FKIE_CVE-2021-28500

Vulnerability from fkie_nvd - Published: 2022-01-14 20:15 - Updated: 2024-11-21 05:59
Severity ?
9.1 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
An issue has recently been discovered in Arista EOS where the incorrect use of EOS's AAA API’s by the OpenConfig and TerminAttr agents could result in unrestricted access to the device for local users with nopassword configuration.
References
psirt@arista.comhttps://www.arista.com/en/support/advisories-notices/security-advisories/13449-security-advisory-0071Exploit, Mitigation, Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.arista.com/en/support/advisories-notices/security-advisories/13449-security-advisory-0071Exploit, Mitigation, Patch, Vendor Advisory
Impacted products
Vendor Product Version
arista eos *
arista eos *
arista eos *
arista eos *
arista eos *
arista eos *
arista eos *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "16E0E3AB-D008-41F2-9659-CA7083A42134",
              "versionEndExcluding": "4.20",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "85A99B12-87F0-480F-BC75-EBB932C109EE",
              "versionEndIncluding": "4.21.14m",
              "versionStartIncluding": "4.21.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*",
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              "versionEndIncluding": "4.22.11m",
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              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "B7015243-49E3-4EA5-9609-B44F4E0C46D4",
              "versionEndIncluding": "4.23.8m",
              "versionStartIncluding": "4.23.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "E4D33863-7458-4B0D-990F-85F78D02F2AC",
              "versionEndIncluding": "4.24.6m",
              "versionStartIncluding": "4.24.6.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "13308BB3-A584-4487-8EF1-D2A41C0FE3C1",
              "versionEndIncluding": "4.25.4m",
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              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*",
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              "versionEndIncluding": "4.26.1f",
              "versionStartIncluding": "4.26.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue has recently been discovered in Arista EOS where the incorrect use of EOS\u0027s AAA API\u2019s by the OpenConfig and TerminAttr agents could result in unrestricted access to the device for local users with nopassword configuration."
    },
    {
      "lang": "es",
      "value": "Se ha detectado recientemente un problema en Arista EOS donde el uso incorrecto de las API AAA de EOS por parte de los agentes OpenConfig y TerminAttr podr\u00eda resultar en un acceso no restringido al dispositivo para usuarios locales con una configuraci\u00f3n sin contrase\u00f1a"
    }
  ],
  "id": "CVE-2021-28500",
  "lastModified": "2024-11-21T05:59:47.440",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 6.9,
          "confidentialityImpact": "COMPLETE",
          "integrityImpact": "COMPLETE",
          "vectorString": "AV:L/AC:M/Au:N/C:C/I:C/A:C",
          "version": "2.0"
        },
        "exploitabilityScore": 3.4,
        "impactScore": 10.0,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.1,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.2,
        "source": "psirt@arista.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2022-01-14T20:15:10.217",
  "references": [
    {
      "source": "psirt@arista.com",
      "tags": [
        "Exploit",
        "Mitigation",
        "Patch",
        "Vendor Advisory"
      ],
      "url": "https://www.arista.com/en/support/advisories-notices/security-advisories/13449-security-advisory-0071"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Mitigation",
        "Patch",
        "Vendor Advisory"
      ],
      "url": "https://www.arista.com/en/support/advisories-notices/security-advisories/13449-security-advisory-0071"
    }
  ],
  "sourceIdentifier": "psirt@arista.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-285"
        }
      ],
      "source": "psirt@arista.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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  • 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.
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