{
  "id": "CVE-2021-22955",
  "sourceIdentifier": "support@hackerone.com",
  "published": "2021-12-07T14:15:08.890",
  "lastModified": "2021-12-08T19:43:41.437",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "A unauthenticated denial of service vulnerability exists in Citrix ADC <13.0-83.27, <12.1-63.22 and 11.1-65.23 when configured as a VPN (Gateway) or AAA virtual server could allow an attacker to cause a temporary disruption of the Management GUI, Nitro API, and RPC communication."
    },
    {
      "lang": "es",
      "value": "Se presenta una vulnerabilidad de denegaci\u00f3n de servicio no autenticada en Citrix ADC versiones anteriores a 13.0-83.27, versiones anteriores a 12.1-63.22 y 11.1-65.23 que, cuando es configurado como servidor virtual VPN (Gateway) o AAA, podr\u00eda permitir a un atacante causar una interrupci\u00f3n temporal de la GUI de administraci\u00f3n, la API Nitro y la comunicaci\u00f3n RPC"
    }
  ],
  "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:N/A:H",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH",
          "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:M/Au:N/C:N/I:N/A:P",
          "accessVector": "NETWORK",
          "accessComplexity": "MEDIUM",
          "authentication": "NONE",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 4.3
        },
        "baseSeverity": "MEDIUM",
        "exploitabilityScore": 8.6,
        "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-400"
        }
      ]
    },
    {
      "source": "support@hackerone.com",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        }
      ]
    }
  ],
  "configurations": [
    {
      "operator": "AND",
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:*",
              "versionEndIncluding": "11.1-65.23",
              "matchCriteriaId": "609476CC-EB28-4FC2-8035-1C8A0F6F5573"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "12.1",
              "versionEndExcluding": "12.1-63.22",
              "matchCriteriaId": "C076C750-AC7C-48DD-86B2-EB69FA14467F"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "13.0",
              "versionEndExcluding": "13.0-83.27",
              "matchCriteriaId": "C2F3ACE6-B0F6-4E27-9DD8-EFEC98A7ACB4"
            }
          ]
        },
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": false,
              "criteria": "cpe:2.3:h:citrix:application_delivery_controller:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "80E69E10-6F40-4FE4-9D84-F6C25EAB79D8"
            }
          ]
        }
      ]
    },
    {
      "operator": "AND",
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:citrix:gateway:*:*:*:*:*:*:*:*",
              "versionEndExcluding": "11.1-65.23",
              "matchCriteriaId": "7C7C2760-C923-4D70-B9BA-9905CBD7A72C"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:citrix:gateway:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "12.1",
              "versionEndExcluding": "12.1-63.22",
              "matchCriteriaId": "FEC9E148-82D8-4032-9E30-3A40362FEF29"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:citrix:gateway:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "13.0",
              "versionEndExcluding": "13.0-83.27",
              "matchCriteriaId": "0FA42F00-61CF-44DB-9C16-C3EDD3960548"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://support.citrix.com/article/CTX330728",
      "source": "support@hackerone.com",
      "tags": [
        "Vendor Advisory"
      ]
    }
  ]
}