source": "psirt@arista.com",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ]
    }
  ]
}