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CVE-2007-4727

Estado: ModificadaMedia (6.8)—

Buffer overflow in the fcgi_env_add function in mod_proxy_backend_fastcgi.c in the mod_fastcgi extension in lighttpd before 1.4.18 allows remote attackers to overwrite arbitrary CGI variables and execute arbitrary code via an HTTP request with a long content length, as demonstrated by overwriting the SCRIPT_FILENAME variable, aka a "header overflow."

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)

Lighttpd — Lighttpd

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2007-4727",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.8,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": true,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2007-09-12T19:17:00.000",
  "references": [
    {
      "url": "http://fedoranews.org/updates/FEDORA-2007-213.shtml",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/26732",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/26794",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/26824",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/26997",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secunia.com/advisories/27229",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://securityreason.com/securityalert/3127",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://secweb.se/en/advisories/lighttpd-fastcgi-remote-vulnerability/",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://trac.lighttpd.net/trac/changeset/1986",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.gentoo.org/security/en/glsa/glsa-200709-16.xml",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.lighttpd.net/assets/2007/9/9/lighttpd_sa_2007_12.txt",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.novell.com/linux/security/advisories/2007_20_sr.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/archive/1/479763/100/0/threaded",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/25622",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2007/3110",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=284511",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/36526",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://issues.rpath.com/browse/RPL-1715",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://fedoranews.org/updates/FEDORA-2007-213.shtml",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/26732",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/26794",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/26824",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/26997",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secunia.com/advisories/27229",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://securityreason.com/securityalert/3127",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://secweb.se/en/advisories/lighttpd-fastcgi-remote-vulnerability/",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://trac.lighttpd.net/trac/changeset/1986",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.gentoo.org/security/en/glsa/glsa-200709-16.xml",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.lighttpd.net/assets/2007/9/9/lighttpd_sa_2007_12.txt",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.novell.com/linux/security/advisories/2007_20_sr.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/archive/1/479763/100/0/threaded",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.securityfocus.com/bid/25622",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.vupen.com/english/advisories/2007/3110",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=284511",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/36526",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://issues.rpath.com/browse/RPL-1715",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Buffer overflow in the fcgi_env_add function in mod_proxy_backend_fastcgi.c in the mod_fastcgi extension in lighttpd before 1.4.18 allows remote attackers to overwrite arbitrary CGI variables and execute arbitrary code via an HTTP request with a long content length, as demonstrated by overwriting the SCRIPT_FILENAME variable, aka a \"header overflow.\""
    },
    {
      "lang": "es",
      "value": "Desbordamiento de búfer en la función fcgi_env_add de mod_proxy_backend_fastcgi.c en la extensión mod_fastcgi en lighttpd anterior a 1.4.18 permite a atacantes remotos sobrescribir variables CGI de su elección y ejecutar código de su elección mediante una petición HTTP con una longitud de contenido larga, como se ha demostrado sobrescribiendo la variable SCRIPT_FILENAME, también conocido como \"desbordamiento de cabecera\"."
    }
  ],
  "lastModified": "2026-06-16T22:44:39.827",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:lighttpd:lighttpd:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "280F8BA1-34E8-4A93-871C-49E6F6826F2C",
              "versionEndIncluding": "1.4.15"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}