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CVE-2013-4559

Estado: ModificadaAlta (7.6)—

lighttpd before 1.4.33 does not check the return value of the (1) setuid, (2) setgid, or (3) setgroups functions, which might cause lighttpd to run as root if it is restarted and allows remote attackers to gain privileges, as demonstrated by multiple calls to the clone function that cause setuid to fail when the user process limit is reached.

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 (3)

Debian — Debian LinuxLighttpd — LighttpdOpensuse — Opensuse

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2013-4559",
  "cveTags": [],
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        "source": "nvd@nist.gov",
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          "version": "2.0",
          "baseScore": 7.6,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:H/Au:N/C:C/I:C/A:C",
          "authentication": "NONE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "HIGH",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
        },
        "acInsufInfo": false,
        "impactScore": 10,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 4.9,
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        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
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      "affectedData": [
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          "vendor": "n/a",
          "product": "n/a",
          "versions": [
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              "status": "affected",
              "version": "n/a"
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          ]
        }
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  ],
  "published": "2013-11-20T14:12:30.727",
  "references": [
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      "url": "http://download.lighttpd.net/lighttpd/security/lighttpd_sa_2013_02.txt",
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
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          "lang": "en",
          "value": "CWE-264"
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      ]
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      "value": "lighttpd before 1.4.33 does not check the return value of the (1) setuid, (2) setgid, or (3) setgroups functions, which might cause lighttpd to run as root if it is restarted and allows remote attackers to gain privileges, as demonstrated by multiple calls to the clone function that cause setuid to fail when the user process limit is reached."
    },
    {
      "lang": "es",
      "value": "lighttpd anterior a la versión 1.4.33 no comprueba el valor de vuelta de (1) setuid, (2) setgid, o (3) setgroups, lo que podría causar que lighttpd se ejecute bajo administrador si es reiniciado y permitir a atacantes remotos obtener privilegios, tal y como se demostró con múltiples llamadas a la función de clonado que provocó que setuid fallara cuando el límite de proceso de usuario era alcanzado."
    }
  ],
  "lastModified": "2026-06-16T23:57:27.147",
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