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CVE-2023-4540

Estado: ModificadaAlta (7.5)—

Improper Handling of Exceptional Conditions vulnerability in Daurnimator lua-http library allows Excessive Allocation and a denial of service (DoS) attack to be executed by sending a properly crafted request to the server. Such a request causes the program to enter an infinite loop.

This issue affects lua-http: all versions before commit ddab283.

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)

Daurnimator — Lua-http

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2023-4540",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-4540",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-09-30T15:48:52.303748Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "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
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          "integrityImpact": "NONE",
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          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
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    {
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          "product": "lua-http",
          "versions": [
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  "published": "2023-09-05T08:15:40.017",
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    },
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      "url": "https://github.com/daurnimator/lua-http/commit/ddab2835c583d45dec62680ca8d3cbde55e0bae6",
      "tags": [
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      "source": "cvd@cert.pl"
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      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "cvd@cert.pl",
      "description": [
        {
          "lang": "en",
          "value": "CWE-755"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-755"
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Improper Handling of Exceptional Conditions vulnerability in Daurnimator lua-http library allows Excessive Allocation and a denial of service (DoS) attack to be executed by sending a properly crafted request to the server. \nSuch a request causes the program to enter an infinite loop. \n\nThis issue affects lua-http: all versions before commit ddab283."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de Manejo Inadecuado de Condiciones Excepcionales en la librería lua-http de Daurnimator permite la asignación excesiva y la ejecución de un ataque de Denegación de Servicio (DoS)  mediante el envío de una petición correctamente manipulada al servidor. Este problema afecta a lua-http: todas las versiones anteriores al commit ddab283. "
    }
  ],
  "lastModified": "2026-06-17T06:38:02.853",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:daurnimator:lua-http:0.4:*:*:*:*:lua:*:*",
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            }
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          "operator": "OR"
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  "sourceIdentifier": "cvd@cert.pl"
}