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CVE-2023-37544

Estado: ModificadaAlta (7.5)—

Improper Authentication vulnerability in Apache Pulsar WebSocket Proxy allows an attacker to connect to the /pingpong endpoint without authentication.

This issue affects Apache Pulsar WebSocket Proxy: from 2.8.0 through 2.8.*, from 2.9.0 through 2.9.*, from 2.10.0 through 2.10.4, from 2.11.0 through 2.11.1, 3.0.0.

The known risks include a denial of service due to the WebSocket Proxy accepting any connections, and excessive data transfer due to misuse of the WebSocket ping/pong feature.

2.10 Pulsar WebSocket Proxy users should upgrade to at least 2.10.5. 2.11 Pulsar WebSocket Proxy users should upgrade to at least 2.11.2.

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3.0 Pulsar WebSocket Proxy users should upgrade to at least 3.0.1. 3.1 Pulsar WebSocket Proxy users are unaffected. Any users running the Pulsar WebSocket Proxy for 2.8, 2.9, and earlier should upgrade to one of the above patched versions.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Apache — Pulsar

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2023-37544",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security@apache.org",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "security@apache.org",
      "affectedData": [
        {
          "vendor": "Apache Software Foundation",
          "product": "Apache Pulsar WebSocket Proxy",
          "versions": [
            {
              "status": "affected",
              "version": "2.8.0",
              "versionType": "semver",
              "lessThanOrEqual": "2.8.*"
            },
            {
              "status": "affected",
              "version": "2.9.0",
              "versionType": "semver",
              "lessThanOrEqual": "2.9.*"
            },
            {
              "status": "affected",
              "version": "2.10.0",
              "versionType": "semver",
              "lessThanOrEqual": "2.10.4"
            },
            {
              "status": "affected",
              "version": "2.11.0",
              "versionType": "semver",
              "lessThanOrEqual": "2.11.1"
            },
            {
              "status": "affected",
              "version": "3.0.0"
            }
          ],
          "defaultStatus": "unaffected"
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  ],
  "published": "2023-12-20T09:15:07.007",
  "references": [
    {
      "url": "http://www.openwall.com/lists/oss-security/2023/12/20/2",
      "tags": [
        "Mailing List"
      ],
      "source": "security@apache.org"
    },
    {
      "url": "https://lists.apache.org/thread/od0k9zts1toc9h9snbqq4pjpyx28mv4m",
      "tags": [
        "Mailing List"
      ],
      "source": "security@apache.org"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2023/12/20/2",
      "tags": [
        "Mailing List"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://lists.apache.org/thread/od0k9zts1toc9h9snbqq4pjpyx28mv4m",
      "tags": [
        "Mailing List"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security@apache.org",
      "description": [
        {
          "lang": "en",
          "value": "CWE-287"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Improper Authentication vulnerability in Apache Pulsar WebSocket Proxy allows an attacker to connect to the /pingpong endpoint without authentication.\n\nThis issue affects Apache Pulsar WebSocket Proxy: from 2.8.0 through 2.8.*, from 2.9.0 through 2.9.*, from 2.10.0 through 2.10.4, from 2.11.0 through 2.11.1, 3.0.0.\n\nThe known risks include a denial of service due to the WebSocket Proxy accepting any connections, and excessive data transfer due to misuse of the WebSocket ping/pong feature.\n\n2.10 Pulsar WebSocket Proxy users should upgrade to at least 2.10.5.\n2.11 Pulsar WebSocket Proxy users should upgrade to at least 2.11.2.\n3.0 Pulsar WebSocket Proxy users should upgrade to at least 3.0.1.\n3.1 Pulsar WebSocket Proxy users are unaffected.\nAny users running the Pulsar WebSocket Proxy for 2.8, 2.9, and earlier should upgrade to one of the above patched versions."
    },
    {
      "lang": "es",
      "value": "Vulnerabilidad de autenticación incorrecta en Apache Pulsar WebSocket Proxy permite a un atacante conectarse al endpoint /pingpong sin autenticación. Este problema afecta a Apache Pulsar WebSocket Proxy: desde 2.8.0 hasta 2.8.*, desde 2.9.0 hasta 2.9.*, desde 2.10.0 hasta 2.10.4, desde 2.11.0 hasta 2.11.1, 3.0.0. Los riesgos conocidos incluyen una denegación de servicio debido a que WebSocket Proxy acepta cualquier conexión y una transferencia excesiva de datos debido al mal uso de la función de ping/pong de WebSocket. 2.10 Los usuarios de Pulsar WebSocket Proxy deben actualizar al menos a 2.10.5. 2.11 Los usuarios de Pulsar WebSocket Proxy deben actualizar al menos a 2.11.2. 3.0 Los usuarios de Pulsar WebSocket Proxy deben actualizar al menos a 3.0.1. 3.1 Los usuarios de Pulsar WebSocket Proxy no se ven afectados. Cualquier usuario que ejecute Pulsar WebSocket Proxy para 2.8, 2.9 y versiones anteriores debe actualizar a una de las versiones parcheadas anteriores."
    }
  ],
  "lastModified": "2026-06-17T06:08:25.083",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:apache:pulsar:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "D512CD7B-D493-491E-A6C5-879E81251897",
              "versionEndExcluding": "2.10.5"
            },
            {
              "criteria": "cpe:2.3:a:apache:pulsar:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "0ECAEE42-ADBE-40B3-BD33-3C7D2006C2C5",
              "versionEndExcluding": "2.11.2",
              "versionStartIncluding": "2.11.0"
            },
            {
              "criteria": "cpe:2.3:a:apache:pulsar:3.0.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B50CF4D0-189C-404B-9906-04E7BB94B574"
            }
          ],
          "operator": "OR"
        }
      ]
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  ],
  "sourceIdentifier": "security@apache.org"
}