nvd-json-data-feeds/CVE-2021/CVE-2021-233xx/CVE-2021-23351.json

{
  "id": "CVE-2021-23351",
  "sourceIdentifier": "report@snyk.io",
  "published": "2021-03-08T05:15:12.593",
  "lastModified": "2024-11-21T05:51:33.350",
  "vulnStatus": "Modified",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The package github.com/pires/go-proxyproto before 0.5.0 are vulnerable to Denial of Service (DoS) via the parseVersion1() function. The reader in this package is a default bufio.Reader wrapping a net.Conn. It will read from the connection until it finds a newline. Since no limits are implemented in the code, a deliberately malformed V1 header could be used to exhaust memory in a server process using this code - and create a DoS. This can be exploited by sending a stream starting with PROXY and continuing to send data (which does not contain a newline) until the target stops acknowledging. The risk here is small, because only trusted sources should be allowed to send proxy protocol headers."
    },
    {
      "lang": "es",
      "value": "El paquete github.com/pires/go-proxyproto versiones anteriores a 0.5.0, son vulnerables a una Denegaci\u00f3n de Servicio (DoS) por medio de la funci\u00f3n parseVersion1(). El lector de este paquete es un bufio.Reader predeterminado que contiene un net.Conn. Leer\u00e1 desde la conexi\u00f3n hasta que encuentre una nueva l\u00ednea. Dado que no se implementan l\u00edmites en el c\u00f3digo, un encabezado V1 deliberadamente malformado podr\u00eda ser usado para agotar la memoria en un proceso de servidor usando este c\u00f3digo y crear una DoS. Esto puede ser explotado mediante el envi\u00f3 de una secuencia que comience con PROXY y contin\u00fae enviando datos (que no contienen una nueva l\u00ednea) hasta que el objetivo deje de reconocer. El riesgo aqu\u00ed es peque\u00f1o, porque solo las fuentes confiables deben poder enviar encabezados de protocolo proxy"
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "report@snyk.io",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 4.4,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "HIGH",
          "privilegesRequired": "HIGH",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 0.7,
        "impactScore": 3.6
      },
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 4.9,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "HIGH",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.2,
        "impactScore": 3.6
      }
    ],
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:P",
          "baseScore": 4.0,
          "accessVector": "NETWORK",
          "accessComplexity": "LOW",
          "authentication": "SINGLE",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "PARTIAL"
        },
        "baseSeverity": "MEDIUM",
        "exploitabilityScore": 8.0,
        "impactScore": 2.9,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:go-proxyproto_project:go-proxyproto:*:*:*:*:*:*:*:*",
              "versionEndExcluding": "0.5.0",
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  "references": [
    {
      "url": "https://github.com/pires/go-proxyproto/commit/7f48261db810703d173f27f3309a808cc2b49b8b",
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      "source": "report@snyk.io",
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    },
    {
      "url": "https://github.com/pires/go-proxyproto/pull/71",
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    {
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}