{
  "id": "CVE-2021-23937",
  "sourceIdentifier": "security@apache.org",
  "published": "2021-05-25T17:15:08.187",
  "lastModified": "2021-06-02T17:56:24.073",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "A DNS proxy and possible amplification attack vulnerability in WebClientInfo of Apache Wicket allows an attacker to trigger arbitrary DNS lookups from the server when the X-Forwarded-For header is not properly sanitized. This DNS lookup can be engineered to overload an internal DNS server or to slow down request processing of the Apache Wicket application causing a possible denial of service on either the internal infrastructure or the web application itself. This issue affects Apache Wicket Apache Wicket 9.x version 9.2.0 and prior versions; Apache Wicket 8.x version 8.11.0 and prior versions; Apache Wicket 7.x version 7.17.0 and prior versions and Apache Wicket 6.x version 6.2.0 and later versions."
    },
    {
      "lang": "es",
      "value": "Un proxy DNS y una posible vulnerabilidad de ataque de amplificaci\u00f3n en WebClientInfo de Apache Wicket permiten que un atacante active b\u00fasquedas de DNS arbitrarias desde el servidor cuando el encabezado X-Fordered-For no se sanea correctamente. Esta b\u00fasqueda de DNS puede ser dise\u00f1ada para sobrecargar un servidor DNS interno o para ralentizar el procesamiento de peticiones de la aplicaci\u00f3n Apache Wicket, lo que provoca una posible Denegaci\u00f3n de Servicio en la infraestructura interna o en la propia aplicaci\u00f3n web. Este problema afecta a Apache Wicket Apache Wicket 9.x versiones 9.2.0 y anteriores; Apache Wicket 8.x versiones 8.11.0 y anteriores; Apache Wicket 7.x versiones 7.17.0 y anteriores y Apache Wicket 6.x versiones 6.2.0 y posteriores"
    }
  ],
  "metrics": {
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        "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": [
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        "type": "Primary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "accessVector": "NETWORK",
          "accessComplexity": "LOW",
          "authentication": "NONE",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.0
        },
        "baseSeverity": "MEDIUM",
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
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  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
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          "lang": "en",
          "value": "CWE-20"
        }
      ]
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          "negate": false,
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  "references": [
    {
      "url": "https://lists.apache.org/thread.html/r127c0c1f3cb71e5bc619ad1e4b898b97c49758d1f20a54042966473e@%3Cannounce.wicket.apache.org%3E",
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